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初中三年级英语

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  • 句型转换
    按各小题的要求转换句型,保持句子原意,每个空格只准填一个单词。
    1. This is an American boy. He went to Tibet with my cousin last month. (合并成一个句子)
    This is the American boy ________ ________ my cousin went to Tibet last month.
    2. This question is difficult for me to answer in such a short time. (同义句转换)
    I ________ _________ difficult to answer this question in such a short time.
    3. My grandaunt has not eaten any meat for over fifty years. (同义句转换)
    My grandaunt has ________ a _________ for over fifty years.
    4. My new teacher told me not to feel so tense in class. (同义句转换)
    My new teacher told me to feel ________ ________ in class.
    5. Mike Tang is living in America. His ancestors came from China. (同义句转换)
    Mike Tang is an - ________ ________ in America.
    本题信息:2010年广东省竞赛题英语句型转换难度较难 来源:张雪
  • 本题答案
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本试题 “按各小题的要求转换句型,保持句子原意,每个空格只准填一个单词。1. This is an American boy. He went to Tibet with my cousin last month. (合并成一个句...” 主要考查您对

名词

关系代词

现在完成时

介词短语

it 的用法

定语从句

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。
  • 名词
  • 关系代词
  • 现在完成时
  • 介词短语
  • it 的用法
  • 定语从句
名词:
是词性的一种,也是实词的一种,是指待人、物、事、时、地、情感、概念等实体或抽象事物的词。
名词可以独立成句。在短语或句子中通常可以用代词来替代。

名词分类:
一、按意义分类
1.专有名词
表示具体的人,事物,地点,团体或机构的专有名称(第一个字母要大写)。
例:China(中国)、Asia(亚洲) Beijing(北京)、the People’s Republic of China(中华人民共和国)。
专有名词如果是含有普通名词的短语,则必须使用定冠词the。
如:the Great Wall(长城)。
姓氏名如果采用复数形式,则表示该姓氏一家人(复数含义)。
如:the Greens( 格林一家人)。
2.普通名词
表示某些人,某类事物,某种物质或抽象概念的名称。
例如:teacher 老师、tea 茶、 reform 改革。 
普通名词又可进一步分为五类:
①个体名词(Individual Nouns):表示单个的人和事物。
 (car 汽车 room 房间 fan 风扇photo 照片)
②集体名词(Collective Nouns):表示一群人或一些事物的名称。
  ( people 人们 family 家庭 army 军队 government政府 group 集团 )
③复合名词:两个或两个以上名词连在一起构成的名词
 (boy-friend男友 passer-by过路人 brother-in-law内兄)
④物质名词(Material Nouns):表示物质或不具备确定形状和大小的个体的物质。
  ( fire 火 steel 钢 air 空气 water 水 milk牛奶 )
⑤抽象名词(Abstract Nouns):表示动作,状态,品质或其他抽象概念。
  ( labour 劳动 health 健康 life 生活 friendship友情 patience耐力 )

二、按是否可数分类
名词又可分为可数名词(Countable Nouns)和不可数名词(Uncountable Nouns)
1、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。抽象名词,物质名词和专有名词一般是不可数名词
2、可数名词是指能以数目来计算,可以分成个体的人或东西;因此它有复数形式。


名词易混点举例:
一.有些名词既是可数名词,又是不可数名词,但意义有所不同。如:
work(工作) ——a work (著作);                     
 glass(玻璃)——a glass (玻璃杯);            
 aper(纸) ——a paper(报纸;文件;试卷)
tea(茶) ——a tea (一种茶)(表示种类);     
wood(木头) ——a wood (小树林);        
room(空间) ——a room (房间)

二.容易混淆的名词
1.work/job
work是不可数名词,有体力或脑力劳动的意思,又有作为职业概念的工作的意思。
job作为工作,其实有两层含义:一个是干活零工”;一个作为职业的”,是可数名词。 
job意思是a piece of work,指已做或要做、应做的具体的某种工作,实际含义是“职业”,
而work通常指抽象意义上的工作,是不可数名词,也可指“工作场所”。如:
I’m busy today, for I have a lot of work to do.

2. wish / hope
 wish之后可以跟含有动词不定式的复合宾语(wish sb. to do sth.),hope不可以这样用。例如:
I wish you to be happy.我希望你快乐。
 hopewish都可以跟从句。hope之后的从句的谓语动词用一般将来时或一般现在时,所表达的愿望可以实现;
wish
之后的从句的谓语动词用虚拟语气(以后学),表达的愿望无法实现。例如:
I hope you like the flowers.我希望你喜欢这些花。
I wish I were a bird.我希望我是一只小鸟。(虚拟语气)
hopewish都可以跟动词不定式(hope/wish to do sth.)wish比较正式,口气比较强烈;
而用hope所表达的愿望容易实现。例如:
I hope (wish) to go to college.我希望上大学。
wish可接双宾语表示祝愿、祝福,hope却没有这种用法。例如:
I wish you success.我祝愿你成功。

3.silly/stupid/foolish
三个词都含有的意思,但略有不同。
stupid所表达的程度最强,指智力、理解力和学习能力差;
silly
指头脑简单、傻头傻脑,使人觉得可笑,带有一定的感情色彩;
foolish
是普通用语,尤其是在口语中广泛使用。如:
He is stupid in learning math.
他学数学很笨。
Stop asking such silly questions.
别再问这样傻的问题了。
You are foolish to throw away such a good chance.
你真蠢,丢掉这么好的一个机会。

4.instead/instead of

instead/instead of

instead是副词,一般放在句首或句末。
instead of 是介词短语,表示代替, 含有对比的意思,其后常跟名词、代词或v-ing形式。如:

Jack didn’t study law. Instead, he decided to become an actor.

杰克没有学法律,而是决定作一名演员。

If you can’t go to the meeting, I can go instead.

如果你不去开会, 我可以(代替你)去。

Could I have tuna instead of ham?

我能否要金枪鱼而不是火腿?

Miss Wang is ill. I’ll teach you instead of her.

王老师病了,我代替她给你们上课。

We walked down the stairs instead of taking the elevator.

我们走着下楼梯而没有乘电梯。


5.
frightened/afraid/terrible

frightened/afraid/terrible

frightened是由过去分词转化的形容词,常指突如其来的震惊,可用very修饰,在句中作定语、表语、宾语补足语。

afraid只能做表语,多用于习惯经常地惧怕某事物, 泛指一种恐惧心理”;
后接名词、代词、动名词等时,用介词of;接动词时,用带to的不定式;接从句用连词that (可省略)

terrible指极端的恐怖,令人痛苦或不知所措。


6.
learn/study

learn/study

二者都作学、学习,有时可以互换。如:

When did you begin to study/learn English?

你是什么时候开始学习英语的?

study侧重学习的过程;learn侧重学习的结果,常译作学到、学会 :

He studied hard and at last learned the language.

他努力学习,终于学会了这门语言。

study用于较高深或周密的研究;
learn多用于初级阶段的学习或带有模仿性的操作技艺等。如:

He is studying the math problem.

他正在研究这个数学问题。

He learns English on the radio.

他通过广播学英语。

The baby is learning to speak.

这个婴儿正在学说话。


7.
there be/have/own

there be/have/own

there be表示某处(或某时)""(某人或某物),表示客观存在之

have是常用词,表示所属关系,所有

own指合法地拥有某物,强调具有法律上的所有权。


8.
answer/reply

answer/reply

这两个词都可作回答,但用法有所区别。
reply为正式用语,多指经过考虑的、有针对性的、详细的回答,常用作不及物动词,和介词to连用,其宾语为名词或代词,这时可以与answer互换;
answer
既可作及物动词,又可作不及物动词,常指口头或书面的回答,是一般用语。如:

The old man smiled before he replied to my question.

老人在回答我的问题前笑了笑。

I cannot answer you now. 我现在不能回答你。

How shall I answer? 我该怎样回答?

值得注意的是,answer可引申为应答之类的意义,这时不能用reply来代替。如:

answer the door  (门铃响了)去开门

answer the telephone  接电话


名词的语法功能: 
名词在句中作主语,宾语,介词宾语,宾语补足语,表语以及名词短语作状语。
1.主语:The bagis in the desk.书包在桌子里边。
2.宾语:I washed my clothes yesterday. 昨天我洗了我的衣服。
3.表语:This is a good book. 这是一本好书。
4.宾语补足语We selected him our monitor.我们选他为我们的班长。
5.介词宾语Mary lives with her parents.玛丽和她的父母住在一起。
6.定语:She is a Partymember. 她是一位党员。

名词口诀:
一、人和事物各有名,万千名目可辨清。表示名称即名词,具体抽象有不同。
  时间空间和地点,方向位置有专称。主宾定表都可作,名词具有多功能。
二、可数名词不可分,若要分离变性质。不可数名词可分离,一分再分仍原物。

英语名词特殊用法:
1.family指“家庭”时,强调全体;指“家里人”时强调个体,与住房无关
home指“家”,表示同一家庭共同生活的地方,具有感情色彩
Kate has left home for school.可作副词也可作名词,意思是“在家”
house指“住宅”、“住房”The Greens live in a big house.

2.man总称“人”、“人类”,用单数
people泛指“人们”,表示复数概念:People often work in the day.
指“人”的个体,但只表示复数概念:There are five people in my family.
前面加定冠词指“人民”,表示复数概念:Let’s work for the people.
指“民族”时,有单、复数之分:The Chinese people is a hardworking people.
person强调“人”的个体,有单、复数之分:There are five persons in my family.

3.police总称“警察”,表示复数概念:
policeman强调“警察”的个体,有单、复数之分:My father is a policeman.

4.universe指“宇宙万物”,强调物质概念:
When we talk about the universe,we mean the earth, the sun,the moon and many other stars.
space指“太空”、“宇宙空间”,强调空间概念:
Many countries have sent up the satellites into space.
“空间”、“余地”、“空地”:There is no space on the bus.

5.不同国家的人的单复数:

名称

总称(谓语用复数)

一个人

两个人

中国人

the Chinese 

a Chinese

two Chinese

瑞士人

the Swiss

a Swiss 

two Swiss

澳大利亚人

the Australians

 an Australian 

two Australians

俄国人

the Russians 

a Russian 

two Russians

意大利人 

the Italians 

an Italian 

two Italians

希腊人

the Greek 

 a Greek

 two Greeks

法国人

the French 

a Frenchman 

two Frenchmen

印度人

 the Indians 

an Indian 

two Indians

加拿大人

the Canadians 

 a Canadian 

two Canadians

德国人

 the Germans

 a German 

two Germans

英国人

 the English 

an Englishman 

two Englishmen

瑞典人

 the Swedish 

a Swede 

two Swedes

日本人

 the Japanese 

a Japanese 

two Japanese

美国人

the Americans

 a American 

two Americans


关系代词:
用来引导定语从句。它代表先行词,同时在从句中作一定的句子成分。
关系代词有主格,宾格和属格之分,并有指人与指物之分,它在先行词和定语之间起纽带作用。
主要的关系代词有who,whom,whose,which和that。
①who指人,在定语从句中作主语或宾语;
whom指人,在定语从句中作宾语;
whose在定语 从句中作定语,其先行词既可以是人也可以是物。
例如:The teacher who/whom you want to see has come.
②which指物,在定语从句中作主语或宾语。 
例如:Here is the coat which will be made to you.
③that多指物,有时也指人,在定语从句中作主语或宾语。
例如:I have eaten bread that/which he gave to me.

关系代词的基本用法:
(1)引导定语从句
关系代词代表先行词,同时在从句中作一定的句子成分,例如:
The girl whom I spoke to is my cousin. 跟我讲话的姑娘是我表妹。
(该句中whom既代表先行词the girl,又在从句中作介词to的宾语。)
This is the pencil whose point is broken.这就是那个折了尖的铅笔。
(whose 指物,在限定性定语从句中作定语)
He came back for the book which he had forgotten.他重新回来都忘记了他的那本书。
(which指物,在限定性定语从句中作宾语,可以省略)
(2)which为其先行词。例如:
He said he saw me there, which was a lie.他说在那儿看到了我,纯属谎言。
(3)其他用法
关系代词that在从句中作宾语或表语时可省略, 例如:
I've forgotten much of the Latin I once knew.我过去懂拉丁语,现在大都忘了。
He's changed. He's not the man he was.他变化很大,已不是过去的他了。
注释:关系代词在从句中作宾语时可省略,that在从句中作表语时也可省略。
非限定性定语从句中,不能用that作关系代词。


关系代词的语法注意:
1.常用that 不用which的情况:
①先行词为all, anything, everything, nothing, something等时。
I will do all (that) I can to help you.
②先行词被序数词、形容词最高级或the only, the very等所修饰时。
He was the only person that joined the army in his village that year.
③先行词既有人,又有物时
They talked about the people and the things (that)they remembered in the school.
④当主句是以who 或which开头的疑问句时, 定语从句用that 引导, 以避免重复。
Who is the boy that was here just now?
2. 若被修饰的名词充当从句介词宾语时
介词可提前于引导词之前,此时的引导词只能用whom 或which.
The pencil with which he was writing broke.
3. 当先行词为way时
其后的定语从句用in which或 that引导,也可不用引导词。
I don’t like the way (in which/that) he talks to me.

used to/be used to的分别:
①used to + do:"过去常常"表示过去习惯性的动作或状态,但如今已不存在。
Mother used not to be so forgetful.
②be used to + doing: 对……已感到习惯,或"习惯于",to是介词,后需加名词或动名词。
Scarf is used to taking a walk.(现在习惯于散步)
③used to 的用法 (否定式简写为usedn't) 过去经常,以前常常
This used to be a shabby house. (此房年久失修)
used to,would这两个词语都可以表示过去常做某事,有时可以换用。
used to do 强调过去习惯性的行为或状态,但是现在没有这种行为或状态了。因此,这个短语的内涵是今昔对比。


关系代词的用法:
一、不用that的情况
在引导非限定性定语从句时 (错)The tree, that is four hundred years old, is very famous here.
介词后不能用We depend on the land from which we get our food.

二、只能用that作为定语从句的关系代词的情况
a.在there be 句型中,只用that,不用which。
b.在不定代词,如:anything, nothing, the one, all, much, few, any, little等作先行词时,只用that,不用which。
c.先行词有the only, the very.(恰恰,正好).any. few. little. no. all 修饰时,只用that。
d.先行词为序数词、数词、形容词最高级时,只用that。
e.先行词既有人,又有物时。
Finally, the thief handed everything that he had stolen to the police.那贼最终把偷的全部东西交给了警察。

三、不能用关系代词Which 的几种情况
1.当先行词为all, little, much, few, everything, none 等不定代词时关系代词用that而不用which.
There are few books that you can read in this book store.
2.当先行词既有人又有物时,关系代词用that, 不用which.
He asked about the factories and workers that he had visited.
3.当先行词有形容词最高级修饰时,关系代词用that, 而不用which.
Guilin is one of the most beautiful cities that I have ever visited.
4.当先行词有序数词修饰时,关系代词用that, 不用which.
The first sight that was caught at the Great Wall has made a lasting impression on him.
5.当先行词被the only, the very, the same, the right等修饰时,关系代词用that,不用which.
It is the only book that he bought himself.
6.当先行词被all, every, any, much, little, few, no等修饰时,关系代词用that,不用which.
There is no clothes that fit you here.
7.当主句是以which开头的特殊问句时,定语从句关系代词一般用that而不用which.
Which of the books that had pictures was worth reading?
8.在强调句型" It is ... that ..." 中,只用that,不用which.
It is in this room that he was born twenty years ago.
9.在" such (the same) ... as ..." 句型中,关系代词要用as, 而不用which.
We need such materials as (not which) can bear high temperature.
10.表示" 正如... 那样 "," 正象..." 之意时,用as, 不用which.
Mary was late again, as had been expected.
11.As 引导的定语从句可以放在主句前面,也可以放在主句后面或主句中间,而由 which引导的定语从句只能放在主句后面。
As we all know, oceans cover more than 70% of the earth.

关系代词可以省略的情况:
1.关系代词which,whom,who,that在定语从句中作宾语时可以省略。
Here is the man (who/that/whom)you're been looking for.
2.当that在从句中作补语时可以省略。
She is all (that) a teacher should be.
3.在there be 结构中出现定语从句,或在定语从句中出现there be 时,用作主语的关系代词也可省略。
This is the best dictionary (that) there is in the library.
4.状语的省略
(1)当先行词是reason,而且定语从句中作原因状语时,关系代词可用why,that,也可以省略。
That is the reason (why) I did it.
(2)当先行词是way,且在定语从句中作方式状语时,关系代词可用in which,that,也可以省略。
I don't know the way that/ which leads to the top of the mountains.
(3)当先行词是time时,关系代词可用when,that 或省略。
I don't know the exact time (when/that) the sports meet will take place.
注意:关系代词作宾语有时也不能省略。

关系代词不能省略情况:
1.在介词+whom与介词+which中,whom,which不能省略。
That is the headmaster with whom my father was talking just now.
2.在非限制性定语从句中,作宾语的关系代词也不能省略。
The elephant is like a spear,as anybody can see.
3.在the same ...as,such...as,as...as,the same...that中,as,that即使作宾语,也不能省略I have bought the same bicycle as you have (bought). (指同类用as)
This is the same book that I read the day before yesterday. (that指同一个)
4.当由and,but,or等连词连接两个或两个以上的定语从句修饰一个先行词时,第一个关系代词可省,但第二,第三个不可省略。
This is the book (which) I read yesterday and which I find very interesting.


关系代词格式:
关系代词有主格,宾格和属格之分,并有指人与指物之分。that的用法最广,that可指人也可指物。
见表:

 

限定性
指人

非限定性
指物

限定性
指人或指物

主格

who

which

that

宾格

whom

that

that

属格

whose

of  which
whose

of  which
whose


特殊关系代词的用法:
关系词通常是用来引导定语从句的,但as,than和but这三个词却与which, who, that, where, when和why等典型的关系词不同。
三者本身具有常见的字面意义,前面有名词作先行词,但后面的定语从句却不像典型的定语从句。
这些既像连接词又像关系词的词,我们就姑且称它们为准关系词。
一、 as作为准关系代词出现在the same ... as, such ... as, 和as ... as等结构中。
这时, as前面通常要有名词;
as后面的从句意义上不像是通常的定语从句;
as需要在从句中充当一定的句子成分。
1. the same ... as
        1) as在从句中作主语
  She is the same person as came here last Sunday. 她就是上星期天来这儿的那个人。
  2) as在从句中作宾语
  This is the same watch as I lost while I was doing the sightseeing in Shanghai three months ago. 这块表跟我三个月前在上海观光时丢失的那块一样。
  3) as在从句中作be动词的表语
  China is not the same country as it used to be. 中国已今非昔比。
  4) as在从句中作行为方式状语
  You should learn to do housework in the same way as your mother does it. 你应该学会像你母亲那样做家务活。
2. such ... as
  1) as在从句中作主语
  Let children read such books as tend to make them better and brighter. 让孩子看那些容易让他们变得更好更聪明的书。
  2) as在从句中作宾语
  This is not such an interesting book as you just talked about. 这不是你们刚才谈到的那种有趣的书。
  3) as在从句中作be动词的表语
  Such a bad man as he is will be punished. 像他这样的坏人一定会受到惩罚。
3. as ... as
  1) 第二个as在从句中作主语
  He has as much money as is required. 他要多少钱就有多少钱。
  2) 第二个as在从句中作宾语
  I have as many friends as you (do). 我的朋友和你的朋友一样多。
  3) 第二个as在从句中作be动词的表语
  As is known to all, Taiwan is one of the Chinese provinces。众所周知,台湾是中国的一个省。

二、than作为准关系词 出现在more ... than, less ... than, fewer ... than等结构中。这时, than前面要有名词; than本身有比较意义,而且需要在从句中充当一定的句子成分。
  1. than在从句中作主语
  Take it easy, I have more money than is needed. 放心,我的钱比所需要的还要多。
  2. than在从句中作宾语
  I have more/fewer books than you (do). 我的书比你的多/少。
  3. than在从句中作be动词的表语
  He is a better boy than you (are). 他是一个比你更好的男孩。
三、but作为准关系词 本身含有否定意义,它前面的主句还有另一个否定意义。这时but在意义上相当于“who ... not ...”或“which/that ... not ...”。
  1.定语从句中有be动词,并将其改为含but的复合句时, be动词后面不能再有not
  There is no one who is not conccrned about his future. (= There is no one but is concerned about his future.) 没有人不关心自己的未来?
  2. 定语从句中有can, will, shall, must, may, should, ought to等助动词或情态动词,在将其改为含but的复合句时,这些助动词或情态动词后面不能再有not
  There is nothing that she can’t do. (= There is nothing but she can do.) 没有她做不到的事?
  3. 定语从句中有助动词do, does, did, 在将其改为含but的复合句时,应去掉do, does, did, 还原其后动词的时态及人称变化
  There is no one who doesn’t wish to make great achievements. (= There is no one but wishes to make great achievements.) 谁都希望自己将来能有所成就。
四、which的先行词:关系代词which的先行词可以是一个句子
  He said he saw me there, which was a lie。他说在那儿看到了我,纯属谎言。
说明:关系代词that在从句中作宾语或表语时可省略
  I've forgotten much of the Latin I once knew。 我过去懂拉丁语,现在大都忘了。  


现在完成时:
过去发生并且已经完成的动作对现在造成影响或后果,过去某一时间开始并一直持续到现在的动作或状态。
基本结构:主语+have/has+动词的过去分词
句式:
1. 否定句式:现在完成时的否定句式是“haven't (hasn't)+过去分词...”。
如:I have not seen the movie yet. 我还没看这部电影。
2. 一般疑问句:Have(Has)+主语+过去分词...? 如:
—Have you finished the work?你已经做完这项工作了吗?
—Yes, I have. 是的,我已经做完了。(No, I haven't. 不,我还没有做完。)
3. 特殊疑问句:特殊疑问词+have(has)+主语+过去分词...?如:
How many times have you been to the Great Wall?你去过长城几次?
提示:肯定句中有some, already时,改为否定句或疑问句时通常要分别改为any, yet。如:
I have already finished my homework. 我已经完成了我的作业。
→ I haven't finished my homework yet. (否定句)
→ Have you finished your homework yet? (一般疑问句)
现在完成时常见两种句型:
①for短语
②It is+一段时间+ since从句
现在完成时特点:
1. 非持续性动词的完成时的肯定式不能与时间段连用,若要用时间段状语,则应换成相应的持续性动词或状态动词。
例如:
He has left.
He has been away for an hour.
2. have/has been to 表示曾经去过某地,但现在不在那;have/has gone to表示现在已去某地,现在不在这。
例如:
He has been to Canada, but now he is working in our company.
Mr. Li in not at home. He has gone to Shanghai.
3. 完成时的肯定式常用already,而否定式和疑问式常用yet,但若already用于疑问句时,表示一种出乎意外的惊讶。
例如:Have you read it already?
现在完成时和一般过去时区别:
现在完成时和一般过去时都表示在过去完成的动作。
但现在完成时强调的是这一动作与现在的关系。如对现在产生的结果或影响等,
而一般过去时只表示动作在过去某一时刻发生,不表示和现在的关系。
比较:
I have lost my new book.  我把新书丢了。(现在还未找到)
I lost my new book yesterday. 我昨天把新书丢了。(昨天丢的,现在找到与否没说明)

have been(to)与have gone( to)的区别:
have been(to)表示“去过某地(现在已经回来了)”,可用于各人称;
have gone(to)表示“去某地了(说话时某人不在当地)”,常用于第三人称,
前者可与once ,never,several times等连用,后者则不能。
如:
They have been to Beijing twice.他们去过北京两次。
He has gone to Beijing .  他去北京了。

现在完成时注意事项:
1.如单纯表示一段时间,或强调一段时间,虽有since一词,也不必用完成时。如:
It is two years since his father died. =His father has been dead for two years.他父亲去世已有三年了。

2.终止性动词现在完成时的否定式,已变成一种可以延续的状态,因此可以和表示一段时间的状语连用。如:
I haven't left here since 1997.自从1997年以来,我一直没有离开过这儿。

3..现在完成时不能单独与准确时间连用,(如表示过去的时间状语)
如:yesterday(morning、afternoon),last(morning、afternoon)等,除非与for,since连用.

4.不能与when连用.

现在完成时的用法:
1.表示动作发生在过去某个不确定的时间,但对现在留下了某种影响和结果。常被just、already、yet 等副词修饰。如:
-Have you had lunch yet?    
-Yes,I have. I've just had it.
2.表示从过去某一时刻开始一直持续到现在的动作或状态。这个动作可能刚停止,可能仍然在进行。
常带有for和since等表示一段时间的状语。如:
He has taught here since 1981
他自1981年就在这儿教书。(可能还要继续教)
I have't seen her for four years.
我有四年没见到她了。
3.表示说话前发生过一次或多次的动作,现在成为一种经验,一般译为汉语“过”。
常与twice,ever,never,three times等时间状语。 如:
I have been to Beijing twice.我去过北京

4. 现在完成时还往往可以同包括现在时间在内的时间状语连用,如:
now,up to these few days/weeks/months/years,this morning/week/month/year,just,today,up to present,so far等:
Peter has written six papers so far.
Man has now learned to release energy from the nucleus of the atom.
There has been too much rain in San Francisco this year.
The friendly relations and cooperation between our two countries have been enhanced in the past few years.
Up to the present everything has been successful.

5.现在完成时往往同表示不确定的过去时间状语连用,如:
already(肯定),yet(否定,疑问),just,before,recently,still,lately,never等:
He has already obtained a scholarship.
I haven't seen much of him recently (lately).
We have seen that film before.
Have they found the missing child yet?

6.现在完成时的"完成用法"
现在完成时的"完成用法"指的是动作发生在过去某一时刻并已结束,但该动作对现在产生了影响,与现在情况具有因果关系。
例如:
He has turned off the light.他已把灯关了。(动作结束于过去,但说明的是现在的情况--灯现在不亮了。)
现在完成时"完成用法"的特点是动作不延续,因此:
该时态只能与表示不定的过去时间状语(如:already,yet,before,recently等)、频度时间状语(如:never,ever,once等)、包括现在时刻在内的时间状语(如:this morning / month /year...,today等)连用。
例如:Have you found your pen yet?你已找到你的钢笔了吗?
7.现在完成时的"未完成用法"
现在完成时的"未完成用法"指的是动作开始于过去某一时刻,一直延续到现在,或可能还要继续下去。
例如:
He has lived here since 1978.自从1978年以来,他一直住在这儿。
(动作起始于1978年,一直住到现在,可能还要继续住下去。)
I have been in the army for more than 5 years.我在部队已经呆了五年多了。
(动作开始于5年前,一直延续至今,有可能还要继续下去。)
此种用法的句中常需一个表示一段时间的状语(由since或for引导),或表示与现在时刻相连的时间状语(如:up to now,so far)等。
例如:
I have heard nothing from him up to now.到目前为止我没有他的任何消息。
注意:现在完成时的未完成用法只适用于延续性动词,不可用于终止性动词,即瞬间完成或延续时间很短的动词。
如:come,go,arrive,leave,join,become,die等。
8.一段时间+has passed+since从句
主语+have / has been+since短语
例如:He has been in the League for three years.
或It is three years since he joined the League. 他入团已三年了  
9. 现在完成时常和短语 "up to now /till now","so far" (意思是从过去某一确定的时间一直延续到现在)连用。  
Up to/till now he's read many story books. 至今他已读过好多故事书。
I've been to New York three times so far. 至今我已到纽约去过三次。
has gone (to),has been (to),has been (in) 的区别
has gone to:去了没回
has been to :去过
has been in:呆了很久


介词短语:
介词是一种用来表示词与词, 词与句之间的关系的词。在句中不能单独作句子成分。
介词后面一般有名词代词或相当于名词的其他词类,短语或从句作它的宾语。介词与它的宾语构成介词词组,在句中作状语,表语,补语,定语或介词宾语。例如:at ,in, on, to
介词短语在句中可以作状语,定语,表语,补足语等。
1. 作表语
   例如:It was in 2005 in Beijing.
2. 作宾语补足语
   例如:He found his dog outside the station.
3. 作后置定语
   例如:I even store them in boxes under my bed.
4. 作状语
   例如:You are supposed to put your bread on your plate.
常见介词用法:
1)at,in,on在……范围
at (1)表示在小地方; (2)表示“在……附近,旁边”
in (1)表示 在大地方; (2)表示“在…范围之内”。
on 表示毗邻,接壤
to 表示在……范围外,不强调是否接壤
He arrived at the station at ten.
He is sitting at the desk.
He arrived in Shanghai yesterday.
Jiangsu lies in the east of China.
Russia live on the north of China.
Fujian is to the south of Jiangsu Province.

2)above, over, on 在……上
above 指在……上方,不强调是否垂直,与 below相对;
over指垂直的上方,与under相对,但over与物体有一定的空间,不直接接触。
on表示某物体上面并与之接触。
The bird is flying above my head.
There is a bridge over the river.
He put his watch on the desk.

3)below, under 在……下面
under表示在…正下方
below表示在……下,不一定在正下方
There is a cat under the table.
Please write your name below the line.

介词短语组织形式及实例:
一、介词+名词形式
第一组
by accident 偶然
on account of 因为,由于
in addition 另外
in addition to 除 …… 之外
in the air 在流行中,在传播中
on (the/an) average 平均,一般来说
on the basis of 根据,在 …… 的基础上
at (the) best 充其量,至多
for the better 好转,改善
on board 在船 ( 车、飞机 ) 上
out of breath 喘不过气来
on business 因公,因事
in any case 无论如何,总之
in case of 假使,万一
in case 假如,以防 ( 万一 ) 免得
in no case 决不
第二组
by chance 偶然,碰巧
in charge (of) 负责,主管
(a) round the clock 昼夜不停地
in common 共用,共有,共同
in conclusion 最后,总之
on condition that 在 …… 条件下
in confidence 信任
in connection with/to 关于
in consequence 因此,结果
in consequence of 由于 …… 的缘故
on the contrary 反之,正相反
in contrast with/to 与 …… 成对照
out of control 失去控制
under control 被控制住
at all costs 不惜任何代价
at the cost of 以 …… 为代价
第三组
in the course of 在 …… 过程中,在 …… 期间
of course 当然,自然,无疑
in danger 在危险中,垂危
out of danger 脱离危险
out of date 过期 ( 时 ) 的
up to date 时新的
in debt 欠债
in detail 详细地
in difficulties 处境困难
in the distance 在远处
off duty 下班
on duty 值班,上班
on earth 究竟,到底
at all events 无论如何
in any event 无论如何
in effect 有效;实际上
第四组
in the event of 万一,如果发生
for example 例如
with the exception of 除 …… 之外
in the face of 面对,不顾,即使
in fact 其实,实际上
on fire 烧着
on foot 步行
in force 有效;实施中
in favo(u)r of 有利于,赞成,支持 in front of 在 …… 面前
in (the) future 今后,将来
on guard 警惕,防范
in general 通常,大体上
in half 成两半
at hand 在手边,在附近
from tip to toe 彻头彻尾,完全
by hand 用手 hand down to 往下传,传给 ( 后代 )
第五组
hand in hand 手拉手,携手
in hand 在掌握中,在控制中
on hand 在手边,临近
on (the) one hand... 一方面 …… ,
on the other hand... 另一方面 ……
at heart 在内心;实质上
by heart 牢记,凭记忆
at home 在家,在国内;自在,自如
in honor of 以纪念,向 …… 表示敬意
on one's honor 以名誉担保
in a hurry 匆忙地,立即
for instance 例如,举例说
at intervals 不时,时时
at last 最终,终于
at least 至少,最低限度
in the least 一点,丝毫
第六组
at length 终于,最后;详细地
in the light of 按照,根据
in line 成一直线,排成一行
in line with 与 …… 一致,按照
at a loss 困惑,不知所措
as a matter of fact 其实,事实上
by all means 无论如何,必定 by means of 借助于,用
by no means 决不
in memory of 纪念
at the mercy of 在 …… 支配下
by mistake 错误地
for a moment 片刻,一会儿
in a moment 立刻,马上
第七组
in nature 本质上 on occasion 有时,不时
in order 秩序井然,整齐
in group to 以便,为了
in group that 以便
out of order 发生故障,失调
on one's own 独自地,独立地
in particular 特别地,尤其,详细地
in the past 在过去,以往
in person 亲自
in place 在适当的位置
in place of 代替
in the first place 起初,首先
in the last place 最后
out of place 不得其所的,不适当的
on the point 即将 …… 的时候
第八组 to the point 切中要害,切题
in practice 在实际中,实际上
out of practice 久不练习
in proportion to( 与 ……) 成比例的
in public 公开地,当众
for (the) purpose of 为了
on purpose 故意,有意
with the purpose of 为了
in question 正在考虑
at random 随意地,任意地
at any rate 无论如何,至少
by reason of 由于
as regards 关于,至于
with/in regard to 对于,就 …… 而论
第九组
in/with relation to 关系到
with respect to 关于
as a result 结果,因此
as a result of 由于 …… 的结果
in return 作为报答,作为回报
on the road 在旅途中
as a rule 规章,规则;通常,照例
in the long run 最终,从长远观点看
for the sake of 为了 …… 起见
on sale 出售;贱卖
on a large scale 大规模地
on a small scale 小规模地
in secret 秘密地,私下地
in a sense 从某种意义上说
in shape 处于良好状态
on the side 作为兼职,额外
第十组
at first sight 乍一看,初看起来
in sight 被看到,在望
out of sight 看不见,在视野之外
in spite of 不管,不顾;尽管,虽然
on the spot 当场,在现场
in step 同步,合拍
out of step 步调不一致,不协调
in stock 现有,备有
in sum 总而言之
in tears 流着泪,含泪,哭
in terms of 依据,按照;用 …… 措词
for one thing 首先,一则
on the second thoughts 经重新考虑,一转念
at a time 每次,一次
at no time 从不,决不
at one time 同时,曾经,从前曾

二、动词+名词形式
第一组
have/gain access to 可以获得
take...into account 考虑
gain/have an advantage over 胜过,优于
pay the way for 为 …… 铺平道路
take advantage of 利用,趁 …… 之机
pay attention to 注意
do/try one's best 尽力,努力
get the best of 胜过
make the best of 充分利用,妥善处理
get the better of 打败,致胜
catch one's breath 屏息,歇口气
take care 小心,当心
take care of 照顾,照料
take a chance 冒险一试
take charge of 担任,负责
keep company with 与 …… 交往,与 ……
take delight in 以 …… 为乐
with delight 欣然,乐意地
第二组
make a/the difference 有影响,很重要
carry/bring into effect 使生效,使起作用
put into effect 实行,生效
come/go into effect 生效,实施
take effect 生效,起作用
catch one's eye 引人注目
keep an eye on 留意,照看
make a face 做鬼脸
find fault 埋怨,挑剔
catch fire 着火
come/go into force 生效,实施
make friends 交朋友,友好相处
be friends with 对 …… 友好,与 …… 交上朋友
make fun of 取笑,嘲弄
keep one's head 保持镇静
lost one's head 不知所措
第三组
lose heart 丧失勇气,失去信心
get/learn by heart 记住,背诵
get hold of 抓住,掌握
keep house 管理家务,做家务
throw/cast light on 使明白,阐明
bear/keep in mind 记住
have in mind 记住,考虑到,想到
make up one's mind 下决心
come/go into operation 使投入生产,使运转
put in order 整理,检修
keep/hold pace with 跟上,与 …… 同步
play a part 起作用
take place 发生,进行
take the place of 代替
come to the point 说到要点,扼要地说
bring/carry into practice 实施,实行
第四组
make progress 进步,进展
give rise to 引起,使发生
make sense 讲得通,有意义
catch the sight of 发现,突然看见
(go) on the stage 当演员
take one's time 不急不忙,从容进行
keep in touch 保持联系
keep track 通晓事态,注意动向
lose track 失去联系
make use of 利用
put to use 使用,利用
give way 让路,让步
lead the way 带路,引路
make one's way 前进,进行
make way 让路,开路
keep one's word 遵守诺言
第五组
act on 作用
appeal to 呼吁,要求
attempt at 企图,努力
attitude to/towards 态度,看法
a great/good deal of 大量 ( 的 ) ,许多 ( 的 )
influence on 影响
interference in 干涉
interference with 妨碍,打扰
第六组
introduce to 介绍
a lot (of) 许多 ( 的 ) ,大量 ( 的 )
lots of 大量,很多
fall in love with 相爱,爱上
a matter of( 关于 ……) 的问题
a number of 若干,许多
reply to 回答,答复
a series of 一系列,一连串
英语常考词语固定搭配(四)
第七组
trolley bus 电车
I. D. card 身份证
credit card 信用卡
no doubt 无疑,必定
next door 隔壁
out of doors 在户外
face to face 面对面地
as matter of fact 实际情况,真相
a few 有些,几个
quite a few 还不少,有相当数目的
a little 一点,稍微,一些,少许
little by little 逐渐地
quite a little 相当多,不少
no matter 无论
the moment (that) 一 …… 就
no more 不再
第八组
fair play 公平竞赛;公平对待
in demand 有需要,销路好
rest room 厕所,盥洗室
primary school 小学
side by side 肩并肩,一个挨一个
heart and soul 全心全意
step by step 逐步
ahead of time 提前
all the time 一直,始终
once upon a time 从前
once in a while 偶尔,有时
no wonder 难怪,怪不得
word for word 逐字地
decline with thanks 婉言谢绝

三、介词+介词形式
第一组
account for 说明 ( 原因等 )
aim at 瞄准,针对
allow for 考虑到
appeal to 呼吁,要求
arrive at 达成,得出
ask after 询问,问候
ask for 请求,要求
attach to 附属于,隶属于
begin with 从开始
break into 闯入
break off 断绝,结束
break through 突破
break up 中止,结束;打碎,折断
bring about 带来,造成
bring down 打倒,挫伤;降低
bring forth 产生,提上
第二组
bring forward 提出
bring out 使出现;公布;出版
bring up 教育,培养,使成长
build up 积累;堵塞;树立,逐步建立;增进;锻炼
call for 邀请;要求;需求
call forth 唤起,引起;振作起,鼓起
call off 放弃,取消
catch at 抓住 ( 东西 )
call on/upon 访问,拜访;号召,呼吁
call up 召集,动员;打电话
care for 照管,关心;喜欢,意欲
carry off 夺去
carry on 继续下去;从事,经营
carry out 贯彻,执行;实现
come to 总计,达到;苏醒,复原
count on 依靠;期待,指望
count up 把 …… 相加
第三组
cover up 掩饰,掩盖
cut across 走捷径,抄近路
deal with 处理,对付,安排
do without 没有 …… 也行
fill in/out 填充,填写
get at 得到,接近;意思是
get into 进入,陷入
go after 追求
go into 进入;研究,调查
go for 竭力想取得;喜爱;支持,拥护
go through 经历,经受;详细检查
go with 伴随,与 …… 协调
go without 没有 …… 也行
improve on 改进
keep to 保持,坚持
lie in 在于
live up to 不辜负
第四组
live on/by 靠 …… 生活,以 …… 为食
live through 度过,经受过
look after 照管,照料
look at 看望,注视
look for 寻找,寻求
look into 调查,观察,过问;窥视
look over 检查,查看,调查
look through 仔细查看,浏览,温习
make for 走向,驶向;有助于
occur to 被想到,被想起
play with 以 …… 为消遣,玩弄
refer to 参考,查阅,涉及,提到
run for 竞选
run into 撞上,偶然碰见
see to 注意,负责,照料,修理
send for 派人去请,召唤;索取
第五组
send in 呈报,递交,送来
serve as 作为,用作
set aside 挑出,拨出,留出;拒绝
sit for 参加
stand by 支持,帮助;袖手旁观
stand for 代替,代表,意味着
stand against 反抗,抵抗
stick to 坚持,忠于,信守
take after 与 …… 相像
take for 把 …… 认为是,把 …… 看成是
take in 接受,吸收;了解,理解
take to 喜欢,亲近
touch on 关系到,涉及
turn into 变成
turn to 变成;求助于,借助于
turn off 关上;出产;解雇

四、动词+介词形式
第一组
break down 损坏,分解,瓦解
break in 闯入;打断,插嘴
break out 逃出;突然发生,爆发
bring to 使恢复知觉
burn out 烧掉
burn up 烧起来,旺起来;烧完
catch on 理解,明白
check in 办理登记手续
check out 结账后离开;检验,核查
check up (on) 校对,检查,检验
cheer up 使高兴,使振奋
clear away 扫除,收拾
clear up 收拾;澄清;放晴
make it clear that 弄清楚
come off 实现,成功,奏效
come on 请,来吧,快点;开始,出场,上演
come out 出版;出现,显露;结果是
第二组
come round (around) 来访,前来;苏醒,复原
come through 经历,脱险
come up 走近,上来;发生,被提出
cross out 删去,取消
cut back 削减,减少
cut down 削减,降低
cut in( 汽车 ) 抢道;插嘴,打断
cut off 切断;删去;停止
cut out 删除
cut short 突然停止
die down 渐渐消失,平息
die out 消失,灭绝
draw in( 火车、汽车 ) 到站
draw up 写上,画上;草拟;停住
dress up 穿上盛装,打扮得很漂亮
drop by/in 顺便来访
dry out 干透,使干
dry up 干涸,枯竭
第三组
drop off 减弱,减少
drop out 退出,离队
fall behind 落后
fall out 争吵;结果是
fall through 落空,失败
feed in 输入
find out 查明
get across 解释清楚,使人了解
get around/round 走动,旅行; ( 消息 ) 传开
get away 逃脱,离开
get by 通过,经过
get down 从 …… 下来;写下
get in 进入;收获,收集
get off 从 …… 下来;离开,动身,开始
get over 克服; ( 从病中 ) 恢复过来
get through 结束,完成;接通电话
have got to (do) 不得不,必须
第四组
get together 集合,聚集
get up 起床;增加,增强
give away 泄露;分送
give back 送还,恢复
give in 交上;投降,屈服
give off 放出,释放
give out 分发,放出
give up 停止,放弃
go ahead 开始,前进;领先
go by 过去
go down 下降,降低;被载入,传下去
go off 爆炸,发射;动身,离开
go out 外出;熄灭
go over 检查,审查;复习,重温
go round/around 足够分配
go under 下沉,沉没;失败;破产
go through 通过,审查,完成
第五组
go up 上升,增加;建起
hand down 流传下来,传给,往下传
hand in 交上,递交
hand on 传下来,依次传递
hand out 分发,散发,发给
hand over 交出,移交,让与
hang about 闲荡,徘徊,逗留
hang back 犹豫,踌躇,畏缩
hang on 抓紧不放;继续下去
hang up 挂断 ( 电话 )
have back 要回,收回
have on 穿着,戴着
hold back 踌躇,退缩;阻止,抑制
hold on 继续,握住不放
hold out 维持,支持;坚持,不屈服
hold up 举起,阻挡,使停止;抢劫
第六组
hurry up( 使 ) 赶快,迅速完成
keep back 阻止,阻挡;隐瞒,保留
keep down 控制,压制,镇压;压低
keep off 不接近,避开
keep up 保持,维持;继续,坚持
let down 放下,降低;使失望
let in 让 …… 进入,放 …… 进来
let off 放 ( 烟,烟火 ) ,开 ( 枪 )
let out 放掉,放出,发出
line up 排队,使排成一行
look back 回顾,回头看
look out 留神,注意,提防,警惕
look on 旁观,观看;看待,视作
look up 查阅,查考;寻找 ( 某人 )
look in 顺便看望
make out 辨认,区分;理解,了解
make out of 用 …… 做,从 …… 得出
第七组
make up 构成,拼凑;弥补,赔偿;化装
mix up 混淆,混合,搞糊涂
pass away 去世,逝世
pass off 中止,停止
pass to 转到,讨论,传到
pass out 失去知觉,昏倒
pay back 偿还,回报
pay off 还清 ( 债 )
pay down 即时交付,用现金支付
pay up 全部付清
第八组
pick out 选出,挑出,拣出;辨认,辨别出
pick up 拾起, ( 偶然 ) 得到; ( 车船 ) 中途搭 ( 人 ) ,学会
pull down 拆毁,拉倒;拉下,降低
pull in( 车 ) 停下,进站,船 ( 到岸 )
pull off 脱 ( 帽、衣 )
pull on 穿,戴
pull out 拔出,抽出; ( 车、船 ) 驶出
pull together 齐心协力
pull up( 使 ) 停下
put across 解释清楚,说明
put aside 储存,保留
put away 放好,收好;储存
put down 记下,放下;镇压,平定
put forward 提出
put in 驶进
put on 穿上,戴上;上演;增加 ( 体重 )
put out 熄灭,关 ( 灯 ) ;出版,发布;生产
put right 改正 ( 错误 ) ,整理
第九组
put up 提起,举起,提 ( 价 ) ;为 …… 提供食宿,投宿
ring off 挂断电话
rub out 擦掉,拭去
run down 撞倒,撞沉;追捕,追查
run off 复印,打印
run over 略读,略述;辗过,浏览,匆匆复习
see off 给 …… 送行
see through 看穿,识破;干完,干到底
set back 推迟,延缓,阻碍
set down 卸下,放下,记下,记入
set forth 阐明,陈述
set off 出发,动身;引起,使发生
set out 陈列,显示;动身,起程;制定
set up 创立,建立,树立;资助,扶持
show in 领入
show off 炫耀,卖弄
第十组
show up 使呈现,使醒目
shut out 排除
sit in 列席,旁听
sit up 迟睡,熬夜
speed up 使加速
stand out 突出,显眼
stand up 站起来,耐用
step up 提高,加快,加紧
step in 插入,介入
stick out 伸出,突出;坚持到底,继续
take away 消除;消耗
take down 记下,写下
take off 拿走,脱下;起飞
take on 呈现;接纳,承担,从事
take over 接管,接办
take up 占据;开始;拿起,接收
take up with 和 …… 交往,忍受,采用


初中英语常用介词短语列举:
1)at once 立刻         
2)at last 最后
3)at first 起先,首先        
4)at the age of… 在……岁时
5)at the end of… 在……之末      
6)at the beginning of… 在……之初
7)at the foot of… 在……脚下      
8)at the same time 同时
9)at night/noon 在夜里/中午      
10)with one's help 在某人的帮助下,由于某人的帮助
11)with the help of … 在……的帮助下    
12)with a smile 面带笑容
13)with one's own eyes 亲眼看见     
14)after a while 过了一会儿
15)from now on 从现在起       
16)from then on 从那时起
17)far example 例如        
18)far away from 远离
19)from morning till night 从早到晚    
20)by and by 不久
21)by air mail 寄航空邮件  
22)by bike/air/train/bus 骑自行车/乘飞机/火车/汽车
23)by ordinary mail 寄平信  
24)by the way 顺便说
25)by the window 在窗边
26)by the end of… 到……底为止
27)little by little 逐渐地  
28)in all 总共
29)in fact 事实上  
30)in one's twenties 在某人二十几岁时
31)in a hurry 匆忙  
32)in the middle of 在……中间
33)in no time (in a minute) 立刻,很快  
34)in time (on time) 及时
35)in public 公众,公开地  
36)in order to 为了……
37)in front of 在……前面
38)in the sun 在阳光下
39)in the end 最后,终于
40)in surprise 惊奇地
41)in turn 依次  
42)of course 当然
43)a bit (of) 有一点儿  
44)a lot of 许多
45)a little 一点儿  
46)on one's way to 某人在去……的路上
47)on foot 步行,走路  
48)a talk on space 一个关于太空的报告
49)on the other hand 另一方面  
50)at/on the weekend 在周末
51)on the left (right) 在左(右)边  
52)on the other side of 在……另一边
53)on the radio 通过收音机(无线电广播) 
54)to one's joy 使……高兴的是
55)to one's surprise 使……惊讶的是 


“It”用法及其句型和固定搭配,是英语语法的重点、难点,又是近几年考试的热点,因此在复习中应给予足够的重视。
It 句型归纳:
1. It is +adj.(+for sb./sth.) + to do sth.
用于此句型的形容词有:easy, hard, difficult,possible, important, impossible, necessary, good, bad, exciting, interesting, surprising等。如:
 It is necessary to change your job.
 It was very hard for them to walk such a long way in the snow.
2.It is +n.(+for sb./sth.) + to do sth.
用于此句型的名词有: pity, shame, pleasure, one’s duty, one’s job, fun, joy, good manners, bad manners等。如:
 It is a pity for you to have missed such a wonderful play.
 It is bad manners for the young to take up the seats for the old.
3.It is +adj.+of sb.+to do sth.
此句型中的形容词主要描述某人的品德、特征。能用于该句型的形容词有: kind, nice, wise,
silly, polite, impolite, friendly, foolish, clever等。如:
 How silly it was of you to give up such a good chance!
 It is friendly of the family to try to make me feel at home in their house.
4.It is +adj.(+n.)+doing sth.
此句型中的形容词和名词常见的有:no/little use, no/much good, useless等。如:
 It’s no use crying over spilt milk.
5.It takes sb.+一段时间+to do sth. 表示“做某事花费某人多长时间”。如:
It took us half an hour to ride to the town by the sea.
6.It is +及物动词的过去分词+that从句
此句型中常见的及物动词的过去分词有:said, told, known, reported, recorded, thought, believed, considered等。如:
It is reported that the Russian President will visit China next week.
7.It +不及物动词+that从句
此句型中不及物动词常见的有:seem, happen, appear, matter等。如:
 It seems that there will be a heavy snow tomorrow.
 It happened that I met my good friends in the museum yesterday.
8.强调句型:It is+被强调部分+that/who从句
在使用强调句型时要注意,指人时可以用who或that,其它情况一律用that。如:
 It was under the bed that my brother hid the ball this morning.
 It is Mr Bell who/that often comes and looks after the old man.
9.It is/has been+一段时间+since从句。如:
It is /has been three years since we saw each other last.
10.It is (high) time that sb. did sth.
该句型表示“某人现在该做某事了”,从句常用过去时(虚拟语气)说明现在应该做的事情。如:
 It’s six o’clock.It is high time that we went home now.

It 常用的固定搭配:
1. make it
(1)在口语当中相当于succeed,表示:成功、做到、说定、赶上、及时到达
例  It's hard to make it to the top in show business.
(2)在口语中相当于fix the date for,表示“约定好时间”
例  —Shall we meet next week?
—OK. We just make it next Saturday.
2. as it is
(1)相当于in fact,in reality表示“事实上,实际情况是……”
例  We had planed to finish the task today,but as it is we probably won't finish it until next week.
(2)相当于方式状语从句,表示“照原样”
例  Leave the table as it is.
3. as it were
相当于as one might say,that is to say,表示“也就是说,可以说,换句话说”
例  He is,as it were,a modern Sherlock Holmes.
4. if it weren't for…/if it hadn't been for…
用来引导虚拟语气,相当于without,or but for,表示“如果不是……,要不是……”
例  If it weren't for Tom,I wouldn't be alive today.
5. that's it
(1)相当于That's all. That's so much. 表示“至此为止,没有别的了”
例  You can have one more sweet,and that's it.
(2)相当于 That's right.表示“对啦”
例  — I guess the key to the problem is thechoice “A”
—That's it.
6. catch it
在口语中,相当于be punished/scolded for doing sth. wrong. 表示“因做错事而挨骂,受责备,受批评,受惩罚”
例  We'll really catch it form our teacher if we're late for class again.
7. have it
(1)相当于say,insist表示“说,主张,表明,硬说”
例  Rumour has it that they are getting divorced.
(2)相当于get to know something,表示“了解,知道,获悉”
例  I had it from John that she was going abroad.
8. have what it takes
在口语中,相当于be well qualified for,表示“具有成功的条件”
例  You can take it from me that your daughter has what it takes to be a star.
9. so it seems / appears.
10. Keep at it!(Don't give up!)
相当于go on,表示“继续做,不放弃”
例  My teacher asked me to keep at it.
11. Go it!(Go on!)拼命干,莽撞
12. Now you have done it!(You have done sth. wrong.)
13. Now you'll catch it!(You'll be punished.)
14. As it happened,…
在口语中,相当于it's a pity that…,表示“真不凑巧,真遗憾”
例  As it happened,they were out.
15. As it turned out,…
在口语中,相当于it was found to be in the end,表示“最后被证明是”
例  As it turned out,his statement was false.
16. Such as it is(they are)
在口语中,相当于although it may not be worth much,表示“虽然没有多大价值”
例  You can borrow my exam notebook,such as it is.
17. Take it/things easy.
相当于Don't worry or don't hurry. 用来劝告别人,表示“不要慌,别担心,存住气”
例  Take it easy! He will do it well.
18. Take it from me.
在口语中,相当于believe me what I say.表示“请相信我的话,我敢担保”
例  You can take it from me that he will make it this time.
19. For what it is worth…
在口语中,相当于although I'm not sure it's of value,表示“不管其价值如何”
例  Here is the article I promise you,for what it's worth.
20. Worth it
在口语中,相当于useful,表示“有好处,值得做”
例  Don't hesitate about it! It's worth it.
21. Believe it or not.表示“信不信由你”
例  Believe it or not,Tom is getting married to Mary next Sunday.
22. Take it or leave it. v. 要么接受要么放弃
例  That is my last offer. You can take it or leave it.
23. It all depends/that all depends
在口语中,相当于it hasn't been decided yet,表示“那得看情况,还没有定下来”
例  —Are you going to the countryside for holiday?
—It/That all depends.
24. It's up to sb.
在口语中,相当于it's decided by sb. 表示“由……决定,由……负责,取决于……”
例  —Shall we go out for dinner?
—It's up to you.

it用法小结:
It用作实词
表达以下概念:
指代前文提到的事物,前文中的this, that;
替代前文中的内容;
指代一位性别不明的小孩或未知的人;
指代未指明但谈话双方都知道的那件事;
指代时间、天气、气候、距离等自然现象。

一、it 作人称代词的用法
1. 指事物
作为人称代词,it 可以除人以外的一切事物或动物。如:
I dropped my watch and it broke. 我把手表掉在地上摔坏了。
It’s hard work, but I enjoy it. 工作很辛苦,可是我乐意干。
“Where is the dog?” “It’s in the bedroom. ” “狗在哪?”“在卧室里”。
2. 指人
it 指人主要用于指不性别不明的婴儿或用于确认某人的身份。如:
Is it a boy or a girl? 是男孩还是女孩?
There is a knock on the door. It must be the postman. 有人在敲门,一定是邮递员。
【说明】在答语中,常用来指本人,如说 It’s me。
3. 代替某些代词
代词 it 还可用于代替指示代词this, that 以及复合不定代词 something, anything, nothing等。如:
“What’s this?” “It’s a new machine. ” “这是什么?”“是一种新机器”。
Nothing is wrong, is it? 没出什么问题,是吗?

二、it 作非人称代词的用法
1. 基本用法
it 作非人称代词的用法,主要用于指时间、距离、价值、天气、气候及温度等自然现象。如:
It’s too late to go there now. 现在去那儿已经太迟了。
It rained all day yesterday. 昨天下了一天的雨。
It can get very hot here. 这里有时会很热。
2. 用于某些句型
It’s time for sth. 该做某事了。
It’s time to do sth. 该做某事的时候了。
It’s time for sb to do sth. 某人该干某事了。
It’s (about / high) time + that-从句. 某人该做某事了。(从句谓语用过去式,有时也用“should+动词原形”)
It’s first (second) time + that-从句. 某人第几次干某事。(从句谓语用现在完成时)
It’s + 时间段 + since-从句. 自从……有一段时间了。
It’s + 时间段 + before-从句. 过多长的时间才……

三、it用作形式主语
1. 基本用法
当不定式、动名词、从句等复杂成分用作句子主语时,为保持句子平衡,通常把真正的主语放在句末,而在句首使用形式主语it。如:
It’s very important to remember this. 记住这一点很重要。
It’s hard work climbing mountains. 爬山是费劲的事。
It’s unknown when he will come. 他什么时候来还不知道。
2. 用作形式主语的的重要句型
(1) It + be + adj. for (of) sb to do sth 某人做某事……
It is hard for him to make up his mind. 他很难下定决心。
It was foolish of her to say such a thing. 她说那样的话,真是太蠢了。
【说明】介词 of 与 for 的区别是:
of 用于指某人的性格、属性、特征等,介词for表示对象,意为“对……来说” 。
(2) It takes sb + 时间段 + to do sth. 某人做某事花了……时间
It takes years to master a new language. 要花多年的时间才能掌握一门新的语言。
【说明】此句型可以有以下多变种变体:It took me an hour to write the letter.
=The letter took me an hour (to write). =I took an hour to write the letter. 我写这封信花了一个小时
(3) It is up to sb to do sth. 该由某人做某事
It’s up to you to to make the choice. 得由你来作选择。
(4) it look (seem, appear, happen, occur) that [as if]… 似乎……
It seemed as though he didn’t recognize me. 他似乎没认出我来。
It happened that I was out when he called. 他打电话时我碰巧不在家。
(5) If it were not for… / If it hadn’t been for… 若不是因为……
If it were not for their help, we couldn’t have got over the difficulties. 要不是他们帮助,这些困难我们不克服不了的。

四、it用作形式宾语
1. 基本用法
当不定式、动名词、从句等复杂成分用作宾语且其后跟有宾语补足语时,通常会在宾语补足语前使用形式宾语,而将真正的宾语移至句末。
其基本结构为“动词+it+宾语补足语+不定式(动名词或从句)”。如:
I find it difficult to do the job well. 我发现做好这件事不容易。
I think it best that you should stay here. 我认为你最好住这儿。
We think it no use complaining. 我们认为抱怨是没有用的。
2. 用作形式宾语的几个特殊结构
(1) 动词+ it + that-从句。如:
I like it that you came. 你来了,我很高兴。
I take it (that) he will come on time. 我认为他会准时来的。
You can put it that it was arranged before. 你可以说这是以前安排的。
Rumor has it that the defence minister will soon resign. 据传闻,国防部长不久就要辞职。
【说明】能用于此结构的动词不多,常见的有 have, take, put, like 等。
(2) 动词 + it + when (if)-从句。如:
I dislike it when you whistle. 我不爱听你吹口哨。
We really appreciate it when she offered to help. 她来帮忙了,我们十分感激。
I’d prefer it if I didn’t have to do so much work. 要是我不必做那么多工作,好就太好了。
【说明】能用于此结构的动词不多,常见的有 enjoy, hate, love, like, dislike, appreciate, prefer 等。
(3) 动词 + prep + it + that-从句。如:
See to it that you’re not late again. 注意千万不要再迟到。
Look to it that this doesn’t happen again. 注意不要再发生这种事。
You may rely on it that he’ll come to meet you. 你放心,他会来接你的。
I can’t answer for it that he will come. 我不能保证他会来。
【说明】能用于此结构的动词不多,常见的有see to, look to, insist on, stick to, depend on, answer for 等。
(4) 动词 + it + 介词短语+ that-从句。如:
I owe it to you that I am still alive. 多亏有你我才仍然活着。
I took it for granted that he would help us. 我认为他会帮助我们的。
【说明】能用于此结构的动词不多,常见的有take it for granted, bring it to sb’s attention, owe it to sb 等。

it在强调句中的使用
It is+被强调部分+that(who)+其他
在使用强调句型时需注意以下几点:
1. 请注意强调句型的特殊疑问句 
2. 在强调原因状语从句时,只能强调由because所引导的从句。
3. 在强调not … until结构时必须把not与until一起放到被强调的位置上。
4. 注意强调句型与定语从句的区别。
5. 不管被强调部分是单数还是复数,其前一律用It is / It was,而不能用They are / There were之类的。
6. 被强调部分是指人时,被强调部分后可用that / who,被强调部分指物时,被强调部分后只能用that。
7. 被强调部分是指时间或地点时,被强调部分后通常用that,一般不用when,where之类的。例:
It is I who am right. 是我对。
It was you that were wrong. 是你错了。
It was in the Japan that he died. 他是死于日本。
It was yesterday that he got married. 他是昨天结婚的。
It was a computer that he bought last week. 他上个星期买的是一台电脑。
Where was it that she lived? 她是住在什么地方?
When was it that he left for Japan? 他是什么时候离开去日本的?
Who is it that teaches you English? 是谁教你们英语?


定语从句:
担任定语动能的句子称为定语从句。定语从句在句中的作用相当于形容词,故又称为形容词性从句。
定语从句所修饰的词叫先行词;定语从句一般用关系代词或关系副词来引导,关系词放在先行词与定语之间起连接作用,同时又作从句中的一部分。

定语从句的分类:
根据定语从句与先行词的关系,定语从句可分为限制性定语从句及非限制性定语从句。
限制性定语从句紧跟先行词,主句与从句不用逗号分开,从句不可省去;
非限制性定语从句主句与从句之间有逗号分开,起补充说明作用,如省去,意思仍完整。
1.由that引导的定语从句
一般情况下that可指人或物,可以代替who,whom和which,在从句中作主语或谓语动词的宾语,但不能作介词的宾语。如:
The comrade that(who)is speaking at the meeting is an advanced worker.
正在会上讲话的那个同志是个先进工人。
Is this the doctor that(whom)you talked about yesterday?
这就是你们昨天谈论的那位医生吗?
The letter that(which)I received yesterday was from my father.
昨天我收到的信是我父亲寄来的。
2.由who,whom和whose引导的定语从句
who在从句中作主语,whom在从句中作宾语,whose在从句中作定语。如:
This is the thief who stole my bike.这就是偷我自行车的那个贼。
He is the boy whom you wanted to find.他就是你想要找的那个男孩。
The girl whose mother is a doctor is waiting for you outside.妈妈是个医生的那个女孩在外面等你。
3.由which引导的定语从句
which指物,在从句中作主语或谓语动词的宾语。如:
The book which Mum bought me last week is called“Red Star Over China”.
妈妈上周买给我的那本书名叫《西行漫记》。
The house which Lu Xun once lived in is now the Lu Xun Museum.
鲁迅曾经住过的那所房子现在是鲁迅博物馆。
4.由where,when和why引导的定语从句
where在从句中作地点状语,when在从句中作时间状语,why在从句中作原因状语。如:
I will never forget the day when I joined the League.我永远忘不了我入团的那一天。
He will go back to the school where he studied next week.下周他要回到他曾经学习过的学校。
I don't know the reason why he quarreled with Zhang Lin.我不知道他同张琳吵架的原因。
[注意点]
关系代词在定语从句中作宾语时,关系代词常省去。如:
The play(which)I watched just now had been on twice on Channel
我刚才看的那个戏剧在3频道上已上演了两次。


限定性定语从句:
1. that即可代表事物也可代表人,which代表事物;
它们在从句中作主语或宾语,that在从句中作宾语时常可省略关系词,which在从句中作宾语则不能省略。
而且,如果which在从句中作“不及物动词+介词”的介词的宾语,注意介词不要丢掉,而且介词总是放在关系代词which的前边,但有的则放在它原来的位置
2. which作宾语时,根据先行词与定语从句之间的语义关系,先行词与which之间的介词不能丢
3. 代表物时多用which,但在带有下列词的句子中用that而不用which,这些词包括all, anything, much等,这时的that常被省略
4. who和whom引导的从句用来修饰人,分别作从句中的主语和宾语,whom作宾语时,要注意它可以作动词的宾语也可以作介词的宾语
5. where是关系副词,用来表示地点的定语从句
6. when引导定语从句表示时间
〔注〕值得一提的是,表示时间“time"一词的定语从句只用when引导,有时不用任何关系代词,当然也不用that引导
By the time you arrive in London, we will have stayed there for two weeks.
I still remember the first time I met her.
Each time he goes to besiness trip, he brings a lot of living necessities, such as towers, soap, toothbrush etc.
7. whose是关系代词,修饰名词作定语,相当于所修饰成分的前置所有格
8. 当从句的逻辑主语是some, any, no, somebody, anybody, nobody, something, anything, everything或nothing时,常用there is来引导

非限定性定语从句
非限定性定语从句的作用是对所修饰的成分作进一步说明,通常和主句间用逗号隔开,将从句拿掉后其他部分仍可成立
1. which引导的非限定性定语从句来说明前面整个句子的情况或主句的某一部分
2. 在引导限定性定语从句时,that有时相当于in which, at which, for which或at which
Attitudes towards daydreaming are changing in much the same way that(in which) attitudes towards night dreaming have changed.
人们对白日做梦的态度正在改变,这与人们对夜间做梦的看法的变化有非常相似之处。
I like the music for the very reason that(for which) he dislike it.
我出于某种原因喜欢这种音乐,而他恰恰与我相反。
We arrived the day that(on which) they left.
刚好我们到的那天他们走了。
3. 有时as也可用作关系代词
4. 在非限定性定语从句中,不能用that,而用who, whom代表人,用which代表事物
限定性定语从句口诀:
(口诀一)  
定语从句真奇妙,  
关系代(副)词来引导,  
定语从句分两种,  
是否限定看逗号。  
(口诀二)  
which指物who指人,  
地点where时间when,  
that人或物均可,  
why之前是reason。  
(口诀三)  
从句当中作宾语,  
whom可以代替who,  
为了句子更简练,  
关系代词可省去。  
(口诀四)  
关系若是表所属,  
whose用法不可无。  
除此之外还有啥,  
whom, which加of。  
(口诀五)  
关系代词不一般,  
介词经常用在前,  
此时不用that, who,  
which, whom才安全。 
引导定语从句的关系词:

关系词

词形

所修饰的先行词 

在从句中所作的成分 

关系代词

who

主语、宾语、表语

whom

宾语

which

主语、宾语、表语

that

人或物

主语、宾语、表语

as

人或物

主语、宾语、表语

whose=of whom/of=which

人或物

定语

关系副词

when

时间词

时间状语

where

地点词

地点状语

why

原因词

原因状语


关系代词的用法 :
1. 关系代词的句法功能 
(1)关系代词在句中作主语
例如:I prefer music that/which has great lyrics 
(2) 关系代词在句中作宾语 
例如:I like music that I can sing along with. 
(3)关系代词在句中作表语
例如:The house is not the one (that) it used to be.
2. 关系代词在从句中作名词的定语
例如:Is she the teacher whose hair is very short? 
3. 关系代词的用法 
(1)who和whom的用法:二者都用于指人。Who在定语从句中作主语、宾语,
whom 在定语从句中作宾语。Whom在从句中能坐介词的宾语,而who则不能。
例如:
I happened to meet the professor (who/whom) I got to know at a party 
in the shopping center yesterday.
(2)whose的用法:一般指人,有时也指物。在定语从句中作定语。 
例如:I have got a friend whose brother is training for the Olymoics.
(3)which的用法:一般指物,在定语从句中作主语、宾语、偶尔作定语。 
例如:The photo which we liked best was taken by Zhao Min. 
(4)that的用法:指人或物,指人时可与who、whom互换,指物时可与that互换。
在从句中可作主语、宾语,还可作表语。 
例如:It is a book (that/which) no one really likes. 
4. 宜用who不宜用that的情况 
(1)先行词是指人的不定代词时 
例如:Congratulations to our winners and thanks to everyone who entered the competitions.  
(2) 先行词指人时且含有较长的后置定语     
例如:The boy was crying hard who lost his way while looking for his mother.
5. 在以下情况中,关系代词常用that
(1)先行词为all, little, few, none 及some-, any-, no-与thing所组成的复合单词时,只能用that。
例如:There is nothing that will stop us making progress. 
(2)先行词前有only, some, any等形容词修饰时,只能用that。
例如:This is the only problem that we can’t work out.
(3)先行词前由形容词的最高级或序数词修饰时,只能用that。
例如:This is the most interesting book that I have ever read.
(4)先行词同时包括人和物时,只能用他和她,
例如:Lu Xun and his works that we are familiar with are considered great.
6. 只能用which不能用that的情形
(1)当非限制性定语从句中的先行词指物时,只能用which
例如:The pencil-case, which I bought last week, is missing.
(2)关系代词前面有介词时,只能用which
例如:The tree under which we used to take a rest has been cut down.
(3)先行词本身就是that时
例如:I don’t like that which he did.

关系副词的用法 
1. when的用法:它的先行词通常是time, day, morning等。有时也可和一些介词一起引导定语从句。
例如:Do you remember the time when she went abroad?
2. where的用法:它的先行词通常有place, spot, room等。
例如:I like places where the weather is always warm.
3. why的用法:它的先行词只有reason。Why时常也可以省略。
例如:Tell me the reason why she was late.