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初中三年级英语

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  • 句型转换
    句型转换。
    1. You cantake the escalator to the second floor and get to the cafe. (对画线部分提问)
                                 I                            the second floor and get to the cafe?
    2. The New Year's party wasvery organized and enjoyable.(对画线部分提问)
                                 the New Year's party?
    3.I haven't seen a TV play for long, and Lily hasn't either. (变为同义句)
                   I               Lily ________ seen a TV play for long.
    4. The man on the bike is Jim. (改为含有定语从句的复合句)
    The man ________       ____         ____the bike        ____Jim.
    5. If it doesn't rain tomorrow, they'll go to the park. (改为同义句)
                    it                tomorrow, they'll go to the park.
    本题信息:2012年同步题英语句型转换难度一般 来源:段秀玲
  • 本题答案
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本试题 “句型转换。1. You cantake the escalatorto the second floor and get to the cafe. (对画线部分提问) I the second floor and get to the cafe?2. The New Y...” 主要考查您对

关系代词

疑问副词

频度副词

实义动词的单数第三人称形式

动词短语

并列连词

状语从句

定语从句

主谓一致

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。
  • 关系代词
  • 疑问副词
  • 频度副词
  • 实义动词的单数第三人称形式
  • 动词短语
  • 并列连词
  • 状语从句
  • 定语从句
  • 主谓一致
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。  


疑问副词:
用来引导特殊疑问句,表示时间,地点,方式,原因等。
常见的有:when,where,how,why等。

疑问副词的用法:
1.疑问副词是问何时、何地、如何、因何的副词,主要有when, where, how, why。

2.疑问副词用在句首。
How long have you been staying in America?
你在美国待多久了?

3.疑问副词在句中引导名词子句。
I want to know where she has gone.
我想知道她去哪里了。

4.疑问副词后接不定词构成的名词片语,在句中可以作主词、受词或主词补语。
How to solve the problem gives him a bad headache.
如何解决这个问题使他伤透脑筋。
(How to solve the problem作主词。)
I don't know how to answer the question.
我不知道如何回答这个问题。
(how to answer the question作受词。)
The patient is in urgent need the medicine, but the problem is where to get it.
这个病人急需这种药,但问题是哪里能找到。
(where to get it作主词补语。)

5.疑问副词引导的名词子句可作主词、受词或主词补语。
When we are to start the competition hasn't fixed yet.
我们什么时候开始比赛还没有定下来。
(When we are to start the competition作主词。)
She asked her husband where he had been.
她问她丈夫去哪里了。
(where he had been 作受词。)
The question is when we can finish our work.
问题是我们何时能完成我们的工作。
(when we can finish our work作主词补语。)


疑问代词与疑问副词的区别:
1. 疑问代词做对陈述句的主语,宾语或定语提问,即做句子的主语,宾语或定语,如what, who/ whom, whose.
eg. Who is talking ? What can you see?
Whose shirt is this?
2.疑问副词对时间,地点,方式等状语提问,如when, where, how 等.
eg. When is your birthday? Where are you going?
How do you know?
常见的疑问代词:what  who  which  whom(只做宾语)
疑问副词:how  where  when
还有whether是疑问连接词。

频度副词:
是表示动作发生频率的词。
常见的有:
ever, never, rarely, seldom, once, often, occasionally, constantly, frequently, usually,continually, always 等。
例如:He often came to see us.
            She always was late.
常见频度副词在表示程度上有别,按频率大小排列如下:
always(100%)>usually(80%)>often(60%)>sometimes(40%)>seldom(20%)>hardly (10%)>never(0%)


常见程度副词用法列举:
◆always 频率最高,表示动作重复、状态继续,表示“一直、总是”,其反义词为never。always等与not连用时,表示部分否定。如:
The rich are not always happy. 有钱的人并不总是快乐的。
如果要变为否定句,应将always改为never才能全部否定。如:
Li Ping is always late for school. 李平上学总是迟到。
Li Ping is never late for school. 李平上学从不迟到。(全部否定)
Li Ping is not always late for school. 李平上学不总是迟到。(部分否定)
频度副词通常和一般现在时连用,表示动作发生的频率。但always与进行时连用时,并不强调动作正在进行,而是表示赞叹、厌烦等情绪。如:
He is always thinking of others. 他总是想着别人。(赞叹)
She is always asking silly questions. 她总是问些愚蠢的问题。(厌烦)
The boy is always asking for money. 这个小男孩总是要钱。(厌烦)

◆usually意为“通常”,表示习惯性动作或状态,很少有例外。如:
We usually go to school at seven in the morning. 我们通常在早上七点上学。
My mother and I usually go shopping on Sundays. 我和妈妈通常在星期天去买东西。

◆Often意为“经常,时常”,表示反复性的动作或状态,中间有间断,不如usually那么频繁。其反义词是seldom。often在句尾时常被very或quite修饰。如:
It often rains here in April. 这儿四月份常下雨。
he boys often eat noodles and the girls sometimes eat them. 男生经常吃面条,女生有时吃。
I often chat with my friends under the big tree. 我经常在这棵大树下和朋友聊天。
He writes to his friends quite often. 他常给他的朋友写信。

◆sometimes意为“有时”,频率不及often,表示动作偶尔发生,间断时间较长。其位置比较灵活,放在句首、句中、句末都可。如:
Sometimes we go to the cinema and at other times we go for a walk.
有时我们去看电影,有时我们去散步。
I sometimes watch TV in the evening. 我有时晚上看电视。
My father has lunch in the factory sometimes. 我父亲有时在工厂吃午饭。

◆seldom意为“很少”;never意为“从不”。这两个副词表示否定意义,动作几乎不会发生。如:
He seldom eats breakfast. 他很少吃早餐。
The little girl seldom goes out. 这个小女孩很少外出。
I will never forget your kindness. 我永远忘不了你的好意。
The boys never eat chocolate and the girls seldom eat it. 男生从不吃巧克力,女生很少吃。
Btter late than never. [谚语] 迟到(迟做)总比不来(不做)好。

◆hardly具有否定意义,表示“几乎不、简直不”,除非特殊情况,否则不会发生。如:
The boy is so young that he could hardly understand it. 这个孩子太小了,不可能懂得这件事。

◆对上述频度副词提问时,用how often。如:
I write to my brother sometimes.
→How often do you write to your brother?

频度副词在句中不同位置的用法比较:
一、频度副词在否定句中的用法
在否定句中,有的频度副词位于否定词之前或之后均可,而有的频度副词则必须位于否定词之后,而还有的频度副词却必须要位于否定词。
大致情况如下:
1. 频度副词usually和often可位于否定词not之前或之后。
他们不常开这样的晚会。
正:They don’t often hold such parties.
正:They often don’t hold such parties.
星期日我们一般不在9点以前起床。
正:We don’t usually get up before nine on Sundays.
正:We usually don’t get up before nine on Sundays.
在否定句中,频度副词用于句中或句首,有时但会导致意思不同。
He doesn’t usually sleep for two days at a time. 他很少一连睡两天。
Usually he doesn’t sleep for two days at a time. 他连续两天不睡觉是常事。
2. 频度副词always总是位于否定词之后,不可位于否定句之前。
Things are not always what they seem to be. 外表往往是靠不住的。
Silence must not always be read as consent. 沉默并不见得一定意味着同意。
3. 频度副词sometimes总是位于否定词之前,不可位于否定词之后。
Jim is sometimes not very punctual. 吉姆有时不太准时。
Debbie is sometimes not responsible for what she does. 黛比有时对她所做的事不负责任。

二、频度副词位于句末的用法
1.sometimes常可用于句末。 如:
We all get into trouble sometimes. 我们有时都会遇到麻烦。
You can’t work all the time,it does you good to go out and enjoy yourself sometimes.
你不能总是工作,有时出去放松一下会对你有好处。
2. often有时可置于句末,但通常会带有very, quite, fairly, more, so等修饰语。如:
We’ve been there quite often. 经常去那里。
When I was young, I used to play tennis very often. 我年轻时经常打网球。
Diana used to travel a lot. These days she doesn’t go away so often.
娜过去经常旅游。最近她不常出门了。
We're not exactly on intimate terms, but we see each other fairly often.
虽算不上关系密切,但还常见面。
注:有时也可不带修饰语,但主要见于否定句或疑问句。 如:
He writes to me often. 他经常给我写信。
Do you come here often? 你常来这儿吗?
I don’t come here often. 我不常来这儿。
3. usually有时也用于句末,其前不用修饰语。
I’m not late, usually. 我通常不迟到。
I get paid on Fridays usually. 我通常在星期五领工资。
4.seldom 一般不用于句末,除非其前带有only,very等修饰。
We go out very seldom. 我们绝少外出。
I play basketball very seldom indeed. 我很少打篮球。
5. always一般不用于句末,偶尔用于句末,此时它不表法“总是”,而表示“永远”。
I’ll love you always. 我将永远爱你。
另外,有时用于句末是因为句子有所省略的缘故。
Generally they walked together on Sunday, but not always.
他们一般在星期日一起散步,但并不总是如此。
句中的but not always=but they didn’t always walk together on Sunday。

三、频度副词位于句首的用法
1. sometimes常可用于句首。
Sometimes she comes late. 有时她来得晚。
Sometimes she didn’t agree with me. 有时她和我意见不一致。
Sometimes we get a lot of rain in August. 有时在8月份雨水很大。
2. often用于句首时,通常表示强调,且其前一般有quite, very修饰。
Very often he comes in late. 他常常迟到。
Quite often the phone rings when I’m in the bath. 电话经常在我洗澡时响。
3.usually有时也用于句首,其前不用修饰语。
Usually I get up early. 我平时起得早。
Sometimes he comes by bus, but usually he comes by taxi.
有时他坐公共汽车来,不过他通常还是打的来。
Usually cooking pots have two small handles but pans have one long handle.
通常地深底煮锅有两只把手而平底锅只有一个长长的把手。
4.always一般不用于句首,除非是用在祈使句中。
Always remember this. 请时刻记住这一点。
Always look in the mirror before starting to drive. 一定要先看看反光镜再开车。
另外,never也可用于祈使句的句首。
Never tell him the news. 千万不要告诉他这消息。
Never ask her about her marriage. 决不要问她结婚的事。
5.在正式文体中,表示否定意义的副词seldom, never可位于句首,但此时其后要用倒装语序。
Seldom has there been such a happy meeting. 过去很少有过这样愉快的会议。
Never did he think the book would be finished so soon. 他可没想到这本书会这么快看完
另外,once a year (每年一次), twice a week (每周两次), three times a day (一天三次), every Saturday afternoon(每星期六下午)等,
这些时间状语也表示频率,它们可以和频度副词用在同一个句子中,表达上没有重复。如:
We usually go to the cinema four times a month. 我们通常一个月看四次电影。


频度副词的用法:
 频度副词是副词的一种,在初中阶段常用的有四个,即always, usually,often,sometimes。它们的用法如下:
一、频度副词在句中的位置。
1.频度副词在句中习惯上位于be动词、助动词之后,行为动词之前。如: 
She is often late for school.她上学经常迟到。
He usually goes to bed at about 12.他通常(午夜)十二点钟睡觉。
When do you usually get up in the morning?早上你通常什么时候起床?
2.sometimes是个特殊的频度副词,既可以放在be动词、助动词之后,行为动词之前,也可以放在句首,还可以放在句尾。如:
I sometimes think that it is a great mistake.我有时想这是一个大错。
Sometimes I help my mother in the house.有时候我帮助妈妈做家务。
3.often可以放在句中,也可放在句尾,习惯上不放在句首。如: 
We have been there quite often.我们经常到那儿去。
She writes to me often. 她经常给我写信。
4.如果有两个助动词,频度副词通常放在第一个助动词后面。如:

We have never been invited to one of their parties. 他们聚会,一次也没邀请过我们。

She must sometimes have wanted to run away. 她有时候一定想到过要逃走。
5.这些频度副词的位置与句中谓语动词有无助动词有关。句中没有助动词时,副词置于动词be之后,其它动词之前。
频度副词位于助动词之前两种情况:
①为了表示强调,频度副词有时也可位于动词be、助动词、情态动词之前,此时助动词等应重读。如:
She always was late. 她老是迟到。
I never can remember. 我永远也记不住。
②在简略答语中,当频度副词与动词be、助动词或情态动词位于句末时,频度副词必须前置。
—“Philip is late again.”
—“Yes, he always is.”
—“菲利普又迟到了。”
—“是的,他总是迟到。”
— “Can you park your car near the shops?”
—“Yes. I usually can.”
— “你可以在商店附近停车吗?”
—“是的,通常可以。”
6.频度副词后的动词可以是动词的任何形式,具体什么形式和频度副词本身没有关系。
如:
I have never been to the moon.
 He sometimes goes to school by bike.
   
二、表示频度方面的区别:
1.always是频度最大的词,意为"总是;永远"。如:
  I shall always remember my first day at school.我将永远记住我上学的第一天。
2.usually意为"通常",即很少例外,频度仅次于always。如:
  What do you usually have for breakfast?你通常早餐吃什么?
3.often意为"经常",在频度上不如usually那么频繁。如:
  Li Ping often does his homework in the afternoon.李平经常在下午做作业。
4.sometimes意为"有时候",频度比often小,表示动作偶尔发生,间断较大。如:
  1.I sometimes go to the library.我有时去图书馆。
  2.Sometimes I read a book in the evening.我有时在晚上看书。

三、频度副词与not连用时,表示部分否定;对频度副词进行提问时,要用how often。如:
1.A great scholar is not always a very wise man.大学者未必一定是极聪明的人。
2.We go to the cinema sometimes.(对划线部分提问)
    How often do you go to the cinema?


在一般现在时的肯定句中,当主语为非第三人称单数时,谓语动词用原形;
当主语为第三人称单数时,谓语动词用单数第三人称形式。


实义动词的一般现在时的单数第三人称形式遵从“s,es, ies”六字母规则。如下表所示:
规则 动词原形 第三人称
单数形式
s 一般在词尾加s(读音规则:
清清浊浊元浊,
在清辅音后读清辅音/s/,
在浊辅音和元音后读/z/)
stop
take
clean
play
grow
stops/s/
takes/s/
cleans/z/
plays/z/
grows/z/
es 以,x,ch,sh,或o结尾的动词
加-es(读/iz/)
pass
fix
wash
watch
do
passes
fixes
washes
watches
does
ies 以辅音字母
加y结尾的动词,变y为ies(读/iz/)
fly
carry
hurry
flies
carries
hurries
实意动词单数第三人称变化规律:

注意:不规则变化的有have—has, be—is, go—goes, do—does

一般现在时,当主语是第三人称单数时,谓语动词要用第三人称单数形式 
主语是第三人称单数有以下几种情况: 

(1) 不可数名词做主语:
Some water is in the glass 

(2) 单个的可数名词做主语:

The girl is Chinese.  My watch is on the dresser. 

(3) He ,she , it 等代词单个做主语: 
He is in the tree. She likes her family very much. 
(4) 单个的人名,地名或称呼作主语:
Mary is a doctor.  Uncle Li speaks a little English.   
Changchun is a beautiful city. 

(5) 指示代词this, that 等作主语:
 This is a pear.  That is an apple . 

(6) Everyone, everything ,something, nobody, nothing.等不定代词作主语时 
Is everyone here today?   Everything is ok . 

(7)单个数字作主语时:
”8” is a good number in China.

动词单数第三人称形式的一般现在时的句子的否定句、疑问句及特殊疑问句。
    

否定句:
在主语的后面实义动词前加
doesnt(注意实义动词应恢复原形。)     

主语(单三)+doesn + 动词原形+其他 

Jim likes football变否定: Jim doesn’t like football             

He has lunch at school. 变否定:He doesn’t have lunch at school.   


一般疑问句及答语,在句子前面加助动词
does. 实义动词恢复原形     

Does +主语(单三)动词原形+其他 

Does your father work ? Yes, he does. /No, he doesn’t    


特殊疑问句:特殊疑问词
+一般疑问句 

特殊疑问词+ does +主语(单三)动词原形+其他         

Where does a bird live ?         

How does she go to school 


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



并列连词
主要是用来表示并列关系、选择关系、因果推理关系等。也可用来连接平行的词,词组或分句。

并列连词表示关系及代表实例:
1.表示并列关系
表示并列关系的连词主要含有“和”、“补充”、“增加”等意思。用来表达并列关系的连词有如下几个:
and 和 both...and...二者都
either...or...或者...或者...
neither...nor...既不...也不...
as well as 也、连同
not only...but (also)... 不但...而且...
e.g.
I used to live in Paris and London.
我过去住在伦敦和巴黎。
Both Jane and Jim are interested in pop music.
詹妮和吉姆对流行音乐都很感兴趣。
She is not only kind but also honest.
她不但和蔼而且诚实。
Bob as well as his parents is going on holiday this summer.
鲍勃和他的父母今年夏天要去度假。

2.表示转折关系
常用来表示转折关系的并列连词有如下几个:
but 但是
yet 然而
still 仍然
while 然而
while 然而、偏偏
e.g.
The winter in Beijing is very cold while that of Kunming is warm.
北京的冬天很冷,然而昆明的冬天却很温暖。
I explained twice, still he counldn't understand.
我解释了两遍,然而他却还不懂。

3.表示选择关系
表示选择关系的并列连词:
or 或者
or else 否则
otherwise 否则
neither...nor... 既不...也不...
either...or... 或者...或者...
e.g.
Would you like leave or would you like to stay?
你是想走还是想留?
You can come either on Saturday or on Sunday.
你可以星期六来也可以星期天来。
Neither you nor I nor anyone else believes such things.
不管你我或者其他任何人都不会相信这件事。

4.表示因果推理关系
表示因果关系的并列连词主要有so,for,then,therefore 等。
e.g.
The air here is polluted, so the crops are dying.
这里的空气受到了污染,所以庄稼快死了。
The leaves of the trees are falling, for it's already autumn.
树叶在落下,因为秋天已经到来了。


并列连词注意事项:
并列连词for引导的分句只能放在句尾,前面用逗号隔开,表示补充说明的微弱理由,只是为前面的内容提供判断的理由,有时译为并列的某种形式。
这与because不同,because引导的是一种明确的因果关系,解释原因,常可回答why的提问。
几个特殊并列连词用法:
一、表示并列关系的and,or,well,as,not only...but also... 等连词也有比较活跃的用法。
and 作为并列连词有多重含义,除了可以表示并列关系外,还可以表示顺承、目的、条件、反复等关系。
e.g:He went to market and bought some vegetables.(表示顺承,动作的先后发生)
他到市场买了一些蔬菜。
Come and help me out.(表示目的)
过来帮我一下。
Be careful and you'll make fewer mistakes.(表示条件)
如果仔细,你所犯的错就少。

二、or 与 either...or...
or表示为“否则”的话,前句一般是祈使句,后句用一般将来时。
在表示选择关系时or 与 either...or... 用法相同,但 either...or...更具强调性。
在多个对象进行选择时,可以用A or B or C... , either A or B or C... , neither A or B or C... 。
e.g:Either Jim or Jake or Jeff knows about this.

三、as well as 与not only... but also...
名词+as well as+名词作主语时,强调前面的名词,谓语动词要根据前面的名词而定。
not only...but also...连接名词作主语时,其强调在后者,谓语动词要根据后面的名词而定。
e.g:China as well as many other countries loves peace.
中国与世界上的其他许多国家一样热爱和平。
Not only Bill but also his parents want to go traveling by bike.
不仅比尔而且他的父母都想骑自行车去旅游。
注:当or,neither...nor...,either...or 等连接主语时,谓语动词由or或nor后面的部分而定。
并列连词表示关系:

种类

用法 

举例 

并列连词

表示转折关系

but, yet等

表示因果关系

For, so等

表示并列关系

And, or, either…or,
neither…nor, not only..
but also, as well as等


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。


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.


英语中的一致主要包括主语和谓语在人称和数上的一致、时态一致、名词和其代词的一致。
主语和谓语保持一致叫主谓一致,即谓语动词的形式必须随着主语单、复数形式的变化而变化。
主谓一致原则:
1、语法上的一致
所谓语法一致原则,即主语和谓语的语法形式在人称和数上取得一致。
谓语的单、复数形式依据主语的单、复数形式而定:主语为复数,谓语动词用复数;主语为单数或者是不可数名词,谓语动词用单数。
China belongs to the Third World. 中国属于第三世界。
We are sure he will come. 我们肯定他会来。
使用语法一致的情况
(1)当主语是and,both…and连接的并列结构
如果主语指的是两个或两个以上的人或物,则谓语动词用复数。
My mother and I have seen the film. 我妈妈和我已看过这部电影。
Both rice and wheat are grown in this part of China. 在中国的这个地方既种稻子又种小麦。
注意:由and连接的并列主语前面分别有each,every,no修饰时,其谓语动词用单数形式。
Every boy and every girl has to receive education in our country. 在我国每一个男女孩子都得受教育。
No student and no teacher was invited to the party. 师生没有被邀请参加晚会。
(2)主语后面接说明主语的修饰语
主语后面接说明主语的修饰语如:
with,along with,together with,as well as,like,rather than,but,except,besides,including,in addition to,
谓语动词不受修饰成分的影响,仍保持同主语一致的关系。
The teacher with two students was at the meeting. 那位老师和两个学生参加了会议。
The girl as well as the boys has learned to drive a car. 这个姑娘和男孩子一道,也学会了开汽车。
A library with five thousand books is offered to the nation as a gift.一个有5000册书的图书馆作为礼物赠送给了国家。
E-mail, as well as telephones, is playing an important part in daily communication.电邮和电话在日常的通信中起着很重要的作用。
Nobody but Jane knows the secret.只有简知道这个秘密。
All but one were here just now. 刚才除了一个人外都来了。
(3)非谓语动词或从句作主语
非谓语动词 (动词的-ing形式、不定式)或从句作主语时,谓语一般用单数形式。
When and where to build the new factory is not decided yet.什么时候在什么地方建新工厂还没定下来。
Checking information is very important. 核实事实是非常重要的。
To learn foreign languages is not easy. 学习外语并非易事。
When we will hold the meeting is not decided yet. 我们何时开会尚未决定。
注意:当what引导主语从句或由 and连接两个动词不定式或动名词作主语时,谓语动词的数应根据意义一致的原则来决定。
What we need here is money.我们这里需要的是资金。
What we need here are workers.我们这里需要的是工人。
Lying and stealing are immoral.说谎与偷窃是不道德的。
(4)each和复合不定代词作主语
each和some/any/no//every十body/one/thing构成的复合不定代词:
anyone、anybody、anything、everyone、everybody、everything、someone、somebody、something、no one、nobody、nothing、each、the other作主语,谓语动词用单数。
Each is worse than the one before. 一个比一个差。
Nobody knows the answer. 没有一个人知道这答案。
Someone wants to see you. 有人想见你。
Is there anything in the box?箱子里有什么东西吗?
There is a lot of milk in the bottle. 瓶子里有很多奶。
(5)“many a +单数名词”作主语
“many a、(很多)/more than one(不只一个)+单数名词”作主语时,谓语动词用单数形式。
Many a student has been to Beijing. 很多学生去过北京。
There is more than one answer to your question. 你的问题不只有一个答案。
(6)“one of+复数名词十定语从句”之前有the等限定词和修饰语
“one of+复数名词十定语从句”之前有the only,the very,the等限定词和修饰语时,定语从句的谓语动词用单数形式。
Tom is the only one of those boys who is willing to help the old man.
汤姆是唯一的一个愿意帮助那个老人的男孩。
He is the only one of the students who has been a winner of scholarship for three years.他是这三年来唯一的一个获得奖学金的学生。
注意:如没有这些限定词和修饰语,定语从句的谓语动词采用复数形式。
Tom is one of the boys who are always ready to help others. 汤姆是个随时愿意帮助别人的男孩。
(7)由两个部分组成的物体名词作主语
英语中有些由两个部分组成的物体名称如g1asses(眼镜),scissors(剪刀),shorts(短裤),shoes(鞋子),trousers(裤子)等作主语,其后的谓语动词用复数形式。
His glasses were broken, so he can't see well. 他的眼镜碎了,因而看不清楚。
His trousers are made of cotton. 他的裤子是棉布的。
注意:若这类名词前带有pair等表示单位的名词时,则以这些名词的单、复数形式决定动词的形式。
Two pairs of trousers are missing. 两条裤子不见了。
This pair of shoes is not on sale. 这双鞋不出售。

2、意义上的一致
意义上的一致是指谓语动词与主语的一致取决于主语所表达的意义。若主语形式上为复数,而意义上是单数,动词要用单数;
若主语形式上为单数,而意义上为复数,则动词用复数。
The United States is in North America. 美国在北美洲。
The police are looking into the matter. 警察正在调查此事。
使意义上的一致的情况
(1)由and连接两个并列主语
其后的谓语动词一般用复数形式。但如果两个单数名词指同一个人、同一事物、单一概念时,谓语动词要用单数,有时两个名词共用一个冠词。
The worker and writer has written a new novel. 这位工人兼作家写了一部新小说。(两个名词共用一个冠词)
There is a journalist and writer living in America whose name is Alex Haley. 在美国有一个名叫亚利克斯?哈利的记者兼作家。
Truth and honesty is always the best policy. 真诚总是上策。
注意:用and连接起来的两个单数主语,谓语动词可以是单数,也可以是复数。
Three and five makes /make eight.三加五等于八。
Time and tide wait/waits for no man .岁月不等人。
(2)形复意单的名词作主语
①复数形式的专有名词(表示国家、城市、机构、组织以及书籍、报纸、杂志等)做主语,通常作为整体看待,谓语动词用单数。
The United States is in North America.美国在北美洲。
The Arabian Nights is read all over the world.《天方夜谭》是流传世界各地的名著。
The New York Times has a wide circulation.《纽约时报》销路很广。
注意:表示山脉、群岛、瀑布等的专有名词和以复数形式出现的表示同姓的一家人或同名、同姓的若干人,谓语也用复数。
The Alps rise over 4 countries.阿尔卑斯山脉跨越了四国。
Niagara Falls are not as high as Victoria Falls.尼亚加拉瀑布没有维多利亚瀑布高。
The Smiths were also invited.史密斯一家人也受到了邀请。
There are 3 Marys and 2 Roberts in my class.我班有三个叫玛丽、两个叫罗伯特的学生。
②以-ics结尾表示学科的名词做主语,通常表示单数意义,谓语动词用单数形式。这类名词有:
physics, politics, mathematics, economics, athletics, electronics等。
Politics is now taught in all schools.现在各学校都开设政治课。
Economics is a science of the way in which industry and trade produce and use wealth.经济学是研究工业、贸易生财和用财之道。
注意:当这些动词表示有关方面的活动、情况、见解、原理等意思时,谓语动词需用复数形式。
What are his politics?他的政见如何?
The economics of national growth are of the greatest importance to all modern governments.国家发展经济的原理对现代各国政府都重要。
③news,maths,plastics,physics,works,means(方法),the United States等虽然以-s结尾,但意义上作为单数看待。
“News of victories keeps pouring in as our army advances,” the company commander said. 集团军司令说:”
随着我们军队的推进胜利的消息接踵而至。”
Mathematics/Physics is a required subject for us.
数学/物理是我们必修的科目。
Every possible means has been used to prevent the air pollution,but the sky is still not clear.
所有可能的直至污染的方法都用了,但天空还是不晴朗的。
④成对的名词做主语时用单数形式。
Bread and butter is a daily food in the West .面包抹黄油是西方人每天的食品。
His gratitude and devotion to the Party is endless.他无限感觉,无限忠于党。
⑤“one and a half +复数名词”做主语,谓语动词用单数。
One and a half pears is left on the table .一只半梨剩在桌子上。
One and a half days is all I can spare.一天半是我所能挤出的全部时间。
注意:“one or two+复数名词”做主语,谓语动词用复数。
One or two days are enough to see the city.参观该市一两天就足够了。
There are one or two things I want to talk over with you .我有一两件事想跟你商量。
(3)有生命的集体名词作主语
有生命的集体名词 (如people,police,cattle,militia)作主语,谓语动词用复数形式。
Cattle are also kept. 还养了一些牛。
There are many people there. 那里有很多人。
The police are looking for the thief. 公安人员在搜寻那个小偷。
All the people of the world want peace.全世界人民都渴望和平。
注意:family,team,class,government,audience,crew,committee等集体名词,如果作整体看待,谓语动词用单数形式;
如果作个别成员看待,谓语动词用复数形式。people作“民族”解时,作单数用。
Zhang’s family is rather big, with twelve people in all.张家很大,一共12口人。
The family are sitting at the breakfast table. 这家人正坐在早餐桌旁。
My family is a large one. 我家是个大家庭。
The class are doing experiment in the lab. 全班同学正在实验室里做实验。
The class has won the honour. 这个班获得了荣誉。
The Chinese people is a great people.中华民族是一个伟大的民族。
(4) 名词化的形容词作主语
名词化的形容词作主语,按照意义一致的原则决定谓语动词的单、复数形式。
如果指一类人,谓语动词用复数形式,如果指一个人或抽象概念,谓语动词用单数形式。
这类形容词有:old, young, rich, poor, blind, deaf, dead, sick等。
The rich are not always happy. 富人也有不开心的时候。
The wounded is a policeman. 受伤者是一名警察。
The beautiful is not always the same as the good. 漂亮的不一定就等于好。
(5) 表示时间、距离、金钱、重量等的复数名词作主语
表示时间、距离、金钱、重量、度量、容量、温度等的复数名词做主语,通常看作一个整体,谓语动词用单数形式。
Twenty years has passed since we left school. 我们离开学校已经20年了。
Ten thousand dollars is a lot of money. 一万美元是一大笔钱。
Two months is quite a long time. 两个月时间是很长的。
Two hours is enough for us to do this experiment.我们做这个实验两个小时就够了。
Thirty kilometres is a good distance.30公里是一个相当远的距离。
注意:如果说话人侧重一个个的个体,谓语动词用复数形式。
Twenty years have passed since we parted.自从我们分手以后20年己经过去了。
(6)“a number of十复数可数名词”与“the number of十复数可数名词”作主语
“a number of十复数可数名词”表示 “一些、许多”的意思,谓语动词用复数;
“the number of十复数可数名词”表示 “……的数目、数量”,谓语动词用单数。
The number of people invited was fifty, but a number of them were absent for different reasons.
邀请来的人数是50,但很多人因不同的原因没来。
A number of books are missing from the library.
图书馆丢了许多书。
The number of workers in this factory is increasing.
这家工厂的工人数目正在增加。
(7)none of和neither of后跟复数名词或复数代词作主语
none of和neither of后跟复数名词或复数代词时,有时作单数看待,有时作复数看待,主要根据说话人的意思决定。
None of them has arrived yet at the settlement. 他们没有一个到达新住宅区。
None of them have arrived yet. 他们都还没到。
(8)“分数/百分数+of短语”作主语
“分数/百分数+of短语”作主语,这时要以of短语中的名词是否为复数而定。
Two fifths of the land in that district is covered with trees and grass.该地区五分之二的土地为树木和草所覆盖。
89% of smokers are male. 89%的吸烟者是男性。
In the USA, 75% of the grain is used to feed animals. 在美国,75%的谷物用来喂养动物。
Two-thirds of the earth's surface is sea. 地球表面的2/3是海洋。
Two-thirds of the people were against the plan. 2/3的人都反对核计划。
(9)表示部分概念或不定数量的名词或代词作主语
表示部分概念或不定数量的名词或代词作主语,谓语动词用单数还是复数,应根据后接名词的单、复数形式而定。
这些名间或代词有all,any,enough,half,more,most,the rest,part,some等。
The rest of the buildings are easy to get to. 其余的建筑物并不难上。
The rest of his life was happy. 他的晚年生活很幸福。
Most of my time was spent in reading. 我大部分时间用来读书。
Most of the people are aware of it. 大部分人都知道它。
Some of the sugar was spilled on the floor. 一些糖散落在地上。
Some of the apples were spilled on the floor. 一些苹果散落在地上。
(10)两个主语,一个肯定,一个否定,谓语动词与肯定主语相一致。
The parents, and not the son, were missing.失踪者不是儿子,而是他的双亲。

3、邻近原则
邻近原则是指谓语动词要与它最邻近的名词或代词保持人称与数的一致。
Neither he nor I am a student. 他和我都不是学生。
There is a pen , two chairs and a desk. 有一支钢笔,两把椅子和一张桌子。
这主要有以下几种情况。
(1)由or,either…or等连接的并列结构作主语
由or、either…or、nor、neither…nor、not only…but also、not…but连接的并列主语,通常按照就近一致原则,谓语动词的单、复数形式依照靠近它的主语而定。
Either you or the headmaster is to hand out the prizes to these gifted students at the meeting.要么你要么校长在会议上对这些天才的学生颁奖。
Neither he nor I have finished the experiment. 他和我都没有做完试验。
Either his friends or his brother is wrong. 不是他的朋友们错了,就是他哥哥错了。
Not only I but also Jane and Mary are tired of having one examination after another.不仅我而且简和玛丽都讨厌一个接一个的考试。
Not only the teacher but also his students have studied the question. 不仅老师而且他的学生们都研究了这个问题。
(2)在主谓倒装句时
在主谓倒装句中,主语并列,谓语动词的人称和数与最近的主语相一致。由here或there引导的句子,若有并列主语,谓语也与最靠近的那个主语一致。
There is a desk, a table and three chairs in the room. 房间里有一张书桌、一张饭桌和3把椅子。
There are three chairs, a desk and a computer in the room. 房间里有3把椅子、一张书桌和一台电脑。
Where is your wife and children to stay while you are away?你不在时妻子和孩子呆在哪儿?

"表里不一"现象:
主谓一致中的"表里不一"现象
和主语必须在人称和数上保持一致,最基本的原则是:单数主语用单数动词,复数主语用复数动词.但在实际使用当中情况比较复杂,现在学生常犯的主谓一致错误归纳整理如下
1,"more than one +名词"作主语时,谓语动词常用单数.例如:
More than one teacher gets the flowers. 不止一个教师得到了花.
2,"many a +名词"作主语时,从意义上看是复数,但谓语动词常用单数.例如:
Many a student has been sent to plant trees. 很多学生被派去植树.
3,"half of,the rest of,most of,all of及百分数或分数+of 等后接名词"作主语时,谓语动词形式根据of后的名词而定.例如:
Three fourths of the surface of the earth is covered with water.地球表面四分之三为水所覆盖.
4,all指人时,动词用复数;all指物时,动词用单数.例如:
"All are present and all is going well." 所有人全部到场了,一切进展顺利
5,what引导的主语从句,谓语动词可视表语而定:表语是单数名词时,动词用单数,相反,则用复数.例如:
What they want to get are a number of good books.他们想得到的是大量的好书.
6,and连接的两个单数名词前若用each,every,no修饰,该名词短语作主语时,谓语动词用单数形式.例如:
No book and no pen is found in the schoolbag.书包里没有书和钢笔.
7,当主语后面有as well as,with,along with,together with,but,like,rather than,except,逗号加and连接几个名字等引导的短语时,谓语动词要与最前面的主语保持一致.例如:
My father as well as his workmates has been to Beijing. 我父亲和他的同事曾去过北京.
8,each作主语的同位语时,谓语动词由主语来决定,与each无关.例如:
They each have a bike. 他们每人有一辆自行车.
9,动词不定式,动词-ing形式短语作主语时,谓语动词常用单数.例如:
Going out for a walk after supper is a good habit.晚饭后出去散步是一个好习惯.
10,the following作主语时,谓语动词的数与后面名词的数保持一致.例如:
The following are good examples下面是一些好例子.
11,以-ics结尾的学科名词,如politics,physics,mathematics等作主语时,谓语动词用单数.以-s结尾的名词news,works,plastics等同属此类.例如:
Politics is now taught in all schools. 现在各学校都开设政治课.
当以-ics结尾的学科名词表示"学科"以外的意义时,用作复数,如:mathematics(运算能力)politics(政治观点)economics(经济意义)等
12,有些用来表示由两个对应部分组成一体的名词复数(trousers,glasses,shoes.shorts.scissors.scales等)作主语时,前面若有"一条","一副","一把"之类的单位词,动词用单数;若没有单位词或单位词是复数,则谓语动词用复数.例如:
The shoes are all right. 这些鞋子都很合适.
还有一些以-s结尾的名词通常用复数:arms(武器).clothes.contents.minites(记录).remains(遗体).thanks等
13,"one and a half +名词"作主语时,谓语动词要用复数.例如:
One and a half apples are left on the table. 桌子上有一个半苹果.
14,"One or two more +复数名词"作主语时,谓语动词用复数.例如:
One or two persons are sent there to help them do the work. 要派一两个人到那儿去给他们帮忙.
15,"one of+复数名词+ 定语从句"结构中,定语从句的谓语动词要用复数;而在"the only one of +复数名词+定语从句"的结构中,"the one of + 复数名词+定语从句"定语从句的谓语动词要用单数.例如:
He is one of the students who get there on time.他是准时到达那里的学生之一.
16,表示时间,距离,金钱等的复数名词作主语表达一个整体概念时,谓语动词常用单数,但若强调数量,谓语动词可用复数.例如:
One million dollars is a lot of money. 一百万美元是一大笔钱.


以-s结尾的名词作主语的主谓一致:
英语可数名词的规则复数形式是在词尾加-s或-es,但是有一些以-s结尾的名词并不是可数名词。
它们用法多样,造成了实际使用上的困难,以下详述了以-s结尾的名词作主语的主谓一致问题。
(一)以-s结尾的疾病名称作主语的主谓一致问题
(二)以-s结尾的游戏名称作主语的主谓一致问题
(三)以-s结尾的地理名称作主语的主谓一致问题
(四)以-ics结尾的学科名称作主语的主谓一致问题
(五)其它以-s结尾的名词的主谓一致问题

集合名词的主谓一致原则:

集合名词作主语时,主谓一致关系是一个较为复杂的问题.对此类问题我们可以从"数"的角度分为四类.
1)单数—复数型.凡是有复数词尾变化形式的集合名词都属于此类。如:
a class—classes; a family—families; a government—governments; an army—armies; a people—peoples; a group—groups; a crowd—crowds; a crew—crews等。
这类集合名词强调的是整体性,即当作一个整体或多个整体来看待。属于这类集合名词的单数作主语时,谓语动词用单数;
复数形式作主语时,谓语动词用复数。
【例如】
A big crowd often gathers on the square every morning.
每个上午 一大群人经常聚集在广场上
The government has decided to pass the bill.
政府已决定通过这一法案
There are huge crowds in the streets on Sunday.
星期天有大群大群的人在街上。
There are many English-speaking peoples in the world.
在世界上有许多讲英语的人
但应注意,这类集合名词的单数形式有时表示复数概念,所以这些集合名词的单数形式也可归为"单复同形型"中.
2)单数型.这类集合名词表示的是人或事物的整体,即把这类人或事物的全部包括在内,所以只有单数形式.如作主语,谓语动词常用单数。
这类名词常见的有:humanity,mankind,proletariat等.
【例如】The proletariat is the greatest class in the history of mankind. In the fields of production and scientific experiment,mankind makes constant progress.
3)复数型.这类集合名词在形式和内容上是相互矛盾的,就是说它们只有单数形式,但表达的都是复数概念。它强调的是集体中的个体性.这类名词有:police,cattle,faculty,flock,machinery,vermin,personnel等.它们作主语时,谓语动词要用复数.
【例如】The police have caught the murder.
Our personnel are very highly trained.
The vermin are very dangerous.
4)单复同形型.这类集合名词的单数形式既可表示单数也可表示复数.作主语时,用单数动词或复数动词均可,有时意义区别不大.
【例如】The school teaching staff are (is) excellent.
The public is (are) requested not to litter in the park.
The teaching profession claim(s) to be badly paid.
这类集合名词常见的有:class,family,team,crew,board,herd,committee,party,jury,enemy,audience等.
根据说话人的心理意向若把这个集合名词所代表的人或事物看作一个整体,就认为是单数,用单数动词;
若把它所代表的人或事物看作若干个个体的话,就认为其为复数,用复数动词。
试比较:The football team is playing well.
那个足球队打得非常漂亮.
The football team are shavings bath and are then coming back here for tea. 足球队员们正在洗澡,然后来这里吃茶点。
The family is a very happy one.那个家庭是一个非常幸福的家庭。
That family are very pleased about the news of William's success. 全家人对威廉的成功都感到很高兴。

巧记主谓一致原则:
单单复复最常见,集体名词谓用单,如若强调其成员,复数谓语记心间。
有些名词谓常复,people,police即这般。主语单数后接介,谓语单数介无关,
many a作主语也如此,谓语动词应用单。or、nor、but also、there be,近主原则挂嘴边。
关系代词定主语,谓语根据先行词判。不定式短语、动名词,主语从句谓全单。
时间、货币与距离,谓语多单复少见,rest,means,fol1owing等,意义决定其复、单。
none,all,half of等,of之宾语定答案。还有分数、百分数,仍据of之宾定复、单。
代词all指人谓复数,all指事情谓用单。量词用法请注意,谓语要随量词变。
and连接两名词,身兼两职一定冠,no,each,every后单名,两件(种)事(物)系一概念,
以上情况请记清,谓语动词全用单。形容词带the一类人,姓氏复数加定冠,
-s结尾的海峡、山脉与群岛,谓语用复勿用单。neither,either,each,用作主语谓全单。