返回

初中三年级英语

首页
  • 改错题
    改错。
    (     ) 1.Whateverfinishesfirstwins.                 
    A           B              C
    (     ) 2. When wearrivedatthe airport, our flighthasalready left.                 
    A     B                                C
    (     ) 3.Excuseme, can you makearoom for me and let mego out ofthe lift ?                 
    A                                B                                         C
    (     ) 4. Thereisn'tany noisecomefrom the room. Maybeno oneis in it.                 
    A                     B                                        C
    (     ) 5. After theyhad finisheddigthe foundations, theyresteda few days.                 
    A         B                                    C
    (     ) 6. If Iwereyou, I would have told himto stopthe carimmediately.                  
    A                                               B                      C
    (     ) 7. The reporterinsistedasking me someprivatequestions and waspushy.                 
    A                                 B                                  C
    (     ) 8. He asked mehow longhad Ibeenatthis school.                  
    A         B           C
    本题信息:2010年专项题英语改错题难度较难 来源:曾庆艳
  • 本题答案
    查看答案
本试题 “改错。( ) 1.Whateverfinishesfirstwins. A B C( ) 2. When wearrivedatthe airport, our flighthasalready left. A B C( ) 3.Excuseme, can you makearoom f...” 主要考查您对

不可数名词

实义动词的过去式

分词

动名词

动词短语

过去完成时

宾语从句

状语从句

虚拟语气句

主语从句

等考点的理解。关于这些考点您可以点击下面的选项卡查看详细档案。
  • 不可数名词
  • 实义动词的过去式
  • 分词
  • 动名词
  • 动词短语
  • 过去完成时
  • 宾语从句
  • 状语从句
  • 虚拟语气句
  • 主语从句
不可数名词:
是指不能以数目来计算,不可以分成个体的概念、状态、品质、感情或表示物质材料的东西;
它一般没有复数形式,只有单数形式,它的前面不能用不定冠词a / an ,若要表示它的个体意义时,一般要与一个名词短语连用,相当于中文里的【一 +(量词)+ 名词】,其中的量词意义依与具体的名词搭配而定。
 例如:
a cup of tea 一杯茶
a piece of news 一则新闻 
two pieces of paper 两张纸  
three glasses of water 三杯水 
 five bags of rice 五袋大米
不可数名词量的表示:
1、不可数名词的数量一般用some , much , a lot of , lots of , a bit of , a little , little等数量形容词表示。
eg: some meat 一些肉    
a lot of money很多钱     
a little water 一点水

2、不可数名词的数量还可以用适当的量词(由普通名词充当)作单位来表示,
结构为“数词+量词(普通名词)+ of + 不可数名词”。
其单复数变化就体现在普通名词上。
eg: a piece of paper 一张纸    
three pieces of paper 三张纸

3、一些常见的用来表示不可数名词数量的词
①piece(条、块、片、张、份、则)
eg: a piece of meat 一块肉   
a piece of bread 一片面包    
two pieces of advice 两条意见
a piece of news 一条消息/一则新闻
②glass(玻璃杯) , cup(茶杯) , bottle(瓶)
eg: a glass of milk 一杯牛奶    
a cup of tea 一杯茶    
six bottles of beer 六瓶啤酒
③loaf(条)、bar(块)、tin(听,罐)
eg: a loaf of bread 一条面包    
a bar of soap 一块肥皂    
a tin of tobacco 一听/罐烟丝
④basket(篮)、bag(袋)、box(箱,盒)
eg: a basket of food 一篮食物   
five bags of rice 五袋大米    
a box of wine 一箱白酒
⑤kilo(公斤)、pound(磅)
eg: a pound of sugar 一磅糖    
two kilos of meat 二公斤肉    
half a pound of coffee 半磅咖啡
a quarter of a pound of cheese 四分之一磅奶酪
a quarter of a kilo of rice 半斤大米
不可数名词记忆歌诀:
不可数名词很特殊,
六点用法应记清楚:
一是没有复数形式,
二作主语谓须单数①,
三是其前不用a(an),
四是修饰不用基数②,
五可much, some和any来修饰,
六表数量用“计量+of”短语③。
[说明]:
①不可数名词作主语时,谓语用单数,如:There is some milk in the bottle.
②不可数名词不可直接用不定冠词和基数词直接修饰,但可用some、any和much等词修饰;
③当表示不可数名词的数量时,其前应用“计量名词+of”短语,注意计量名词有复数形式。如:I’d like two cups of tea.

不可数名词复数形式的特殊含义:
英语中的专有名词、物质名词和抽象名词一般为不可数名词,但有时它们却可用作复数形式。
此时它们往往又有了新的含义。
一、专有名词的复数形式的含义
1.表示一家人或夫妻。例如:
Are the Smiths coming to our party tomorrow night?史密斯一家明晚会来参加我们的聚会吗?
2.表示同名或同姓的若干人。例如:
There are two Marys and three Roberts in his class.他班上有两个玛丽和三个罗伯特。
 Did the Mr. Blakes come this morning?那几位布莱克先生今天上午来了吗?

二、物质名词的复数形式的含义
1.表示不同的种类,如food,wine,metal, wheat,rice等。例如:
The wines of France are among the best in the world.法国的葡萄酒是世界上最好的,
First of all,he wrote out a long list of all the foods which were forbidden。
首先他列出了一长串禁用的食品。
2.表示量很大,远远超过该词原来表示的程度或次数。这一类词常见的有:
sands(沙滩,沙漠),waters(水域),rains(大阵雨、雨季),winds(大风),times(时代), woods(森林),ruins(废墟),rags(碎片、破衣服),ashes(灰烬、骨灰)。例如:
The rising waters did a lot of harm to the crops.上涨的河水给庄稼造成了很大的损害。
These caves collapse easily in heavy rains.下大雨时这些洞穴容易倒塌。
The children are playing on the sands.孩子们在沙滩上玩。
3.某些表示饮料名称的物质名词往往以复数形式代替单位词。这类词有:coffees,teas等。例如:
The waitress has served twenty teas since four o’clock.从四点起,这位女服务员已上了二十份午茶。
Send two coffees and three lemonades to the room.请将两杯咖啡和三杯柠檬汁送到这个房间。
4.某些物质名词又是个体名词,它们的复数形式表示与原来个体完全不同的东西。这类词有:
glasses(眼镜、玻璃杯), irons(熨斗),coppers(铜币),papers(文章,
证件)等。例如:
She is always wearing glasses.她总是戴着眼镜。
He wrote many papers for the newspaper.他为这份报纸写过许多文章。

三、抽象名词的复效形式的含义
1.congratulations, regards, respects,thanks,wishes,apologies等复数形式用来
表示祝愿、礼貌和客气。例如:
It’s your birthday today.Congratulations!今天是你的生日,恭喜你!
You’ve given me so much help.Thanks a lot.你给了我很多帮助,非常感谢。
2.smiles, pities, fears, hopes, kindnesses复数形式表示强调。例如:
He was all smiles.他满脸笑容。
It is a thousand pities.非常遗憾。
I have received many kindnesses from him.他对我非常好。
Great fears are felt for the safety of the missing climbers.人们对失踪的登山者的安全权为担忧。
3.抽象名词具体化。有些抽象名词的复数形式表示具体的事物,如:
cares(烦人的事),anxieties(令人着急的事),worries(使人发愁的事),difficulties(难题),joys(使人高兴的事),failures(失败的事,失败的人),friendships(表示友谊的事例)等。例如:
After listening to his advice,she had no more anxieties.听了他的建议,她不再有发愁的事了。
His friendships never last very long.他与别人的交情从来都不长久。
After many failures,they finally succeeded.经过多次失败之后,他们最后成功了。
4.某些抽象名词在某种场合是个体名词,它们的复数形式表示与该个体名词不同的意义,如:
youths(男青年、小伙子), relations(亲属), beauties(美人),necessities(必需品)等。例如:
Twenty youths attended the meeting yesterday.二十个男青年出席了昨天的会议。
All his poor relations came to spend their holidays at his home.他所有的穷亲戚都在他家过节。


表示一般过去式的动词通常用动词的过去式形式来表示,而动词的过去式是在动词原形的基础上变化的。
动词的过去式可分为规则动词和不规则动词。

实意动词过去式变化规则:

分类 构成 例句
一般情况下 在词尾直接加ed ask—asked
work—worked
以不发音的e结尾 只加d

love—loved

dance—danced

以辅音字母加y结尾 变y为i,再加-ed try—tried
study—studied
以一个元音字母和一个辅音结尾的
重读音节结尾的动词
先双写末尾一个字母,再加ed stop—stopped
permit—permitted
“-ed”的读音规则 1.在清辅音后面读[t],如:help—helped[helpt]
2.在浊辅音或元音后读[d],如:learn—learned
3.在[t]和[d]后读[id],如:want—wantedneed—needed
注:以l结尾的动词,尾音节重读时,双写l,如control—controlled;
尾音节不重读时,双不双写都可以,如travel—traveled/traveled。
特例:picnic—picnicked,另外还有很多动词的过去式是不合乎上述规则的,常见的有:
常用的有:
begin—began,         bring—brought,        come—came,        draw—drew,
drink—drank,          drive—drove,          eat—ate,                feel—felt,
get—got,                  give—gave,              go—went,             grow—grew,
have (has)—had,      keep—kept,            know—knew,       leave—left,  
make—made,           read—read,            run—ran,               say—said,
see—saw,                sit—sat


几个特殊实意动词过去式用法:
a.beat的过去式与原形同形:   
beat(打击) 
beat(过去式) 
beaten(过去分词)   
b.lie有规则变化和不规则变化两种,含义不同   
lie,lied, lied(说谎)   
lay, lain(躺,位于)   

c.hang有规则变化和不规则变化两种,含义不同   
hang,hanged, hanged(处绞刑)   
hung, hung(挂,吊)   

d. welcome(欢迎)一词是规则动词,不可误用为不规则动词   
welcome welcomed, welcomed(正)   
welcome, welcome(误)   

e.不要将不规则动词误用为规则动词   
hit(打) 
hit, hit(正)   
hitted, hitted(误) 


实意动词过去式用法基本句式:
1.主+V-ed+宾+其它。。。(肯定句)
2.主+didn't+V原+宾+其它。。。
3.Did+主+V原+宾+其它。。。+?
4.回答:Yes,主语代词+didNo,主语代词+didin't.
5.特殊疑问句:特殊疑问词+一般疑问句。
实义动词的一般过去时态:
肯定句要使用动词的过去式,否定句和疑问句要使用助动词do和 does 的过去式 did.

肯定句为:
主语+动词过去式+宾语    如:
I went home at nine o'clock yesterday.

否定句:
主语+didn't +动词原形+宾语  如:
I didn't go home yesterday.  He didn't tell me about you.

疑问句:
一般疑问句:
Did +主语+动词原形+宾语
如:Did you go home yesterday?  
Did you study in the school?
肯定回答: Yes, I did.    
否定回答:No, I didn't.

特殊疑问句:特殊疑问词+did +主语+动词原型+宾语
When did you finish your homework last night?      
What did you do the day before yesterday?
分词:
就是具有动词及形容词二者特征的词;尤指以-ing或-ed,-d,-t,-en或-n结尾的英语动词性形容词,具有形容词功能,同时又表现各种动词性特点,
如时态,语态、带状语性修饰语的性能及带宾语的性能。
分词分为现在分词和过去分词两种,是一种非谓语动词形式。
现在分词和过去分词主要差别在于:
现在分词表示"主动和进行",过去分词表示"被动和完成"(不及物动词的过去分词不表示被动,只表示完成)。
分词可以有自己的状语、宾语或逻辑主语等。

现在分词构成形式:
①一般在动词原形末尾加ing,如do→doing、sing→singing、comfort→comforting
②以不发音的e、ue结尾的动词,先去e,再加ing,如dance→dancing、hike→hiking、write→writing、make→ making,take→taking
③以ee、oe、ye结尾的动词加ing,如see→seeing、toe→toeing、dye→dyeing
④以重读闭音节结尾的动词,并且末尾只有一个辅音字母,应双写这一字母,再加ing,如cut→cutting、swim→swimming
注:结尾是x则不必双写,如relax→relaxing
⑤以ie结尾的动词,要把ie变成y再加ing,如die→dying,lie→lying.
⑥以ic结尾的动词,要把ic变成ick再加ing,如picnic→picnicking,traffic→trafficking

过去分词构成形式:
1.规则动词:规则动词的过去分词的构成规则与规则动词的过去式的构成规则相同。四点变化规则:
(1)、一般动词,在词尾直接加“ ed ”。(然而要注意的是,过去分词并不是过去式)
work---worked---worked ,  visit---visited---visited
(2)、以不发音的“ e ” 结尾的动词,只在词尾加“ d ”。
live---lived---lived
(3)、以“辅音字母 + y ”结尾的动词,将 "y" 变为 "i" ,再加“ ed ”。
study---studied---studied,cry---cried---cried,try---tried---tried,fry---fried---fried.[1]
(4)、重读闭音节结尾,末尾只有一个辅音字母,先双写该辅音字母,再加“ ed ”。
stop---stopped---stopped  ,  drop---dropped--dropped
(5)、以ic结尾的动词,要把ic变成ick再加ed,
picnic→picnicked  ,traffic→trafficked
2 、不规则动词:见不规则动词表


分词用法:
1、分词作状语   
分词在句子中作状语,可以表示时间、条件、原因、结果、让步、伴随等。   
分词(短语)作状语时,其逻辑主语应与句中主语相一致。
当现在分词表示的动作发 生在谓语动词之前时, 则用现在分词的完成式,且所表示动作与谓语动作同时发生, 则用现在分词的一般式。
完成或被动关系用过去分词。   
①现在分词:
The students went out of the classroom, laughing and talking.   
②过去分词:
Accompanied by his friend, he went to the railway station. 
Given   better attention, the plants could grow better.   

2、“while ( when, once, until, if , though等连词)+分词”结构   
现在分词或过去分词作状语时,有时可以在分词前加while,when, once, although, until, if等连词。   
①现在分词:
When leaving the airport, she waved again and again to us.
While waiting for  the train, I had a long talk with my sister about her work……   
②过去分词:
Once recovered, he threw himself into his work and made every effort to do it  well.   
Although working very hard, he failed to pass the final exam. If translated word by word, the passage will be difficult to understand.   

3、分词作定语   
分词作定语时,单个的分词通常放在被修饰的名词之前,分词短语一般置于所修饰的中心词后面。
现在分词修饰的是发出该动作的名词(即与名词有主谓关系),过去分词修饰承受该动作的名词(即与名词是动宾关系)。    
We will go on with our experiment as soon as we get the added fund.    
This is really an exhausting day to all of us!   
We can see the part of the moon lighted by sunlight.   
After a night spent in excitement and sleeplessness, I forced myself to take a long walk along the beach the next day.   
More and more developing countries established strategic partnership with  developed countries   

4、分词作宾语补足语   
现在分词在see, watch, hear, observe, notice, feel, find, glimpse, glance等感官动词和look at, listen to等短语动词以及
have, keep, get, catch, leave, set, start, send等使役动词后面与名词或代词构成复合宾语,作宾语补语的成分。
例:I see him passing my house every day.
I caught him stealing things in that shop.
I smelt something burning.

5、分词作表语
分词作表语通常看作形容词来用。
过去分词表示主语的感受或状态,主语多为人。现在分词表示主语的性质,而且主语多为物;
①过去分词:
We were so bored that we couldn’t help yawning.
She felt confused, and even frightened.
②现在分词:
He was very amusing.
That book was rather boring.
很多动词的现在分词都可以作表语:
exciting, interesting, encouraging, disappointing, confusing, touching, puzzling.


动名词:
如果一个动词加上了ing变成了名词,那么这个词称动名词。 动名词是一种兼有动词和名词特征的非限定动词。
它可以支配宾语,也能被副词修饰。
由于动名词是由动词变化而来,它仍保留着动词的某些特征,具有动词的某些变化形式,用以表达名词所不能表达的较为复杂的意念。
动名词的名词特征表现在它可在句子中当名词来用,作主语、宾语、表语、定语。

动名词的结构和形式:
动名词的否定结构:
动名词的否定结构由not 动名词组成。如:
Trying without success is better than not trying at all. 实验没有成功也比不实验好。
He hated himself for not having work hard. 他悔恨自己没有用功。
I’m sorry for not having telephoned you before. 很抱歉,没有早给你打电话。
He felt sorry for not having done the work well. 他为没有把工作做好感到难过。
I fancy it has done you a lot of good not going. 我看不去对你倒好了。
(not going 是动名词一般式的否定形式)
There is no denying the fact that he si diligent.
(no denying 也是动名词一般式的否定)

动名词复合结构:
通常情况下,动名词的逻辑主语为谓语动词的主语。如果动名词动作的发出者不失谓语动的主语时,则需要有自己的逻辑主语物主代词或名词所有格加动名词就构成了动名词的复合结构,这种结构在句中可以作主语,宾语等。
(1)逻辑主语是有生命的名词作主语时,必须用名词或代词所有格,作宾语时(尤其在口语中),也可用名词普通个或人称代词宾格。如:
Do you think my going there will be of any help?
你看我去会有什么帮助吗?(宾语)
The student’s knowing English well helps him in learning French.
这位学生通晓英语对他学法语很有帮助。(主语)
Do you mind my(me) smoking ? 你介意我抽烟吗?(宾语)
They insist on Mary’s (Mary) going with them there.
他们坚持要玛丽跟他们一起去那儿。(介词宾语)
(2)逻辑主语是无生命名词是,通常只用名词普通格。如:
Do you hear the rain pattering on the roof?
你听见雨点打在屋顶上了吗?
Is there any hope of our team winning the match ?
我们对赢得比赛有希望吗?
(3) 逻辑主语是指示代词或不定代词this that , somebody , someone , nobody, none, anybody, anyone 时,只用普通格。如:
She was woken up by somebody shouting outside.
她被外面喊叫的人吵醒了。

动名词的形式(一般式,完成式和被动式):
(1) 动名词的一般式所表示的动作与谓语动词所表示的动作同时发生,或在谓语动词表示的动作之后。如:
We are very interested in collecting stamps. 我们对集邮很感兴趣。
His coming will be of great help to us . 他来对我们大有帮助。
但是有些明确表示时间的动词和介词 after, on,upon, 或for之后,常用一般式代替完成式,表示动作发生在谓语动作之前。如:
I shall never forget seeing the Great Wall for the first time.我永远不会忘记第一次看到长城的情景。
On hearing that bad news , the mother couldn’t help crying. 一听到这个糟糕的消息,母亲就禁不住哭了起来。
Excuse me for coming late. 我来晚了,请原谅。
Thank you for giving us so much help. 谢谢你给了我们这么多帮助。
(2) 动名词的完成式所表示的动作或状态在谓语动词之前完成或结束。
He regrets not having taken part in the work. 他后悔没有参加这项工作。
We were praised for having finished the work ahead of time. 我们因提前完成了这项工作而受到了表扬。
(3)动名词的被动式:当动名词的逻辑主语是行为承受者时,用被动语态。如:
I like being given harder work. 我喜欢接受难点的工作。
She is proud of being admitted into the university. 她为被大学录取而感到自豪。
The meeting was put off without his having been consulted. 会议延期并未和他商量。
He doesn’t mind having been criticized. 他不介意过去受到的批评。


动名词与现在分词的关系:
动名词它在形式上与现在分词相同,都是在动词原形的词末加-ing。在现代语法中,这两种形式同视为"-ing形式"。
这两种形式的另一个相同之处是:
它们都是由动词变化而成的,它们都保留了动词的某些特征,它们都能带自己的宾语、状语,而构成动名词短语或是现在分词短语去担当句子成分。
例如:
Speaking in the public,he will surely be very cheerful .
(现在分词短语,作状语)他在公众场所讲话时总是兴高采烈的。
She hates speaking in the public.
(动名词短语,作宾语)她不喜欢在公众场所讲话。

动名词和现在分词都可以用于系动词之后作表语,区别方法是:
①作表语的动名词与主语指的是同一件事,此时系动词相当于“是”,通常把主语和表语的位置互换,语法和意思不变,例如:
My hobby is swimming.可改为Swimming is my hobby.(可将原句中的主语与表语位置互换)
②现在分词作表语主要用以说明主语的性质,不能与主语互换位置,例如:
The story is interesting .不可改为:Interesting is the story.
2.动名词和现在分词都可以用作定语来修饰名词,两者的区别在于:
动名词修饰名词时主要表示该名词的用途,而现在分词修饰名词时性质、状态或动作等。试比较:
①a swimming boy和a swimming suit
前者的意思是“一个正在游泳的男孩”,即a boy who is swimming,现在分词swimming 表示被修饰名词boy的动作;
而后者的意思是“游泳衣”,即a suit for swimming,动名词swimming表示suit 的用途。
②a sleeping child 和 a sleeping car
前者的意思是“一个正在睡觉的孩子”,即a child who is sleeping,现在分词sleeping 表示被修饰名词 child 正处于的状态;
而后者的意思是“卧车(被用来睡觉的车厢)”,即 a car which is used for sleeping,动名词 sleeping 表示car 的用途。


动名词用法口诀:
动名词常泛指,句法作用宾/表/定与主,时态/语态之形式,一般/完成/被动式。
Being done 系被动,不含任何进行意。用作主语请留意,常用it作形式主语,不指未来发生事,表达的信息系已知。
用作表语请记清,作用相当一名词,检验方法很简单,主与表换位能成立。
用作定语也易辩,表示名词之用途。
用作宾语稍复杂,关键留意谓语动词(跟动名词作宾语的常用动词附后),时态同谓动作比较,先于谓动用完成式,其逻辑主语不固定,在句中/句外均有之。
否定式其前加not,复合式其前加物主词,非句首宾格词也可用,尤其口语中更如此。
说明:1、主-----主语 2、宾-----宾语 3、表------表语 4、定------定语 5、谓动---谓语动词

动名词的用法:
一、动名词作主语 
1. 直接位于句首做主语。例如:   
     Swimming is a good sport in summer.   
2. 用 it 作形式主语,把动名词(真实主语)置于句尾作后置主语。   
动名词做主语时,不太常用 it 作先行主语,多见于某些形容词及名词之后。例如:
It is no use telling him not to worry.   
常见的能用于这种结构的形容词还有:better,wonderful,enjoyable,interesting,foolish,difficult,useless,senseless,worthwhile,等。   
注意:important,essential,necessary 等形容词不能用于上述结构。   
3. 用于“There be”结构中。例如:   
There is no saying when he'll come.很难说他何时回来。    
4. 用于布告形式的省略结构中。例如:   
No smoking ( =No smoking is allowed (here) ). (禁止吸烟)   
No parking. (禁止停车)   
5. 动名词的复合结构作主语   
当动名词有自己的逻辑主语时,常可以在前面加上一个名词或代词的所有格,构成动名词的复合结构
(这时,名词或代词的所有格做动名词的逻辑主语)。
动名词的复合结构也可以在句中作主语。例如:    
Their coming to help was a great encouragement to us.   

二、动名词作宾语
1.作动词的宾语   
某些动词后出现非限定性动词时只能用动名词作宾语,不能用不定式。常见的此类动词有:
admit, appreciate, excuse, stand, advise, allow, permit, avoid,  consider, enjoy, finish     
They went on walking and never stopped talking.他们继续走,说个不停。 
I found it pleasant walking along the seashore.在海滩上走真是乐事。   
Mark often attempts to escape being fined whenever he breaks traffic  regulations.   
每当马克违反交通规则时,他常常企图逃避罚款的处分。    
2.作介词的宾语   
We are thinking of making a new plan for the next term. 我们正考虑为下学期制定新的计划。   
Shall we have a rest or get down to doing our work? 我们休息呢还是开始干活?   
3.作形容词的宾语   
The music is well worth listening to more than once.  这种曲子很值得多听几遍。   
We are busy preparing for the coming sports meet. 我们正为马上到来的运动会忙着做准备。

三、动名词作表语
动名词作表语时句子主语常是表示无生命的事物的名词或what引导的名词性从句。
表语、动名词与主语通常是对等的关系,表示主语的内容,主语、表语可互换位置。   
Your task is cleaning the windows.   你的任务就是擦窗户。
(Cleaning the windows is your task.)   
What I hate most is being laughed at.  我最痛恨的就是被别人嘲笑。
(Being laughed at is what I hate most.)

四、动名词作定语
动名词作定语往往表示被修饰词的某种用途。如:   
a walking stick =a stick for walking=a stick which is used for walking   
a washing machine=a machine for washing=a machine which is used for washing    
a reading room=a room for reading=a room which is used for reading   
a measuring tape=a tape for measuring=a tape which is used for measuring   
sleeping pills=pills for sleeping=pills which is used for sleeping


动名词是非限定动词的一种形式,由动词原形+ing构成。它既有动词的特征,又有名词的特征,故称。
动名词也有时态和语态的变化,如表所示(以及物动词write为例),不及物动词没有语态的变化。
时态、语态 主动 被动
一般式 writing being  written
完成式
having written
having been written

动名词使用注意事项:
1) 动名词做主语时,谓语动词为单数
2) 在动名词和不定式中,作为介词的宾语是动名词
3) 动名词的否定直接在其前加否定词,通过代词的宾格或所有格形式给出逻辑主语
例:I would appreciate you calling back this afternoon.
4) 有些词后只能接动名词
acknowledge;admit; advise;advocate;allow;appreciate; avoid; celebrate; consider; contemplate; defer; delay; deny;
detest; discontinue; dislike; dispute; enjoy; it entails; escape; excuse; explain; fancy; feel like; finish; forgive; can’t help;
hinder; imagine; it involves; keep; it means; mention; mind; miss; it necessitates; pardon; postpone; practice; prevent;
recall; report; resent; resist; risk; suggest; understand...
5) 另外还有一些接-ing形式的常用说法
it’s no good; it’s no/little/hardly any/ use; it’s not/hardly/scarcely use; it’s worthwhile; spend money/time; there’s no;
there’s no point in; there’s nothing worse than; what’s the use/point
6) 有些词后面加不定式和动名词均可
remember,forget,try,stop,go on,continue,stop,regret,cease,mean后面均可用不定式和-ing形式,但意义截然不容。
例:remember to do/doing:
①I remembered to post the letters.(指未来/过去未来将要做的动作)
②I remembered posting/having posted the letters.(我记得做过这个动作)
 forget与remember的用法类似。
 regret的用法:
①I regret to inform you that…(我很遗憾地通知你……)
②I regretted having left the firm after twenty years.(为了“二十年前的离开”而遗憾。)
 try to(努力)与try +–ing(试验):
①You really must try to overcome your shyness.
②Try practicing five hours a day.
动词短语:
由动词和动短语成,或以动词为中心,功能同动词的短语叫动词短语,动词短语是动词的一种固定搭配形式,动词短语的搭配可分为下列四种基本类型。
动词短语搭配形式:
1.动词+副词
①作及物动词,例: 
He brought up his children strictly.   
从以上的例句中可以看出,在“动词+副词”的词组中宾语位置有两种情况:
宾语如是名词,则可置于副词后面,亦可置于动词和副词之间。
而如果宾语是代词,只能置于动词后面,即动词和副词之间。   
②作不及物动词,例:    
Something unexpected has turned up. 出现了令人意外的情况。(turn up=appear)   
③既可作及物动词又可作不及物动词,例:   
The barrel of gunpowder blew up.(不及物)火药桶爆炸了。   
The soldiers blew up the bridge.(及物)士兵们把桥炸毁了。

2.动词+介词 
动词与介词构成的词组在词义上相当于一个及物动词,宾语总是在介词后面,例:
I don’t much care for television.我不很喜欢电视。(care for=like)

3.动词+副词+介词
在这类动词短语中,动词、副词、介词紧密结合,是动副词组和动介词组的合成体,词义上相当于一个及物动词。
它兼有以上两类短语动词的特点,但宾语总是位于介词之后,例: 
We must work hard to make up for lost time.我们必须努力工作来弥补失去的时间。(make up for=compensate)

4.动词+名词
这类动词短语中的常见动词是have,take,give,make等,
后面的名词通常是从动词转化而来的动作名词,并表达了短语动词的真正意义,例:    
Let’s have another try.让我们再试一下。(have a try=v.try)  

5.动词+名词+介词    
这类动词短语只用作及物动词。名词前可加形容词说明程度,宾语总是位于介词之后,
 例:Keep an eye on the baby while I am out.我不在家时请照看一下小孩子。   

6.be+形容词(包括过去分词作形容词)+介词    
这类动词短语也相当于及物动词,宾语位于介词后面,形容词是短语动词的真正词义,
例:I know he is slow at understanding,but you have to be patient with him. 我知道他理解力差,但你得对他耐心些。

动词短语与短语动词:
一、短语动词
(1)短语动词常常是两个词(一个动词+一个副词性小品)构成,如:wake up , get up ,turn out 等。

(2)同一个动词后面可以有不同的副词性小品词,构成不同意义的短语动词。如:He turn on the radio .Bob turned out smiling.

(3)短语动词用法普遍,尤其在非正式语言中:

我们可以说 He awoke late the following morning .但这太正式了。

我们通常说 He woke up late the following morning .


短语动词的类型

Here is a page from Mr Jones` diary :

Monday ,February 5th.

*有些短语动词不带宾语:

The car broke down .Cigarette prices are going up.

*多数主短语动词可以带宾语,宾语通常在副词性小品词的前或后:

动词+副词性小品词+宾语 动词+宾语+副词性小品词

I rang up a garage. I rang a garage up.

如果宾语较长,则通常放在副词之后:

I filled in an application form.(不说 I filled an application form in .)

如果宾语是代词,其结构通常如下:

动词+代词+副词性小品词

I put it down.(不说 I put down it .)

*有些短语动词是由三个词构成的(动词+副词性小品词+介词),这样,宾语就只能放在介词后面:

I don`t get on with the people at work.

短语动词由动词加上介词或副词小品词构成。比如:
1. 由动词break构成的常见短语动词有:
break away (from) 突然逃离;断绝往来,脱离;改掉,破除
break down (机器等)坏了;(计划等)失败;(谈话等)中断;(健康等)变坏;感情失去控制
break in 突然进来,强行进入;插嘴,打岔;训练,使适应
break into 强行进入;突然…起来;打断,插嘴;占用时间
break off 停止讲话;暂停,休息;(使)折断
break out (火灾、战争等)突然发生,爆发
break through 突破;克服,征服;强行穿过;(太阳等)从云层里出来
break up 解散,驱散;(学校等)放假;结束,破裂;击碎;绝交
break with 与…绝交,与…决裂
2. 又如由bring构成的常用短语动词有:
bring about 引起,实现,导致
bring (a)round 使改变观点或看法;使苏醒;顺便把某人带来串门
bring back 送还;使想起,使恢复
bring down 击落;打死,打伤;使倒下;降低
bring forth 产生,引起,结果
bring in 收获;获利;介绍,引进;聘请;逮捕
bring off 从船上救出;设法做成
bring on 带来,引起;促使生长;帮助提高
bring out 取出,拿出;显示出,使出来;出版
bring over 说服,使改变(思想等)
bring through 使度过(困难,危机等)
bring together 使和解
bring up 提出,提起;抚养,培养;呕吐

二、动词短语
动词短语由动词加上宾语或状语构成。如:
break a glass 打破一个玻璃杯
break one’s leg 摔断腿
break a window 打破窗户
break the rules 违反规定
break a bad habit 改掉坏习惯
break the world record 打破世界记录
bread easily 容易断
break to pieces 破成碎片
bring a book 带来一本书
bring sb sth 给某人带来某物
bring sb great satisfaction 给某人带来极大的快慰
bring death and famine 导致死亡和饥荒


初中英语动词短语整理:
1. break
break down破坏,出毛病,拆开
break off暂停,中断
break in破门而入, 打断
break into破门而入,突然…起来
break out爆发
break away from打破陈规;奋力挣脱;放弃习惯
break through 出现,突破
break up打碎,拆散, 分裂、分解

2. call
call at a place (车船等)停靠;到某地拜访。
call away 叫走,叫开…;转移(注意力等)。
call back唤回; 回电话;
call for需要,要求
call for sth (sb) 喊着叫某人来,喊着叫人取来某物
call in 叫进,请进; 找来,请来;来访;收回
call off取消; 叫走,转移开
call (up)on sb 拜访或看望某人
call sb sth 为某人叫某物
call (up)on sb to do sth
叫(请)某人做某事
call up给…打电话;  想起,回忆起; 召集,应召入伍   
call out大喊,高叫; 叫出去

3. come
come down下跌,落,降,传下来   
come in进来  
come out出版,结果是
come on来临/ 快点   
come along一道来,赶快
come over走过来   
come up发芽,走近     
come back回来   
come from来自,源自

4. cut
cut down砍倒,削减  
cut up连根拔除,切碎

5. die
die of死于(疾病,饥饿,寒冷,情感原因)
die from死于(外界原因)    
die out绝种

6. fall
fall behind落后 
fall down掉下,跌倒
fall into 落入;陷入
fall off 从。。。掉下
fall out与。。。争吵

7. go
go along沿着。。。。走
go through通过,经受
go over复习,检查                  
go up(价格)上涨,建造起来               
go against违反  
go away离开
go by时间过去                      
go down降低,(日、月)西沉
go on(with)继续进行                  
go out外出,熄灭                  
go off发出响声

8. get
get down下来,记下,使沮丧         
get on进展,进步,穿上,上车           
get off脱下,下车
get away逃跑,逃脱,去休假
get over克服,从疾病中恢复  
get along with进展,相处
get up起床                              
get into (trouble) 陷入困境中              
get back取回,收回                      
get out 出去
get to 到达。。。

9. give
give away赠送,泄露,出卖        
give out发出,疲劳,分发,      
give in (to sb.) 屈服
give up放弃,让(座位)

10. hand
hand in交上,提交
hand out分发    

11.hold
hold on to…继续,坚持
hold up举起,使停顿
hold on别挂电话,等,坚持     

12. keep       
keep up with跟上
keep out 不使。。。进入              
keep from克制,阻止
keep away from避开,不接近,
keep on继续,坚持下来
keep down 使。。。处于低水平                 

13.knock
knock at/on敲
knock into撞到某人身上                   

14. look
look up查找,向上看 
look through翻阅,浏览     
look after/ at / for 照顾/看/寻找
look out(for)当心                                  
look about / around/round四下查看
look forward to盼望                           

15. make
make up编造,打扮,组成           
make into / of / from 制成           

16.pass     
pass by经过              
pass down(on)…to传给

17. pay
pay back还钱,报复 
pay for付钱,因…得到报应  

18. pick
pick up拾起,接人,站起,收听,
pick out挑选,辨认,看出  

19. put
put up张贴,举起,   
put out伸出,扑灭            
put off推迟               
put into放进,翻译
put away放好,存钱           
put down记下,平息
put on穿戴,上映,              
put aside放到一边         
put back放回

20. stand
stand out 突显,引人注目
stand up 起立,站起来
38.其它常用词组
wake up 醒,唤醒,弄醒
stay up 不睡觉;熬夜
depend on依靠;取决于
worry about为。。。担忧
laugh at嘲笑。。。
begin with以。。。开始
mix up混合、搀和
major in 主修
grow up成长
open up 打开,张开;开发
end up到达或来到某处; 达到某状态
throw away 丢弃。。。
ask for要求。。。
wait for等待。。。
agree with同意。。。
find out(经研究或询问)获知某事
send out 发出,放出,射出
search for 搜索,搜查
chop down 砍到
have.. on 穿着。。。
step out of 跨步走出
drop out of 从。。。掉出
happen to 发生在。。。
belong to属于
arrive in /at到达。。。
try on试穿。。。
vote on对。。。进行投票
strech out伸展。。。
hang out闲逛
leave for离开前往
sell out 卖完、售完
show up 出席;露面

21. run
run after追逐,追捕   
run away逃跑  
run off跑掉,迅速离开       
run out of用完

22. set
set up建立       
set off 激起,引起      

23. take
take after 与…相像
take off脱掉,起飞  
take away拿走  
take up从事,占用(时间空间)   
take down记录,取下       
take back收回
take pride in以… ……为自豪,
take the place of 代替

24. think
think of想起,考虑,对…看法   
think out(自然)想出办法  
think up想出(设计出、发明、编造)
think about考虑      
think over仔细考虑      

25. turn
turn off / on打开                  
turn to翻到,转向,求助
turn down调低,拒绝               
turn back返回,转回去
turn round转过身来                 
turn up向上翻,出现,音量调大                     

26. care
care about 担心,关心;在乎,介意
care for 关心,关怀,照顾

27. clean
clean up 把…打扫干净,把…收拾整齐
clean out 清除;把…打扫干净

28.learn
learn about 获悉,得知,认识到
learn from  从/向。。。学习

29. fight
fight for..争取获得…
fight against 争取克服、战胜…
fight with…与。。。搏斗/战斗

30. dream
dream of梦想,想橡
dream about 梦到。。。

31. work
work for 为。。工作
work out 产生结果;发展;成功

32. argue
argue with …与。。。争论
argue about..争论。。。

33. complain
complain to 向。。抱怨
complain about抱怨。。。

34. hear
hear of 听说,得知
hear about听到。。。的事,听到。。的话
hear from接到。。。的信

35. talk
talk about 讨论。。。
talk with/to..和。。。讨论

36. live
live in 住在。。。
live on 以。。。为主食



过去完成时:
是把时间推移到过去某一时间之前,与现在不发生联系,由"had+-ed分词"构成。

基本结构:
主语+had+过去分词vpp.(done)
①肯定句:主语+had+过去分词+其他.
②否定句:主语+had+not+过去分词+其他.
③一般疑问句:Had+主语+过去分词+其他?
肯定回答:Yes,主语+had
否定回答:No,主语+hadn't
④特殊疑问句:特殊疑问词或词组+一般疑问句(Had+主语+过去分词+其他)?
⑤被动语态:主语+had(hadn't)+been+过去分词+其他

过去完成时基本用法:
(1)表示在过去某一时刻或动作以前完成了的动作,即“过去的过去”。
可以用by, before等介词短语或一个时间状语从句来表示,也可以用一个表示过去的动作来表示,还可能通过上下文来表示。
By nine o’clock last night, we had got 200 pictures from the spaceship.到昨晚9点钟,我们已经收到200 张飞船发来的图片。
(2)表示由过去的某一时刻开始,一直延续到过去另一时间的动作或状态,常和for, since构成的时间状语连用。
He said he had worked in that factory since 1949.他说自从1949年以来他就在那家工厂工作。
(3)叙述过去发生的事情,在已叙述了过去发生的事情后,反过来追述或补述以前发生的动作时,常使用过去完成时。
I didn’t know a thing about the verbs, for I had not studied my lesson.我对动词一无所知,因为我没有好好学习功课。
(4)在含有定语从句的主从复合句中,如果叙述的是过去的事,先发生的动作常用过去完成时
She found the key that she had lost.她丢失的钥匙找到了。
(5)过去完成时常常用在宾语从句(或间接引语)中,这时从句中的动作发生在主句表示的过去的动作之前。
I thought I had sent the letter a week before. 我认为我一星期前就把信寄出去了。
(6)在包含有when, until等连词的复合句中,如果主句谓语动词和从句谓语动词所表示的过去动作不是同时发生的,
那么先发生的动作通常用过去完成时表示。
She didn’t go to bed until she had finished he work.她直到把工作做完之后才睡觉。
注意:如果两个动作紧接着发生,则常常不用过去完成时,特别是在包含before和after的复合句中,因为这时从句的动作和主句的动作发生的先后顺序已经非常明确,这时可以用一般过去时代替过去完成时。
(7)动词think, want, hope, mean, plan, intend等用过去完成时来表示过去未曾实现的想法,希望,打算或意图等。
We had hoped to be able to come and see you .我们本来希望能来看看你。
(8)过去完成时还可用在hardly…when…, no sooner…than…, It was the first (second, etc) time (that)…等固定句型中。
It was the third time that he had been out of work that year.这是他那一年第三次失业了。


过去完成时与现在完成时的区别:
现在完成时表示的动作发生在过去,但侧重对现在产生的结果或造成的影响,与现在有关,其结构为“助动词 have (has) + 过去分词”;
过去完成时则是一个相对的时态,它所表示的动作不仅发生在过去,更强调“过去的过去”,只有和过去某时或某动作相比较时,才用到它。
比较:I have learned 1000 English words so far.到目前为止我已经学会了 1000 个英语单词。
I had learned 1000 English words till then.到那时为止我已经学会了 1000 个英语单词。
— I'm sorry to keep you waiting. 对不起,让你久等了。
— Oh, not at all. I have been here only a few minutes.没什么,我只等了几分钟。(“等”的动作从过去某一时间点持续到现在)

过去完成时与一般过去时的区别:
虽然这两种时态都表示过去发生的动作或存在的状态,但在使用时应注意以下几点:
1. 时间状语不同:过去完成时在时间上强调“过去的过去”;而一般过去时只强调过去某一特定的时间。
比较:They had arrived at the station by ten yesterday.
They arrived at the station at ten yesterday.
2. 在没有明确的过去时间状语作标志时,谓语动词动作发生的时间先后须依据上下文来判断:先发生的用过去完成时,后发生的则用一般过去时。
She was very happy. Her whole family were pleased with her, too. She had just won the first in the composition competition.
3. 当两个或两个以上接连发生的动作用 and 或 but 连接时,按时间顺序,只需用一般过去时来代替过去完成时;另外,在 before , after , as soon as 引导的从句中,由于这些连词本身已经表示出时间的先后,因此也可以用过去时来代替过去完成时。
He entered the room, turned on the light and read an evening paper.

语法判定:
一、由时间状语来判定
一般说来,各种时态都有特定的时间状语。与过去完成时连用的时间状语有:
(1) by + 过去的时间点。如:
I had finished reading the novel by nine o'clock last night.
(2) by the end of + 过去的时间点。如:
We had learned over two thousand English words by the end of last term.
(3) before + 过去的时间点。如:
They had planted six hundred trees before last Wednesday.

二、由“过去的过去”来判定
过去完成时表示“过去的过去”,是指过去某一动作之前已经发生或完成的动作,即动作有先后关系,动作在前的用过去完成时,在后的用一般过去时。这种用法常出现在:
(1)宾语从句中
当宾语从句的主句为一般过去时,且从句的动作先于主句的动作时,从句要用过去完成时。在told, said, knew, heard, thought等动词后的宾语从句。如:
She said that she had seen the film before.
(2)状语从句中
在时间、条件、原因、方式等状语从句中,主、从句的动作发生有先后关系,动作在前的,要用过去完成时,动作在后的要用一般过去时。如:
After he had finished his homework, he went to bed.
注意: before, after 引导的时间状语从句中,由于 before 和 after 本身已表达了动作的先后关系,若主、从句表示的动作紧密相连,则主、从句都用一般过去时。如:
After he closed the door, he left the classroom.
(3)表示意向的动词,如hope, wish, expect, think, intend, mean, suppose等,用过去完成时表示"原本…,未能…"
We had hoped that you would come, but you didn't.


宾语从句:
在句子中起宾语作用的从句叫做宾语从句。
宾语从句分为三类:动词的宾语从句,介词的宾语从句和形容词的宾语从句。
宾语从句连接代词主要有:
who, whom ,whose ,what ,whoever ,whomever ,whosever, whatever, whichever 等。

宾语从句的特点:
1.宾语从句可以作及物动词、介词及形容词的宾语。
2.宾语从句的语序一律用陈述句语序。
3.连接词that引导宾语从句在句中无词义,不充当句子成份,多数情况下可以省略。
4.whether 和 if 都可引导宾语从句,但 whether后可紧跟or not;whether从句可作介词的宾语。
5.如果从句太长,可以用形式宾语it.

宾语从句的时态:
1.主句是一般现在时,从句根据实际情况使用任何时态。
例句:The headmaster hopes everything goes well.
2.主句是过去时态,从句须用过去时态的某种形式。
例句:She was sorry that she hadn’t finished her work on time.
3.当宾语从句表示的是一个客观真理或者事实时,即使主句是过去时,从句也用一般现在时态。
例句:The teacher told his class that light travels faster than sound.
4. 如果从句的动作发生在主句之前,则从句要用过去完成时态。 

宾语从句的语序:
A. 宾语从句必须用陈述语序。   
False: He is wondering when can he finish this difficult job.   
Right: He is wondering when he can finish this difficult job.
B. 有时候可以用it 作形式宾语,而把真正的宾语从句放在后面。    
Bad: I thought that he could finish this job in just two hours impossible.   
Good: I thought it impossible that he could finish this job in just two hours.  
C. 带有宾语从句的复合句的否定形式一般是否定主句。
Bad: I think he doesn’t like the English teacher.   
Good: I don’t think he likes the English teacher. 
D.  主句一般过去时态,从句也要用过去时态。
False: He wanted to know why he is crying in the corner.   
Right: He wanted to know why he was crying in the corner

宾语从句的否定转移:
主句的谓语动词是think,believe,imagine,suppose,consider,espect,fancy,guess等。
并且主句的主语是第一人称而且为一般现在时,从句的否定词一般要转移到主句上来,其反义疑问句一般与宾语从句一致。
I don’t think he will come to my party.而不能说成I think he won’t come to my party.
我认为他不会来我的舞会.
I don’t believe that man is killed by Jim,is he?
我认为那个人不是Jim所杀的,是不是?
如果宾语从句中有某个含有否定意义的形容词或副词,其反义疑问句要用肯定形式。
We find that he never listens to the teacher carefully,does he?
我们发现他从来不仔细听老师讲课,是不是?


宾语从句中引导词的用法比较
在复合句中作主句的宾语,引导词有:
连词:that (that 常可省略),whether, if
代词:who, whose, what ,which
副词:when ,where, how, why 等。

(一)that引导的宾语从句(在非正式场合that可以省略)
1.可跟that从句做宾语的动词有:
say, think, insist, wish, hope, demand, imagine, wonder, know, suppose, see, believe, agree, admit, deny, expect, explain, order, command, feel, dream, suggest, hear, mean, notice, prefer, request, require, propose, declare, report等。
例句:The boy believes that he will travel through space to other planets.
注意事项:当主句谓语动词是 think, believe, suppose, expect 等词,而宾语从句的意思是否定时,常把否定转移至主句表示。
例句:I don’t think it is right for him to treat you like that.

2.在以下情况中that不能省略
a.当句中的动词后接多于两个由that引导的宾语从句时,第一个that可省,但后面的that不可省。
例句:He said (that) you were too young to understand the matter and that he was asked not to tell you.
b.当主句的谓语动词与that宾语从句之间有插入语时,that一般不可省。
例句:Just then I noticed, for the first time, that our master was wearing his fine green coat and his black silk cap.
c.当that从句是双宾语中的直接宾语时,that不可省。
例句:I can’t tell him that his mother died.
d.注:许多带复合宾语的句子,that引导的宾语从句经常移到句子后部,而用it作形式宾语。
例句:I find it necessary that we should do the homework on time.

(二)由whether,if 引导的宾语从句
1.由whether(if)引导的宾语从句,实际上是一般疑问句演变而来的。意思是“是否”。宾语从句要用陈述句语序。
一般说来,在宾语从句中whether与if可以互换使用,但在特殊情况下if与whether是不能互换的。
例句:I wonder whether(if) they will come to our party.

2.只能用whether,不能用if引导的宾语从句
a.在带to的不定式前
例句:We decided whether to walk there.
b.在介词的后面
例句:I’m thinking of whether we should go to see the film.
c.在动词后面的宾语从句时
例句:We discussed whether we had a sports meeting next week
d.直接与or not连用时
例句:I can’t say whether or not thet can come on time.

3.只能用if不能用whether引导的宾语从句
a.if引导条件状语从句,意为“如果”
例句:The students will go on a picnic if it is sunny.
b.if引导否定概念的宾语从句时
例句:He asked if I didn’t come to school yesterday.
c.引导状语从句even if(即使)和as if(好象)时
例句:He talks as if he has known all about it.

if,whether在宾语从句中的区别
a.if和whether在作“是否”解时,引导宾语从句常放在动词know,ask,care,wonder,find out等之后,介词后一般不用if
b.少数动词,如:leave,put,discuss,doubt后的宾语从句常用whether. 
c. whether后可以加or not,但是if不可以.
d.在不定式前只能用whether.
(如:I can’t decide whether to stay. 我不能决定是否留下。)
e.避免歧异时,我们常用whether而不用if.

(三)连接代词和连接副词引导的宾语从句
这样的宾语从句实际上是由特殊疑问句变化而来的,宾语从句要用陈述句语序。
用于这种结构的动词常常是:see, say, tell, ask, answer, know, decide, show, find out, imagine, suggest, doubt, wonder, discover, understand, inform, advise等。
1.英语中的连接代词有:who,whom,whose,which,what,在句中担任主语、宾语、定语或者表语。
例句:Can you tell me whom you are waiting for?
2.英语中的连接副词有:when,where,why,how,在句中担任状语的成分。
例句:None of us knows where these new parts can be bought.


简化宾语从句常用六法:
方法一:
当主句谓语动词是hope, decide, wish, choose, agree, promise等,
且宾语从句的主语与主句主语一致时,宾语从句可简化为不定式结构。
例如:
Li Ming hopes he will be back very soon.
→Li Ming hopes to be back very soon.
We decided that we would help him.
→We decided to help him.

方法二:当主句谓语动词是know, learn, remember, forget, tell等动词,
且主句主语与从句主语一致时,宾语从句可简化为“疑问词+不定式”结构。例如:
She has forgotten how she can open the window.
→She has forgotten how to open the window.
注:当主句谓语动词是tell, ask, show, teach等动词,
且后带双宾语,从句主语和间接宾语一致时,宾语从句可简化为“疑问词+不定式”结构。例如:
Could you tell me how I can get to the station?
→Could you tell me how to get to the station?

方法三:当主句的谓语动词是order(命令),require(需要)等时,
如果主句和从句的主语不一致,宾语从句可简化为“名词(代词)+不定式”结构。例如:
The headmaster ordered that we should start at once.
→ The headmaster ordered us to start at once.

方法四:某些动词后的宾语从句,可以用介词加动名词(短语)等其他形式简化。例如:
He insisted that he should go with us.
→He insisted on going with us.
The poor boy doesn’t know when and where he was born.
→The poor boy doesn’t know the time and the place of his birth.

方法五:某些动词后面的宾语从句可转化为“宾语+V-ing形式(作宾语补足语)”结构。例如:
Liu Ping found that there was a wallet lying on the ground.
→ Liu Ping found a wallet lying on the ground.

方法六:动词seem后的宾语从句,也可以用不定式(短语)来简化,但句型需要进行适当的变化。例如:
It seemed that the boys were going to win.
→The boys seemed to win.
除上述方法外,还有一些特殊句式的转化。例如:
I found that it was difficult to learn English well.
→I found it difficult to learn English well.
Soon we found that the ground was covered with thick snow.
→Soon we found the ground covered with thick snow.
They found that the box was very heavy.
→They found the box very heavy



状语从句:
指句子用作状语时,起副词作用的句子。它可以修饰谓语、非谓语动词、定语、状语或整个句子。
根据其作用可分为时间、地点、原因、条件、目的、结果、让步、方式和比较等从句。
状语从句一般由连词(从属连词)引导,也可以由词组引起。
从句位于句首或句中时通常用逗号与主句隔开,位于句尾时可以不用逗号隔开。
状语从句分类:
1、时间状语从句
常用引导词:
when, as, while, as soon as, while, before, after, since , till, until
特殊引导词:
the minute, the moment, the second, every time, the day,the instant, immediately , directly, no sooner … than, hardly …when, scarcely … when
I didn't realize how special my mother was until I became an adult.
While John was watching TV, his wife was cooking.
The children ran away from the orchard(果园) the moment they saw the guard.
No sooner had I arrived home than it began to rain.
Every time I listen to your advice, I get into trouble.

2、地点状语从句
常用引导词:
where
特殊引导词:
wherever, anywhere, everywhere
Generally, air will be heavily polluted where there are factories.
Wherever you go, you should work hard.

3、原因状语从句
常用引导词:
because, since, as, for
特殊引导词:
seeing that, now that, in that, considering that, given that, considering that, as much as, so much as
My friends dislike me because I'm handsome and successful.
Now that everybody has come, let's begin our conference.
The higher income tax is harmful in that it may discourage people from trying to earn more.
Considering that he is no more than 12 years old, his height of 1.80 m is quite remarkable.

4、目的状语从句
常用引导词:
so that, in order that
特殊引导词:
lest, in case, for fear that,in the hope that, for the purpose that, to the end that
The boss asked the secretary to hurry up with the letters so that he could sign them.
The teacher raised his voice on purpose that the students in the back could hear more clearly.

5、结果状语从句
常用引导词:
so that, so… that, such … that,
特殊引导词:
such that, to the degree that, to the extent that, to such a degree that,
He got up so early that he caught the first bus.
It's such a good chance that we must not miss it.
To such an degree was he excited that he couldn't sleep last night.

6、条件状语从句
常用引导词:
if, unless,
特殊引导词:
as/so long as, only if, providing/provided that, suppose that, in case that, on condition that
We'll start our project if the president agrees.
You will certainly succeed so long as you keep on trying.
Provided that there is no opposition, we shall hold the meeting here.

7、让步状语从句
常用引导词:
though, although, even if, even though
特殊引导词:
as(用在让步状语从句中必须要倒装),while ( 一般用在句首 ),no matter …, in spite of the fact that, while, whatever, whoever, wherever, whenever, however, whichever
Much as I respect him, I can't agree to his proposal.
尽管我很尊敬他, 我却不同意他的建议。
The old man always enjoys swimming even though the weather is rough.
No matter how hard he tried, she could not change her mind.
He won't listen whatever you may say.

8、比较状语从句
常用引导词:
as(同级比较), than(不同程度的比较)
特殊引导词:
the more … the more … ; just as …, so…; A is to B what /as X is to Y; no … more than; not A so much as B
She is as bad-tempered as her mother.
The house is three times as big as ours.
The more you exercise, the healthier you will be.
Food is to men what oil is to machine. 食物之于人,犹如油之于机器。

9、方式状语从句
常用引导词:
as, as if, how
特殊引导词:
the way
When in Rome, do as the Roman do.
She behaved as if she were the boss.
Sometimes we teach our children the way our parents have taught us.

状语从句用法:
时间状语从句
(1) when引导的时间状语从句
①.when引导的时间状语从句,其动词既可以是延续性动作的动词,也可以是瞬间性动作的动词,而且可以表示主句的动作和从句的动作同时发生,或者从句的动作发生在主句的动作之前。如:
when you apply for a job, you must present your credentials.
当你申请工作时,你必须递交你的有关证件。(同时)
when the students heard the teacher’s footsteps, they all atopped talking.
当学生们听到老师的脚步声时,他们都停止了讲话。(从句动作发生在前)
② when还可表示just then(正在那时,突然)的意思,此时其所引导的从句只放在主句之后。如:
we were about to start when it began to rain.
我们正要动身,突然天下起雨来。
The game had hardly/scarcely/barely begun when it started raining.
比赛刚刚开始就下起雨来。
(2) as引导的时间状语从句
as引导的时间状语从句其动词的动作是延续性的,而且侧重表示主句和从句的动作并相发生:
We were having breakfast as she was combing her hair.
她梳头时我们在吃早饭。
It will warm up a little bit on Sunday as the cold front passes.
寒流一过,星期日就会有点暖意了。
(3) while引导的时间状语从句
while表示“在某一段时间里”或“在……期间”,其所引导的从句的动作是延续性的,并侧重表示和主句的动作同时发生。如:
When the teacher paraphrased the text in English, the students listened attentively and took notes.
当老师用英语解释课文时,学生们聚精会神地听并做着笔记。
I can learn while I work.
我可以边工作边学习。
(4) before引导的时间状语从句
① before“在……之前”
I have finished my dissertation before my supervisor went abroad.
在我的导师出国之前,我已完成了我的学位论文。
I’ll be back before you have left.
你离开之前我就会回来。
② before“……之后才”
It may be many years before we meet again.
可能要过许多年我们才能再见了。
It was three days before I came back.
他三天后才回来。
(5) as soon as/once/directly/the instant等引导的时间状语从句
as soon as 是最常见的表示“一……就”的从属连词,其他连词还有once,directly,immediately,instantly,the instant (that),the minute(that) ,the moment(that)等,它们通常都可与as soon as换用。如:
As soon as we got home, the telephone rang.
我们一到家,电话就响了。
I recognized her immediately I saw her.
我一看见她就认出她来了。
Directly the teacher came in everyone was quiet.
老师一进来,大家就静了下来。
(6) hardly...when/no sooner...than引导的时间状语从句
关联从属连词hardly/barely/scarcely...when和no sooner...than的意思是“刚……就”,它们所引导的从句中的谓语动词通常为过去完成时。如:
He had no sooner (no sooner had he)arrived home than he was asked to start on another journey.
他刚一到家,就又要他出另一次差。
No sooner had the words been spoken than he realized that he should have remained silent.
这些话刚一出口,他就意识到自己应该保持沉默。
(7) since引导的时间状语从句
在含有since引导的时间状语从句的复合句中,从句的谓语动词通常为一般过去时,主句的谓语动词通常为现在完成时、过去完成时和一般现在时:
We’ve never met since we graduated from the college.
大学毕业后我们就再没见过面。
Great changes have taken place since you left.
你走了以后,这里发生了巨大变化。
(8) till/until引导的时间状语从句 till和until同义,作“直到……时(为止)”解,till多用于非正式文体,until多用于句首。如:
Donald will remain in college until(till) he finishes his Ph.D course.
唐纳德将留在学校直到完成他的博士学位课程。
I won’t go with you until(till) I finished my homework.
等我做完作业我才和你一起去。
(9) whenever/each time/every time引导的时间状语从句
whenever在引导时间状语从句时作“每当;每次”解,each time和every time与whenever同义,通常可以与它换用。如:
The roof leaks whenever it rains.
每逢下雨屋顶就漏雨。
Whenever certain chemicals are mixed together,heat is produced.
某些化学物质被混到一起时,就会产生热。
Whenever/ Every time/ Each time I met her, she was studying.
我每次看见她时,她总是在学习。

状语从句 - 地点状语从句
(1) when引导的时间状语从句
从属连词where“在(或到)……的地方”
Where there is a will, there is a way.
有志者事竟成。
Put it where you found it.
把它放在原来的地方。
① where 在地点状语从句中,除指地点外,还可指处境等。如:
He said he was happy where he was.
他说他对自己的处境很满意。
It’s your fault that she is where she is.
她今天落到这个地步都怪你。
② 有时地点状语从句中的某些词可以省略。如:
Fill in the blanks with the given phrases. Change the form where necessary.
用所给的短语填空,必要的地方可以改变其形式。
Avoid structure of this kind where possible.
只要可能,就要避免这种结构。
(2) wherever引导的地点状语从句
从属连词wherever“在(或到)……的各个地方”:
You can go wherever(anywhere) you like these days.
这些天你可以去你想去的地方。
Where (Everywhere) they went, the experts were warmly welcomed.
专家每到一处, 都受到热烈的欢迎。
Sit down wherever you like.
你喜欢坐哪儿就坐哪儿。

状语从句 - 原因状语从句
 (1) because引导的原因状语从句
because表示人们不知道的直接的原因或理由,着重点在从句,其所引导的从句,为全句句意的中心所在。
通常用于回答why引出的疑问句,语气最强,除特别强调外,该从句一般位于主句后面。
I didn’t go abrord with her because I couldn’t afford it.
我没有和她一起出国是因为费用太高。
Don’t scamp your work because you are pressed for time.
不要因为时间仓促而马马虎虎。
(2) as引导的原因状语从句
as引导的原因状语从句所传递的通常是已知信息,从句多位于主句之前,通常可以和since换用。如:
As I didn’t know the way,I asked a policeman.
我不认识路,因而问警察。
As it is snowing, we shall not climb the mountain.
由于在下雪,我们不去爬山了。
(3) since引导的原因状语从句
since引导的原因状语从句所传递的通常是已知信息,从句多位于主句之前,通常可以和as换用。如:
Since traveling by air is much faster,they decided to take a plane.
既然乘飞机旅行快得多,他们就决定坐飞机。
Since you won’t help me ,I’ll ask someone else.
你既然不帮我,那我就请别人帮忙。
(4) now(that)引导的原因状语从句
now(that)“因为;既然”,通常可以和since换用。其中that可省去,用来表示一种新的情况,再加以推论。如:
Now(that) you?蒺ve passed your test you can drive on your own.
你既已考试合格,就可以独自开车了。
I do remember,now (that) you mention it.
你这一提,我倒的确想起来了。
(5) seeing (that)引导的原因状语从句
Seeing (that)“鉴于;由于”,通常用于非正式文体。如:
Seeing (that) the weather is bad,we’ll stay at home.
天气不好,我们还是呆在家里吧。
Seeing that he’ s ill,he’s unlikely to come.
(6) in that引导的原因状语从句
in that“因为;基于……的理由”,可以和because换用,多用于正式文体,它所引导的原因状语从句总是位于主句之后。如:
Advertisement is distinguished from other forms of communication in that the advertiser pays for the message to be delivered.
广告不同于其他交际形式,因为登广告的人要为其所提供的信息付费。
I’m in a slightly awkward position, in that he’s not arriving until 10th.
我的处境有点难堪,因为他要十号才来。

状语从句 - 目的状语从句
 (1) in order that引导的目的状语从句
in order that“为了;以便”。多用于正式文体,通常可以与so that换用。如:
You stopped at Hangzhou in order that they could go around West Lake.
他们在杭州停了下来,以便游览西湖。
The expert spoke slowly in order that everyone should understand.
专家讲得很慢,以便人人听得懂。
(2) so (that)引导的目的状语从句
so that“为了;以便”。so that通常可以与in order that换用,它所引导的目的状语从句总是放在主句之后,在非正式文体中,常省略that。如:
Speak clearly so that they may understand you.
你要讲得清楚,他们才听得懂。
She wanted tea ready at seven so she could be out by eight.
她要七点钟备好茶点,这样她八点以前就可以出门了。
(3) in case/for fear (that)/lest等引导的目的状语从句
in case,for fear(that)和lest这三个从属连词都表示否定目的,意思是“以免”,“以防”。
in case多用于英国英语,它所引导的从句中的谓语动词可以是陈述语气形式,也可以是虚拟语气形式;
for fear(that)引导的从句中的谓语带有may,might,should等情态动词;
lest用于正式文体,它所引导的从句中的谓语动词用虚拟语气形式。如:
Take your umbrella with you,lest it should rain.
带上你的伞,以防下雨。
Take your umbrella in case it rains.
带上你的伞,以防下雨。
He took an umbrella with him for fear that it might rain.
他带了一把伞,以防下雨。
状语从句 - 结果状语从句
(1) so that引导的结果状语从句
① so that引导的结果状语从句只能位于主句之后,中间可以有逗号。如:
Suddenly it began to rain heavily,so that it was almost impossible to carry on driving.
突然下起了大雨,几乎无法继续开车。
Linda phoned me in on arrival so that I know she was safe and sound.
琳达到达后给我打了电话,因而我知道她平安无事。
②“so that”既可引导结果状语从句也可引导目的状语从句。
究竟是引导的结果状语从句还是目的状语从句,除了根据句意来判断外,还可根据结构形式来加以判断。
若从句前有逗号,一般为结果状语从句,如果从句中有情态动词,通常则为目的状语从句。如:
They started out early, so that they didn’t miss the train.
他们早早就出发了,所以没误火车。(结果状语从句)
They started out early so that they would not miss the train.
他们早早出发是为了不误火车。(目的状语从句)
(2) so...that引导的结果状语从句
so...that“如此……以致”,that在非正式文体中可以省略,so后面接形容词或副词。如:
She spoke so fast that nobody could catch what she was saying.
她说话如此之快竟没有人听出来她在讲什么。
There is so little time left that I have to tell you about it latter.
现在剩下的时间不多了,我只好以后再给你讲这件事。
(3) such...that引导的结果状语从句
引导结果状语从句的such...that的具体内容是:such+a/an+形容词+名词+that从句。
其中的名词可以是可数名词的单数或复数,也可以是不可数名词。
such+a/an+形容词+单数名词+that从句可换成so+形容词+a/an+单数名词+that从句。如:
The Japanese student made such rapid progress that he soon began to write article in Chinese.
那个日本留学生进步很快,不久就开始用中文写文章了。
The professor told us such a funny story that all the students laughed.
(=The professor told us so funny a story that all the students laughed.)
教授讲了个很有趣的故事,(以致于)所有的学生都笑了起来。
(4) such that引导的结果状语从句
such that引导的结果状语从句多用于正式文体,主句为“主—系—表”句型。如:
The force of the explosion was such that it blew out all the windows.
爆炸的力量很大,所有的窗户都被炸掉了。
His anger was such that he lost control of himself.
他气得不能克制自己的感情。

状语从句 - 条件状语从句 
(1) if引导的条件状语从句
if可引导非真实条件状语从句(见“虚拟语气”)和真实条件状语从句。如:
If he said that,he can’t be telling the truth.
如果他说了那样的话,他不可能是说实话。
(2) unless引导的条件状语从句
unless引导的是否定条件状语从句,在意义上相当于if...not,而且语气较强,一般不用于虚拟语气。如:
You’ll be late unless you hurry.
你会迟到的,如果不赶快的话。
(3) if only引导的条件状语从句
if only在引导条件状语从句时意为“只要;如果”。如:
I’ll let you use the car if only you keep it in good condition.
只要你把车保养好,我就让你用。
(4) as/so long as引导的条件状语从句
as/so long as意为“只要;如果”。如:
As long as it doesn’t rain, we can play.
只要不下雨我们就能玩。
(5) provided (that)/providing (that)引导的条件状语从句
provided (that)/providing (that)意为“如果;只要”。如:
I will agree to go provided’ providing (that my expense are paid.)
假如为我负担费用,我就同意去。
Providing you promise not to tell anyone else I’ll explain the secret.
状语从句 - 让步状语从句
(1) although/though引导的让步状语从句
although和though,都作“虽然;尽管”解,通常可以换用,although的语气较重。
如果要强调“但是”语气,可使用yet,still或nevertheless来表示“但是”、“依然”或“然而”之意。
Although they have been talking for a long time, he cannot make her believe him.
虽然和她谈了半天,他还是不能让她信任自己。
(2) even if引导的让步状语从句
even if “即使,纵然”,从句表示的是尚未发生的动作或存在的情况。如:
Even if it rains tomorrow,we won’t change our plan.
即使明天下雨,我们也决不改变计划。
Even if I failed again, I will not give up the experiment.
即使我再次失败,我也决不会放弃实验。
(3) even though引导的让步状语从句
even though“虽然,尽管”,从句所表示的是已经发生的动作或存在的情况,通常可以和although/though换用。如:
Even though I didn’t understand a word,I kept smiling.
即使我一个字也不懂,我还是保持微笑。
Even though you say so,I do not believe it.
即使你这样说,我也不信。
(4) much as引导的让步状语从句
much as“虽然,尽管”,通常可以和although/though换用:
Much as I’d like to,I can’t come.
我虽然很想来,但是来不了。
Much as I admire his courage,I don’t think he acted wisely.
我虽然佩服他的勇气,但我认为他这样做是不聪明的。
(5) while引导的让步状语从句
while“虽然,尽管”,多用于正式文体,通常可换作although/though。如:
While I understand your point of view,I do not share it.
我虽了解你的观点,但不敢苟同。
While I sympathize,I really can’t do very much to help.
虽然我很同情,但我确实帮不了什么忙。
(6) whatever/No matter what引导的让步状语从句
whatever和no matter what用法相同,都作“无论什么”解,后者多用于非正式文体。如:
Whatever/No matter what he says,don’t go.
不管他说什么,你都不要走。
We are determined to fulfill the task,whatever/no matter what happens.
不管发生什么了,我们决心完成任务。
(7) whichever/no matter which引导的让步状语从句
whichever和no matter which用法相同,都作“无论哪个”解,后者多用于非正式文体。如:
Whichever/No matter which you buy, there is a six-month guarantee.
不论你买哪个,都有六个月的保修期。
Whichever/No matter which of the two men had stolen her purseBarbara was determined to find them.
不管这两个人是谁偷了她的钱包,芭芭拉决心找到他们。
(8) whoever/no matter who引导的让步状语从句
whoever和no matter who用法相同,都作“无论谁”解,后者多用于非正式文体。如:
You can’t come in, whoever you are.
不管你是谁,都不能进来。
Whoever/No matter who wants to speak to me on the phone, tell him I’m busy.
不管谁要我接电话, 就说我现在正忙着呢。
(9) whereverno matter where引导的让步状语从句
wherever和no matter where用法相同,都作“无论在(或到)哪里”解,后者多用于非正式文体。如:
Wherever/No matter where you go, I’m Right Here Waiting fo ryou.
无论你到哪里,我都依然在这里等着你。
(10) however/no matter how引导的让步状语从句
however和no matter how用法相同,都作“无论如何……”解,后者多用于非正式文体。
However much you regret doing that, there is nothing you can do about it now.
无论你可能多么懊悔你曾经做过的事,现在也无济于事了。
However high it may be,it can’t reach the sky.
它不论有多高,也高不到天上去。
(11) whenever/no matter when引导的让步状语从句
whenever和no matter when用法相同,都作“无论何时”解,后者多用于非正式文体。如:
Whenever I’m unhappy,he cheers me up.
每当我不高兴时,他就给我鼓劲儿。
(12)(no matter) whether...or引导的让步状语从句
whether...or和no matter whether...or用法相同,都作“不论……还是”解,后者的语气强一些。如:
When It Rains or not, we’re playing football on Sunday.
无论下不下雨,我们星期天一定踢足球。
(13) as引导的让步状语从句
as在引导让步状语从句时作“虽然;尽管”和“即使”解,但是它不位于句首,在它前面的可以是形容词、名词、副词等。如:
Strong as you maybe, you cannot lift it.
虽然你可能很有力气,你却无法把它提起来。
Late as it was, they continued to study.
时间尽管不早了,他们仍继续学习。

状语从句 - 方式状语从句
(1) as引导的方式状语从句
as在引导方式状语从句时意为“以……方式;如同……那样”,从句有时是省略句。如:
Do as I say. 要照我说的做。
I did just as you told me. 我正是照你说的办的。
Air is to man as water is to fish. 空气之于人犹如水之于鱼。
(2) as if/as though引导的方式状语从句
as if和as though的用法相同,都作“好像,仿佛”解。如:
二者引导的状语从句往往用虚拟语气,表示与事实相反。as if比as though更为常用。
但也可用陈述语气,表示所说的情况是事实或实现的可能性较大。如:
They looked at me as if ‘as though I were mad.
他们瞧着我好像我发疯了似的。
They look as if/as though they know each other.
他们看来好像互相认识。

状语从句 - 比较状语从句
(1) as...as 引导的比较状语从句
as...as表示同级比较,主句中用形容词或副词的原级形式,从句常常为省略句。如:
We were as fortunate as them (they were)
我们和他们一样幸运。
I hope she will make as much progress as you (have done).
我希望她将取得和你同样的进步。
(2) not so/as...as 引导的比较状语从句
not so/as...as表示同级比较,主句中用形容词或副词的原级形式,从句常常为省略句。如:
That’s not so/as simple as it sounds.
那件事情不像听起来那么简单。
(3) than引导的比较状语从句
than引导的比较状语从句表示同等比较,主句中用形容词或副词的比较级形式,从句常常为省略句。如:
He has lived here longer than I(has lived).
他在这儿住的时间比我长。
They love the girl than(they love) him.
他们爱这个女孩而不爱他。
(4) the..., the...引导的比较状语从句
The more you listen to English, the easier it becomes.
英语听得越多就越容易。


虚拟语气:
用来表示说话人的主观愿望或假想,而不表示客观存在的事实,所说的是一个条件,不一定是事实,或与事实相反。
虚拟语气通过谓语动词的特殊形式来表示。
初中阶段主要学习在条件句中的虚拟语气。
条件句中的虚拟语气根据不同的时间有三种不同的形式。

时间

条件从句 

主句 

例句 

与现在事实相反

If+主语+过去式(系
动词be多用were)

would
主语+should+V 
could

见①②句

与过去事实相反

If+主语+had+过去分词

Would
主语+should+have+过    
去分词 
could

见③④句

与将来事实相反

过去式    
If+主语+ should+V原 
were to+V

would
主语+should+V 
 could 
 

见⑤⑥句

例句:
① If I were rich, I would travel around the world.
② If I won a million dollars, I would give it to charities.
③ If you had taken my advice, you wouldn’t have failed.
④ If I had known that earlier, I wouldn’t have done it. 
⑤ If he should go to Tsinghua University, he would make full use of his time.
⑥ If he were to come here, he would tell us about it.


虚拟语气误区:
1.混合条件句的主从句时态不会灵活变化;
2.省略if时,句子调整不正确;
3.不会去找意思中的“应该”含义;
4.陷在虚拟中出不来,把真实条件句当成虚拟条件句。

省略虚拟条件:
1.省略连词if
有时可将条件从句的连词if省略,但此时应用倒装句型,即把从句中的were,should,had 等提到句首:
Were I Tom,I would refuse. 如果我是汤姆,我会拒绝。
Should it be necessary,I would go. 假若有必要,我会去的。
Had it not been for the bad weather we would have arrived on time. 若不是天气坏,我们就准时到达了。
【注】
① 若条件从句为否定句,否定词not应置于主语之后,而不能与were,should,had 等缩略成Weren’t,Shouldn’t,Hadn’t而置于句首。
② 有时省略if后提前的had不是助动词:
Had I time,I would come. 假若我有时间,我会来的。(=If I had time…)

2.省略主语和动词be
若主从句主语一致,且谓语部分包含有动词be,通常可将主语和动词be省略:
If repaired earlier,the tractor would not have broken down.
要是早点儿修一下,拖拉机就不会抛锚了。(=If it had been repaired earlier…)

3.省略“it+be”
If necessary,I would send more farmhands to help you.
如果需要的话,我会派更多的人去帮你。(=If it was necessary,…)

4.省略条件从句
这样的省略通常需要借助一定的上下文,即省略条件从句后,所剩下的主句的意思在一定的上下文中意思是清楚的:
I might see her personally. It would be better.
我可以亲自去看她,这样好一些。(=If I saw her personally,it would be better.)

含蓄条件句中
(1) 条件暗含在短语中。如:
We didn’t know his telephone number; otherwise we would have telephoned him.
我们不知道他的电话号码,否则我们就会给他打电话。(暗含条件是otherwise)
Without your help,we wouldn’t have achieved so much.
没有你的帮助,我们不可能取得这么大的成绩。
(暗含条件是介词短语without your help)
But for your help,I would not have succeeded in the experiment.
如果没有你的帮助,我的实验就不会成功。(暗含条件是but for your help)
It would cause great trouble not to lubricate the bearing immediately.
不立即润滑轴承就会引起很大的故障。
(暗含条件是not to lubricate the bearing immediately)
(2) 条件暗含在上下文中。如:
I would not have done it that way.
我是不会那么做的。(可能暗含if I were you)
I was busy that day. Otherwise I would have come to help you.
我那天很忙。否则我会来帮你的。(可能暗含if I hadn’t been so busy.)
You might come to join us in the discussion.
你可以参加我们的讨论。(可能暗含if you wanted to)
I would have bought the DVD player.
我是会买下那台影碟机的。(可能暗含if I had the money)
But for the storm,we should have arrived earlier.
要不是碰到暴雨,我们还会早些到。(可能暗含if it had not been for the storm)。


条件状语从句用法及动词形式:
1、表示与现在事实相反的情况:
从句:If 主语+过去时(Be动词用were)
主句:主语+should/would/could/might+do
eg: 
1.If I were you,I would take an umbrella.
如果我是你,我会带把伞。(事实:我不可能是你)
2.If I knew his telephone number,I would tell you.
如果我知道他的电话号码,我就会告诉你。(事实:不知道)
3.If there were no air or water,there would be no living things on the earth.
如果没有水和空气,地球上就不会有生物。(事实:地球上既有空气也有水)
4.If I had any money with me,I could lend you some.
如果我带钱了,我就会借给你些。(事实:没有带钱)
5.If he studied harder,he might pass the exam.
如果他再努力些,就能通过考试了。(事实:没有努力)
6.she looked at me as if I had been a stranger.
她看我的样子好像我是一个陌生人。(事实:我并非陌生人) 
2、表示与过去事实相反的情况
从句:If 主语+had+done
主句:主语+should/would/could/might+have done
eg:
1.If I had got there earlier,I should/could have met her. 如果我早到那儿,我就会见到她。(事实:去晚了)
2.If he had taken my advice,he would not have made such a mistake. 如果他听我的劝告的话,就不会犯这样的错误了。(事实:没有听我的话)
3、表示对将来情况的主观推测
主句:主语+should+do 
从句:
①if+主语+were to do
②if+主语+should/would/could/might+do
③if+主语+did(动词过去式)/were
eg:
1.If he should come here tomorrow,I would talk to him.
如果他明天来这儿的话,我就跟他谈谈。(事实:来的可能性很小)
2.If there were a heavy snow next Sunday,we would not go skating.
如果下周日下大雪,我们就不能去滑冰了。(事实:下雪可能性很小)
3.If she were to be here next Monday,I would tell her about the matter.
如果她下周一来这儿的话,我就会告诉她这件事的始末。(事实:来的可能性很小)
4、 有时,虚拟条件句中,结果主句和条件从句的谓语动作若不是同时发生时,虚拟语气的形式应作相应的调整。这种条件句叫错综条件句。
①从句的动作与过去事实相反,而主句的动作与现在或现在正在发生的事实不符。
eg:
If I had worked hard at school,I would be an engineer,too.
如果我在学校学习刻苦的话,我现在也会成为一个工程师了
If they had informed us,we would not come here now.
如果他们通知过我们的话,我们现在就不会来这里了。
②从句的动作与现在事实相反,而主句的动作与过去事实不符。如:
If he were free today,we would have sent him to Beijing.
如果他今天有空的话,我们会已经派他去北京了。
If he knew her,he would have greeted her.
要是他认识她的话,他肯定会去问候她了。
5、 当虚拟条件句的谓语动词含有were,should,had时,if可以省略,这时条件从句要用倒装语序,即把were,should,had等词置于句首,这种多用于书面语。eg:
Should he agree to go there,we would send him there.
要是他答应去的话,我们就派他去。
Were she here,she would agree with us.
如果她在这儿的话,她会同意我们的。
Had he learnt about computers,we would have hired him to work here.
如果他懂一些电脑知识的话,我们已经聘用他来这里工作了。
6、非真实条件句中的条件从句有时不表达出来,只暗含在副词、介词短语、上下文或其他方式表示出来,这种句子叫做含蓄条件句,在多数情况下,条件会暗含在短语中,如without…,but for…等  
eg:
But for his help,we would be working now.
要不是他的帮助,我们还会在工作呢。
Without your instruction,I would not have made such great progress.
要是没有你的指导,我不会取得如此大的进步。
We didn't know his telephone number,otherwise we would have telephoned him.
我们不知道他的电话号码,否则我们就会给他打电话。
7、有时,虚拟条件句中,主、从句可以省略其中的一个,来表示说话人的一种强烈的感情。
①省略从句
He would have finished it. 他本该完成了。
You could have passed this exam. 你本能通过这次考试的。
②省略主句
If I were at home now. 要是我现在在家里该多好啊。
If only I had got it. 要是只有我得到它了该多好啊。
8.注意,在虚拟语气的从句中,动词be的过去时态一律用were,不用was。
eg:If I were you,I would go to look for him.
如果我是你,就会去找他。


虚拟语气的其他用法:
1、一想要( desire )
一宁愿( prefer )
一坚持( insist )
二命令( order , command )
三建议( advise , suggest , propose/recommend)
四要求( demand , require , request , ask)中,
无论主句谓语动词为何种时态,从句的谓语动词都用:"should + do"。should可以省略。
eg:
He suggested that we (should) take the teacher's advice.
He insisted that we (should) take the teacher's advice.
He demand that we (should) take the teacher's advice.
He ordered that we (should) take the teacher's advice.
insist 意为“坚持某种动作”才用虚拟语气;意为“坚持某种观点,某个事实”则不用虚拟语气。eg:
He insists he is a student.
他坚持说他是个学生。
这个语句表示的是事实,因此在这个语句中不能使用虚拟语气。
suggest意为“建议”才用虚拟语气,意为“暗示”则不用虚拟语气。
eg:
His face suggests that he looks worried .
他的表情暗含着他很担心。
这个句子本身是事实,因此它就没有用到虚拟语气。
2、表情绪、观点的形容词或名词也要用虚拟语气。如:
necessary、important、impossible、natural、strange、surprising、funny、right、wrong、better、a pity ,the shame ,no wonder等。
句型:It is.......that +主语从句,从句的谓语动词都要用 should+原型或 只用动词原型。
eg:
Do you think it is necessary that he (should)not be sent to Lingbao.
It is strange that such a person should be our friend.
奇怪的是这样一个人会成为我们的朋友。
注:这一点还没有准确的说法,希望善心人能把这点补充完全。
3、 在even if,even though 所引导的让步状语从句中用may/might+动词原形,may/might可以省略,表示与现在相反的情况;
从句用过去完成时,表示与过去相反的情况,类似的词有though/even though/whatever/however/so long as; 主句、从句的结构与if所引导的条件从句结构相同。
eg:
Even if he were here himself,he should not know what to do.
即使他亲自来也不知该怎么办。(事实:他没来)
Nobody could save him even though Hua Tuo should come here.
即使华佗在世也救不了他。(事实:华佗不在世)
4、 在whatever,whichever,whenever,whoever,wherever,however,no matter wh-等引导的让步状语从句中,从句虚拟语气结构为:指现在或将来:may +do。
eg:
We will finish it on time no matter what may happen.
不管发生什么事,我们都要按时完成。
We will find him wherever he may be.
无论他在哪里,我们都要找到他。
I will wait for him no matter how late he may come.
不管他来的多么晚,我都会等他。
指过去:may +have done 。
eg:
You mustn't be proud whatever great progress you may have made.
不管你取得了多么大的进步,你也不能骄傲。
We must respect him no matter what mistakes he may have made.
不管他犯过什么错误,我们必须尊敬他。
5、一般would rather,had rather,would sooner等之后的宾语从句常表示与客观事实不相符的一种愿望,故使用虚拟语气。其虚拟语气的结构为:
过去 had + done 
现在 过去时(be 用were )
将来 过去时(be 用were ) (would rather 将来情况用一般过去时)
eg:
I'd rather you had seen the film yesterday.
我倒想你昨天看过了这场电影。
I'd rather you were here now.
我倒想你现在在这儿。
We'd rather you went here tomorrow.
我们倒想你明天去那儿
注:注意would rather,had rather,would sooner的细微差别,可以百度一下查查。
6、虚拟语气还可用在定语从句中,表示:“早该做某事了”时,定语从句中的谓语动词须用虚拟语气,其虚拟语气的结构为:
It is (high / about) time that + 主语+ 动词的过去式/ should + do(优先使用动词过去式) ,即从句用虚拟过去式。
It is time that I went to pick up my daughter at school.
我该去学校接我的女儿了。
It is high time you should go to work.
你早该上班了。
7、 简单句中的虚拟语气
(1) 说话时,为了表示客气、谦虚、委婉而有礼貌,言语常使用虚拟语气。其虚拟语气的结构形式常为:would / could / might / should +do。
eg:
Would you mind me shutting the door?
你介意我把门关起来吗?
You should always learn this lesson by heart.
你要把这个教训牢记于心。
I should agree with you.
我本该同意你的观点。(委婉的不同意)
(2)表示“祝愿”时,常用may + 主语+ do。
eg:
May you have a good journey!
祝你一路顺风。
May your youth last forever!
祝你青春永驻。
(3)表示强烈的“愿望”、“祝愿”时,常用do。
eg:God bless us. 上帝保佑。
(4)习惯表达中常用的虚拟语气。
① 提出请求或邀请。eg:
Would you like to have a talk with us this evening?
今天晚上来跟我们聊天好吗?
Could I use your bike now?
我可以用一下你的单车吗?
② 陈述自己的观点或看法。eg:
I should be glad to meet you.
见到你我会很高兴。
I would try my best to help you.
我会尽力帮助你。
③提出劝告或建议。eg:
You'd better ask your father first.
你最好先问一问你的父亲。
You should make a full investigation of it first.
你应该先全面调查一番。
④ 提出问题。eg:
Do you think he could get here on time
你认为他能按时来吗?
Do you expect he would tell us the truth?
你期望他会告诉我们真相吗?
⑤表示对过去情况的责备时,常用虚拟语气。其虚拟语气的结构为:情态动词 + have done。
eg:
You should have got here earlier. 你早该到这里了。
You should have returned it to him. 你早该把它还给他了。
8、虚拟语气在方式状语从句的应用。详见百度百科之方式状语从句词条。


主语从句:
在复合句中充当主语成分的句子叫做主语从句。常规主语从句,即句子在复合句中充当一个主语。 主语从句的时态:不受主句的时态影响和限制。 
例如:
That he finished writing the composition in such a short time surprised  us all. 
What we need is time. 
It is certain that he will win the match. 
(1) 引导主语从句连词有that,whether,who,what,whatever等    
(2) 连词位于句首不能省略    
(3) 主语从句大多数情况下视为第三人称单数

主语从句引导词:
1、由连词that引导的主语从句。
例如:That you will win the medal seems unlikely.
你想获得奖牌看起来是不可能的。
That you are so indifferent bothers me.
你如此冷淡使我很烦恼。
That she survived the accident is a miracle.
她在事故中幸免于难简直是奇迹。
2、用连接代词或连接副词if, whether 引导的主语从句。
例如: Which of them escaped from the prison is still a mystery.
他们哪一个是从监狱里逃跑的,仍然是个谜。
When they will come hasn’t been made pubic.
他们什么时候来还不知道。
Whether she is coming or not doesn’t matter too much.
她来不来都无关紧要。
3、用关系代词引导的主语从句。
例如:What you need is more practice.
你所需要的是更多的训练。
What I want to know is this. 我想知道的就是这事。
Whatever we do is to serve the people.
我们无论做什么都是为人民服务。
4、主语从句可以直接放在主语位置上,也可以用it作形式主语,而将从句放在句末(尤其是当谓语较短时)。
例如:That light travels in straight lines is known to all.
光沿直线传播,这是众所周知的事。
=It is known to all that light travels in straight lines.
众所周知光沿直线传播。
When the plane is to take off has not been announced .
飞机何时起飞还没有宣布。
= It has not been announced when the plane is to take off.
还没有宣布飞机何时起飞。
当what引导的主语从句表示“…的东西”时,一般不用it作形式主语。
错:It is a book what he wants.
对:What he wants is a book. 他想要的是本书。
如果带主语从句的句子是疑问式,则必须用it作形式主语的结构。
例如:Has it been settled who will be sent to carry out the task ?
谁将被派去执行这项任务决定了吗 ?
主语从句与宾语从句区别:
主语从句与宾语从句两者的用法和在句中的作用是不同的,下面从它们的各自用法来介绍。
一.主语从句
主语从句 定义:在句子中担当主语的是一个从句,这个从句就叫做主语从句。
主语从句是在复合句中充当主语的从句,通常放在主句谓语动词之前或由形式主语it代替,而本身放在句子末尾。
1. It 作形式主语和it引导强调句的比较
①主语从句常用it作形式主语,一般常用句型为:It is+{名词/形容词/过去分词}+主语从句例如:
It is still a question whether she will come or not.
It is strange that you should like him.
It is still unknown which team will win the match.
另外,还有一些比较多见的结构:
It turned out that……;
It has been proved that……;
It happened/occurred that……;
It is well-known that……等等
②而强调句则不同,它的结构是:It+be+被强调部分+that+从句
强调主语:It is the times that produce their heroes.时势造英雄
强调宾语:It is English that Prof.Lin teaches us.
强调状语:It was in shanghai that I saw the film.
判断是否是强调句有一个方法,就是将that以后的“句子的其余部分”拿出来单独看,看有没有缺成分,缺的是什么成分,再把谓语动词后面that前面的那部分,带到你认为缺成分的地方,如果放进去是一句完整的句子了,那就说明是强调句。

2. 用it 作形式主语的结构
(1) It is +名词+that从句
It is a fact that … 事实是……
It is an honor that …非常荣幸
It is common knowledge that …是常识
(2) it is +形容词+that从句
It is natural that… 很自然……
It is strange that… 奇怪的是……
(3) it +不及物动词+that从句
It seems that… 似乎……
It happened that… 碰巧……
(4) it is+过去分词+that从句
It is reported that… 据报道……
It has been proved that… 已证实……

3.主语从句不可位于句首的五种情况
(1) if 引导的主语从句不可居于复合句句首。
(2) It is said , (reported) …结构中的主语从句不可提前。例如:
It is said that President Jingo will visit our school next week.
(3) It happens…, It occurs… 结构中的主语从句不可提前。例如:
It occurred to him that he failed in the examination.
(4) It doesn’t matter how/whether …结构中的主语从句不可提前。例如:
It doesn’t matter whether he is wrong or not.
(5) 含主语从句的复合句是疑问句时,主语从句不可提前。例如:
Is it likely that it will rain in the evening?

4. What 与that 在引导主语从句时的区别
What 引导主语从句时在从句中充当句子成分,如主语.宾语.表语,而that 则不然。例如:
What you said yesterday is right.

宾语从句用以区分主语从句的几个特征:
1、引导词:whatwhichwhosewhenwhetherifwhere

2、语序:宾语从句必须是用陈述语句。
如:I think that you must work harder.
宾语从句的引导词、连接词的区别、否定转移等现象。
(1)表达时间的几个句型:一般用when或者是what time:
What time will the train leave?
由于时刻都是固定的,也可以用一般现在时代替一般将来时:
What time does the train leave?
(2)时间的表达方式:8:19(nineteen past eight),7:57(three to eight),在时间的中间也可以加上分的单词(minutes)
(3)had better +动词原型。意思是提要求,建议。但是上下级不能用这种方式,因为语气太重:
You had better give up smoking .
(4)sb leave sth +地点
I left my book in my classroom yesterday.
(5)may I have your name(addressage)?一般询问对方的年龄、名字等,不要习惯以前的问法,这样很不礼貌,而是要采访上面的问法。
以前的习惯是:how old are you? what's your name?
(6)修饰名词的代词次序:限-描-大-形---年---颜----籍----物--------类+名词:
this is a bridge.
This is a beautiful bridge
补充:从句的语序永远是陈述句。
主语从句结构:
1、It is +名词+从句
It is a fact that… 事实是……
It is good news that … ……是好消息
It is a question that … ……是个问题
It is common knowledge that … ……是常识
类似的名词还有:a pity;a wonder;a good thing; no wonder; surprise等。
例如:It is a mystery to me how it all happened.
这一切是怎么发生的是个谜。
It is common knowledge that the whale is not a fish.
鲸鱼不是鱼,这是常识。
It is no surprise that Bob should have won the game.
鲍勃会赢得这场比赛,这不足为奇。

2、It is +形容词+从句
It is necessary that … 有必要……
It is clear that … 很清楚……
It is likely that … 很可能……
It is important that … 重要的是……
类似的形容词还有:
strange; natural; obvious; true; good; wonderful; possible; unlikely; quite; unusual; certain; evident; worth-while; surprising; interesting; astonishing, etc.
例如:It is obvious that conductors and insulators are both important in industry.
很明显导体和绝缘体在工业中都很重要。
It is doubtful whether she will be able to come.
她是否能来令人怀疑。
It was really astonishing that he refused to talk to you .
他拒绝和你说话真是令人惊讶。
It is essential that he should be here by the weekend .
周末之前,他应该到这里是必要的。
It seems obvious that we can not go on like this.
很明显我们不能这样下去了。

3、It is +过去分词+从句
It is said that … 据说……
It is reported that … 据报道……
It has been proved that … 已证明……
It must be proved that… 必须指出……
类似的过去分词还有:known; estimated; expected; believed; thought; hoped; noted; discussed; required; decided; suggested; demanded; made clear; found out,etc.
例如:It is thought that he is the best player.
大家都认为他是最好的选手。
It is estimated that the vase is 2000 years old.
据估计这个花瓶有2000年的历史。
It is used to be thought that a new star must be due to a collision between two stars.
过去一直认为新星是由于两颗星星之间碰撞产生的。
It has not been made clear when the new road is to be opened to traffic.
还没弄清楚这条路将开始通车。

4、It +不及物动词+从句
It seems that … 好像是……
It happened that… 碰巧……
It follows that … 由此可见……
It has turned out that … 结果是……
类似的不及物动词还有:seem, appear, occur, follow, happen, turn out, etc.
例如:It turned out that nobody remembered the address.
结果是无人记得那个地址。
It now appears that they are in urgent need of help.
看起来他们急需帮助。
It does not matter if I missed my train, because there is another later.
没有赶上这趟火车没有关系,稍晚还有一趟。
It happened that I saw him yesterday.
碰巧我昨天看见他了。
当“及物动词 + 宾语”较短时,也可用这种结构。
例如:It shocked me that Peter did not tell anybody where he was.
让我吃惊的是彼得没有告诉任何人他在哪里。
It does not interest me whether you go or not.
我对你去不去不感兴趣。
It +某些固定结构+ 主语从句。
例如:It doesn’t make too much difference (It doesn’t make any difference / It doesn’t alter the situation),whether it rains or not .
下不下雨都没有多大关系。
It does not make any difference whether it rains or not .
下不下雨没什么分别。
It does not make the least difference to me what you do.
对我来说你做什么都无关紧要。
Is it of much consequence to you that Mr. Wang has failed to do it ? 王先生没有做成这件事对你有什么重要影响吗?