高考考的从句-从句在高考中占多少分

1.高考英语语法:高中英语语法-定语从句的种类和用法

2.名词性从句简析

3.高考英语作文好的词组，好的句子（语法的，从句）

4.高考题型中定语从句 名词性从句 如何区分

高考英语语法:高中英语语法-定语从句的种类和用法

《高中英语语法-定语从句的种类和用法》由liuxue86.com我整理。本内容整理时间为05月12日，如有任何问题请联系我们。

定语从句的种类和用法

用来说明主句中某一名词或代词（有时也可说明整个主句或主句中一部分）而起定语作用的句子叫作定语从句。

一、关系代词引导的定语从句

1. 关系代词用来指代先行词是人或物的名词或代词

句子成分 用于限制从句或非限制性从句 只用于限制性从句

代替人 代替物代替人或物

主语 Who which that

主语 Whomwhich that

宾语 Whose（=of whom） whose（=of which）

例1：This is the detective who came from London.

例2：The book which I am reading is written by Tomas Hardy.

例3：The desk whose leg is broken is very old.

例4：This is the room that Shakespeare was born in.

2.关系代词的用法

（1）如果先行词是all，much，anything，something，nothing，everything，little，none等不定代词，关系代词一般只用that，不用which.例如：

All the people that are present burst into tears.

（2）如果先等词被形容词最高级以及first，last，any，only，few，mush，no，some，very等词修饰，关系代词常用that，不用which，who，或whom.例如：

（3）非限制性定语从句中，不能用关系代词that，作宾语用的关系代词也不能省略。例如：

There are about seven million people taking part in the election，most of whom、are well educated.

（4）which还有一种特殊用法，它可以引导从句修饰前面的整个主句，代替主句所表示的整体概念或部分概念。在这种从句中，which可以作主语，也可以作宾语或表语，多数情况下意思是与and this 相似，并可以指人。例如：

He succeeded in the competition，which made his parents very happy.

（5）that可指人或物，在从句中作表语，（指人作主语时多用who）仅用于限制性定语从句中。

（6）which可作表语，既可指人，以可指物。指人时，一般指从事某种职业或是有种特征。品性或才能的人。Which引导的定语从句可以限制性的，也可以是非限制性的。

（7）如果作先作词的集体名词着眼于集体的整体，关系代词用which；若是指集体中的各个成员，则用who.

（8）先行词有两个，一个指人，一个指物，关系代词应该用that.例如：

The boy and the dog that are in the picture are very lovely.

（9）如果先行词是anyone，anybody，everyone，everybody，someone，somebody，关系代词应该用 who 或whom，不用which.例如：

Is there anyone here who will go with you？

3.?介词＋关系代词?是一个普遍使用的结构

（1）?介词＋关系代词?可以引导限制性定语从句，也可以引导非限制性定语从句。?介词＋关系代词?结构中的介词可以是 in，on，about，from，for，with，to at，of，without 等，关系代词只可用whom或 which，不可用that .

（2）from where为?介词＋关系副词?结构，但也可以引导定语从句。例如：

We stood at the top of the hill，from where we can see the town?

（3）像listen to，look at，depend on，pay attention to，take care of等固定短语动词，在定语从句中一般不宜将介词与动词分开。例如：

This is the boy whom she has taken care of.

二、关系副词引导的定语从句

1.关系副词也可以引导定语从句

关系副词在从句中分别表示时间。地点或原因。关系副词when在从句中充当时间状语，where 充当地点状语，why充当原因状语。

2. that可引导定语从句表示时间。地点或原因

That有时可以代替关系副词 when，where 或者why引导定语从句表示时间。地点或原因，在 that引导的这种定语从句中，that也可以省去。

三、限制性定语从句与非限制性定语从句

1.二者差异比较

限制定语从句紧跟先行词，同先行词这间一般不加逗号，仅修饰先行词，可以由关系代词。关系副词或that来引导。非限制性定语从句仅作补充或说明，用逗号与主句隔开，既可修饰先行词，又可修饰整个主句，不可用that引导。

2.关系代词和关系副词的选择依据

（1） 弄清代替先行词的关系词在从句中作什么成分，作状语的应选用关系副词，作主语。宾语或表语的可选用关系代词。

3.先行词与定语从句隔离

定语从句一般紧跟在先行词之后，但定语从句与先行词之间有时也会插入别的成分，构成先行词与定语从句的隔离。例如：

1）This is the article written by him that Is poke to you about

2）He was the only person in this country who was invited

四、As在定语从句中的用法

1. 引导限制性定语从句和非限制性定语从句

（1）as多与such 或the same连用，可以代替先行词是人或物的名词。

（2）as 也可单独使用，引导非限制性定语从句，作用相当于which.例如：

The elephant's nose is like a snake，as anybody can see.

（3）the same? that与 the same ?as在意思上是不同的。

2.As引导的非限制性定语从句的位置

as引导的非限制性定语从句位置较灵活，可以位于主句前面。中间或后面，一般用逗号与主句隔开，但which所引导的非限制性定语从句只能放在主句之后。例如：

（1）As is expected，the England team won the football match.

（2）The earth runs around the sun，as is known by everyone. 《高中英语语法-定语从句的种类和用法》由liuxue86.com我整理

名词性从句简析

在句子中起名词作用的句子叫名词从句 (Noun Clauses）。 名词从句的功能相当于名词词组, 它在复合句中能担任主语、宾语、表语、同位语、介词宾语等，因此根据它在句中不同的语法功能，名词从句又可分别称为主语从句、宾语从句、表语从句和同位语从句。

一、高考焦点指南在复合句中起名词作用的从句叫做名词性从句。它包括主语从句、宾语从句、表语从句和同位语从句。名词性从句是中学阶段的一个重要语法项目，在历年的高考中几乎都涉及到，并且每年的命题各有变化。分析历届高考试题名词性从句考查的焦点主要有以下六个方面

1. 考查名词性从句的语序问题

高考真题例示：

例1. The photographs will show you ____．（MET1989）

A. what does our village look like B. what our village looks like

C. how does our village look like D. how our village looks like

例2. Someone is ringing the doorbell. Go and see ___________. (NMET2000)

A. who is he B. who he is C. who is it D. who it is

例3. Can you make sure ______ the gold ring? (NMET1990)

A. where Alice had put B. where did Alice put

C. where Alice has put D. where has Alice put

例4. He asked ________ for the violin. (NMET1991)

A. did I pay how much B. I paid how much

C. how much did I pay D. how much I paid

2. 考查引导词that与what的区别

高考真题例示：

例1. ______we can’t get seems better than ______we have. (NMET1996)

A. What; what B. What; that C. That; that D. That; what

例2. No one can be sure _____ in a million years. (MET1991)

A. what man will look like B. what will man look like

C. man will look like what D. what look will man like

例3. _______ you have done might do harm to other people. (MET 1987)

A. That B. What C. Whether D. How

例4. _______ you don't like him is none of my business. (上海1992)

A. What B. Who C. That D. Whether

3. 考查it在名词性从句中作形式主语或形式宾语的用法

高考真题例示：

例1. _____ is a fact that English is being accepted as an international language. (NMET1995)

A. There B. This C. That D. It

例2. It worried her a bit ______her hair was turning grey.

A. while B. if C. that D. for

例3. I hate _____when people talk with their mouths full. (NMET1998)

A. it B. that C. this D. them

例4. Does _______ matter if he can't finish the job on time? (MET 1991)

A. this B. that C. he D. it

4. 考查whether与if的区别

高考真题例示：

例1. _____we’ll go camping tomorrow depends on the weather. (NMET1996)

A. If B. Whether C. That D. Where

例2. What the doctors really doubt is _____my mother will recover from the serious disease soon. (上海2001)

A. when B. how C. whether D. why

例3. _____ the 2000 Olympic Games will be held in Beijing is not known yet. (MET1992)

A. Whenever B. If C. Whether D. That

5. 考查名词性从句中的疑问词+ever引导的名词性从句与no matter+疑问词引导的状语从句的区别

高考真题例示：

例1. It is generally considered unwise to give a child _____he or she wants. (NMET1997)

A. however B. whatever C. whichever D. whenever

例2. ______leaves the room last ought to turn off the lights. (MET1988)

A. Anyone B. The person C. Whoever D. Who

例3. Sarah hopes to become a friend of ______shares her interests. (上海1995)

A. anyone B. whomever C. whoever D. no matter who

6. 考查名词性从句的虚拟语气问题

高考真题例示：

例1：It is necessary that a college student ______at least a foreign language. (上海1993)

A. masters B. should master C. mastered D. will master

二、语法要点剖析

一、名词性从句

主语从句、表语从句、宾语从句、同位语从句，在整个句子中所起的作用，相当于一个名词。因此，这四种从句通称为名词性从句。

引导名词性从句的连接词可分为三类：

连接词：that, whether, if （不充当从句的任何成分）

连接代词：what, whatever, who, whoever, whom, whose, which.

连接副词：when, where, how, why

1. 主语从句

作句子主语的从句叫主语从句。主语从句通常由从属连词that，whether，if和连接代词what，who，which，whatever， whoever以及连接副词how，when，where，why等词引导。that在句中无词义，只起连接作用；连接代词和连接副词在句中既保留自己的疑问含义、又起连接作用，在从句中充当从句的成分。例如：

What he wants to tell us is not clear. 他要跟我们说什么，还不清楚。

Who will win the match is still unknown. 谁能赢得这场比赛还不得而知。

It is known to us how he became a writer. 我们都知道他是如何成为一名作家的。

Where the English evening will be held has not yet been announced. 英语晚会将在哪里举行，还没有宣布。

有时为避免句子头重脚轻，常用形式主语it代替主语从句作形式主语放于句首，而把主语从句置于句末。主语从句后的谓语动词一般用单数形式。常用句型如下：

（1）?It + be + 名词 + that从句

（2）It + be + 形容词 + that从句

（3）It + be + 动词的过去分词 + that从句

（4）It + 不及物动词 + that 从句

另注意在主语从句中用来表示惊奇、不相信、惋惜、理应如此等语气时，谓语动词要用虚拟语气“(should) +do”，常用的句型有：

It is necessary (important, natural, strange, etc.) that …

It is a pity (a shame, no wonder, etc.) that…

It is suggested (requested, proposed, desired, etc.) that…

2. 宾语从句

名词句用作宾语的从句叫宾语从句。引导宾语从句的关联词与引导主语从句表语从句的关联词大致一样，在句中可以作谓语动词或介词及非谓语动词的宾语。

1. 由连接词that引导的宾语从句

由连接词that引导宾语从句时，that在句中不担任任何成分，在口语或非正式的文体中常被省去，但如从句是并列句时,第二个分句前的that不可省。例如：

He has told me that he will go to Shanghai tomorrow. 他已经告诉我他明天要去上海。

We must never think (that) we are good in everything while others are good in nothing. 我们决不能认为自己什么都好，别人什么都不好。

注意：在demand、order、suggest、decide、insist, desire, demand, request, command等表示要求、命令、建议、决定等意义的动词后，宾语从句常用“（should）+ 动词原形”。例如：

I insist that she (should) do her work alone. 我坚持要她自己工作。

The commander ordered that troops (should) set off at once. 司令员命令部队马上出发。

2. 用who，whom, which, whose, what, when, where, why, how, whoever, whatever, whichever等关联词引导的宾语从句相当于特殊疑问句，应注意句子语序要用陈述语序。例如：

I want to know what he has told you. 我想知道他告诉了你什么。

She always thinks of how she can work well. 她总是在想怎样能把工作做好。

She will give whoever needs help a warm support. 凡需要帮助的人，她都会给予热情的支持。

3. 用whether或if引导的宾语从句，其主语和谓语的顺序也不能颠倒，仍保持陈述句语序。此外，whether与if 在作“是否”的意思讲时在下列情况下一般只能用whether，不用if：

a. 引导主语从句并在句首时；b. 引导表语从句时；c . 引导从句作介词宾语时；d. 从句后有“or not”时；e. 后接动词不定式时。例如：

Whether there is life on the moon is an interesting question. 月球上有没有生命是个有趣的问题。

The question is whether she should have a low opinion of the test?

Everything depends on whether we have enough money. 一切要看我们是否有足够的钱。

I wonder whether he will come or not. 我想知道他来还是不来。

Can you tell me whether to go or to stay? 你能否告诉我是去还是留？

4. 注意宾语从句中的时态呼应，当主句动词是现在时，从句根据自身的句子情况，而使用

不同时态。例如：

he studies English every day. （从句用一般现在时）

he studied English last term. （从句用一般过去时）

I know (that) he will study English next year. （从句用一般将来时）

he has studied English since 1998. （从句用现在完成时）

当主句动词是过去时态（could, would除外），从句则要用相应的过去时态，如一般过去时，过去进行时，过去将来时等；当从句表示的是客观真理，科学原理，自然现象，则从句仍用现在时态。例如：

The teacher told us that Tom had left us for America．

5. think, believe, imagine, suppose等等动词引起的否定性宾语从句中，要把上述主句中的动词变为否定式。即将从句中的否定形式移到主句中。例如：

We don’t think you are here. 我们认为你不在这。

I don’t believe he will do so. 我相信他不会这样做。

3. 表语从句

在句中作表语的从句叫表语从句。引导表语从句的关联词与引导主语从句的关联词大致一样，表语从句位于连系动词后，有时用as if引导。其基本结构为：主语 + 系动词 + that从句。例如：

The fact is that we have lost the game. 事实是我们已经输了这场比赛。

That’s just what I want. 这正是我想要的。

This is where our problem lies. 这就是我们的问题所在。

That is why he didn’t come to the meeting. 那就是他为什么不到会的原因。

It looks as if it is going to rain. 看上去天要下雨了。

需要注意的，当主语是reason时，表语从句要用that引导而不是because。例如：

The reason why he was late was that he missed the train by one minute this morning

4. 同位语从句

同位语从句说明其前面的名词的具体内容。同位语从句通常由that引导，可用于同位语从句的名词有advice、demand、doubt、fact、 hope、idea、information、message、news、order、problem、promise、question、 request、suggestion、truth、wish、word等。例如：

The news that we won the game is exciting. 我们赢得这场比赛的消息令人激动。

I have no idea when he will come back home. 我不知道他什么时候回来。

The thought came to him that Mary had probably fallen ill. 他想到可能玛丽生病了。

同位语从句和定语从句的区别：

that作为关系代词，可以引导定语从句，充当句子成分，在从句中作宾语时可以省略； that引导同位语从句时，起连词的作用，没有实际意义，不充当句子成分，一般不能省略。

试比较下面两个例句:

I had no idea that you were here．（that引导同位语从句，不能省略）

Have you got the idea（that）this book gives you of life in ancient Greece？（that引导定语从句，作宾语，可以省略）

三、高考热点透视

1. ___ is a fact that English is being accepted as an international language. (NMET 1995)

A. There B. This C. That D. It

答案D。当名词从句在句中作主语时，为避免句子头重脚轻，常用it作形式主语置于句首，而将真正的主语从句放在句尾。此时it只起先行引导作用，本身无实义。此句也可以改写为：That English is being accepted as an international language is a fact.

2．A computer can only do ____ you have instructed it to do．（NMET2001）

A．how B．after C．what D．when

答案C。从句子结构可知，句子的空白处应该填引导宾语从句的连词，做主句谓语动词do的宾语，同时该连接词还是从句中的do的宾语，因此，此处的连接词应该用what。

3. He asked ____ for a violin．（MET1992）

A. did I pay how much B. I paid how much

C. how much did I pay D. how much I paid

答案：D。宾语从句相当于特殊疑问句，句子语序要用陈述语序。

4. What the doctors really doubt is my mother will recover from the serious disease soon．（上海2001年春季招生）

A. when B. how C. whether D. why

答案C。这是一个表语从句。根据 doubt一词可知，所怀疑的应是是否能治好病，所以要填whether。这句话的意思是“医生真的怀疑我妈妈是否能很快从重病中恢复过来。”

5．It is generally considered unwise to give a child _____he or she wants. (NMET1997)

A. however B. whatever C. whichever D. whenever

答案B。根据句意“一般认为孩子要什么就给什么是不好的。”可以看出后面的从句应是一个宾语从句，而从句中wants缺少宾语，A. however 和D. whenever是不能作宾语的；排除A和D，whichever表示“无论哪一个，无论哪些”，应表示一定范围内的人或物，此处没有涉及事物的范围，所以应选 B．whatever，表示“无论什么”。

6. ______leaves the room last ought to turn off the lights. (MET1988)

A. Anyone B. The person C. Whoever D. Who

答案C。本题句子的意思是：无论谁最后离开房间一定要把灯关掉。本题考查连接代词whoever引导的名词性从句，连接代词whoever可以引导名词性从句，并在从句中作主语，相当于any person who或The person who, 意为“一切……的人”。而anyone和the person均非连词，不能引导从句，况who leaves the room last意为“某个最后离开房间的人”，与题意不符，如果要选A. Anyone或B. The person，都必须在它们后面再加上引导定语从句的关系代词who。如果要选D. Who就体现不出“无论谁”的含义了。

7. Sarah hopes to become a friend of ______shares her interests. (Shanghai1995)

A. anyone B. whomever C. whoever D. no matter who

答案为C。本题句子的意思是：Sarah希望跟自己有共同爱好的人交朋友。疑问词+ever引导的名词性从句与no matter+疑问词引导的从句的区别是：前者既可以引导名词性从句也可以引导让步状语从句；后者只能引导让步状语从句。首先排除A和D，从句中需要的是主语，所以whomever也不行。

8. ---- I drove to Zhuhai for the air show last week.

---- Is that ______ you had a few days off ? ( NMET1999)

A. why B. what C. when D. where

答案A。根据语境，甲说上周驱车去珠海观看航模展览。乙据此来询问甲这是否是请几天假的原因，故答案是A。答案B,C, D均与该题语境不符。根据上句提供的语境，下句应该问“那就是你为什么离开几天的原因吗？”

9. I still remember ______ this used to be a quiet village. ( NMET1993)

A. when B. how C. where D. what

答案A。根据从句中缺少的句子成分是状语，排除D．what，而答案C, D均与题意不符，所以应选A．when。used to be表示一种过去存在的状态，本句的意思是“我仍然记得这里在什么时候是个宁静的地方。”

10．I read about it in some book or other，does it matter ____ it was？（2001春季招生）

A．where B．what C．how D．which

答案D。这是一个主语从句。主语从句中缺少表语。从上句的意思分析，应是哪本书，所以要填which，这句话的意思是“我在某本书中读到过有关这方面的内容，是哪一本书重要吗？”。

11. Information has been put forward ____ more middle school graduates will be admitted into universities.

A. while B. that C when D. as (2001年上海)

答案B。该题考查that引导的同位语从句。同位语从句通常由that引导，接在fact, news, promise, possibility, information, doubt, message名词后，用来解释或说明名词的内容。

12. —I think it is going to be a big problem.

—Yes, it could be.

—I wonder ______ we can do about it. (北京 2002春季)

A、if B、how C、what D、that

答案C。本题考察名词性从句的连接词的用法。wonder后面应跟宾语从句，而从句中的谓语动词do是及物动词，可见从句缺少一个代替宾语的成分，我们可以用排除法排除不作成分的if和that，再排除引导方式状语的how，答案是C，句子的意思是“我们能就此做些什么”。

四、专项考点练习

1. ________that they found an unusual plant in the forest.

A. It is said B. They are said C. It said D. It says

2. _____ caused the accident is still a complete mystery.

A. What B. That C. How D. Where

3. It worried Mary a lot _____ she would pass the college entrance examination.

A. whether B. if C. that D. how

4. Shanghai has taken on a new look. It isn’t like _____ it used to be .

A .what B. how C. that D. which

5. ____ is no possibility ______ Bob will win the first prize in the match.

A. There, that B. It, that C. There, whether D. It, whether

6. Little Tommy was reluctant to tell the schoolmaster ____ he had done the day before.

A .that B. how C .what D. where

7. The old man smiled when he saw how pretty _____ up to be during the past few years.

A. had his daughter grown B. would his daughter grow

C. his daughter would grow D. his daughter had grown

8. Have you seen Mary lately? My boss wants to know _______.

A.?how she is getting along B. how is she getting along

C. what she is getting along D. what is she getting along

9. ____surprised me most was _____such a little girl of seven could play the violin so well.

A.?That; what B. What; that C. That; that D. What; what

10. These wild flowers are so special I would do ______ I can to save them.

A. whatever B. which C. that D. whichever

11. _____ helped to save the drowning girl is worth praising.

A. Who B. Anyone C. Whoever D. The person

12. Eat _____ you like and leave the others for _____ comes in late.

A. any; who B. every; whoever C. whichever; whoever D. either; whoever

13. ____ she couldn’t understand was _____ fewer and fewer students showed interest in her lessons.

A. What; why B. That; why C. What; because D. Why; that

14. It was ____ he said ___ disappointed me.

A. What; that B. That; that C. What; what D. That;what

15. It was ordered that all the soldiers _______to the front.

A. should send B. must be sent C. should be sent D. must go

16. The true value of life is not in ______, but _______.

A. which we get; what give we B. what we get; what we give

C. which do we get; what do we give D. how we get; that we give

17. We are all for your proposal that the discussion _______.

A. be put off B. was put off C. should put off D. is to be put off

18. Go and get your coat．It's ____ you left it．

A. where B. there C. here where D. where there

19. Sarah hopes to become a friend of ______ shares her interests.

A. anyone B. whomever C. whoever D. no matter who

20. You can’t imagine ______ when they received these nice Christmas presents.

A. how they were excited B. how excited they were

C. how excited were they D. they were how excited

Keys: 1---5 A A ABA 6---10 CDABA 11----15 CCAA C 16---20 BAACB

高考英语作文好的词组，好的句子（语法的，从句）

一、~~~ the + ~ est + 名词 + (that) + 主词 + have ever + seen (known/heard/had/read, etc)

~~~ the most + 形容词 + 名词 + (that) + 主词 + have ever + seen (known/heard/had/read, etc)

例句：Helen is the most beautiful girl that I have ever seen.

海伦是我所看过最美丽的女孩。

Mr. Chang is the kindest teacher that I have ever had.

张老师是我曾经遇到最仁慈的教师。

二、Nothing is + ~~~ er than to + V

Nothing is + more + 形容词 + than to + V

例句：Nothing is more important than to receive education.

没有比接受教育更重要的事。

三、 ~~ cannot emphasize the importance of ~~~ too much.

(再怎么强调...的重要性也不为过。)

例句：We cannot emphasize the importance of protecting our eyes too much.

我们再怎么强调保护眼睛的重要性也不为过。

四、There is no denying that + S + V ...(不可否认的...)

例句：There is no denying that the qualities of our living have gone from bad to worse.

不可否认的，我们的生活品质已经每况愈下。

五、It is universally acknowledged that + 句子~~ (全世界都知道...)

例句：It is universally acknowledged that trees are indispensable to us.

全世界都知道树木对我们是不可或缺的。

六、There is no doubt that + 句子~~ (毫无疑问的...)

例句：There is no doubt that our educational system leaves something to be desired.

毫无疑问的我们的教育制度令人不满意。

七、An advantage of ~~~ is that + 句子 (...的优点是...)

例句：An advantage of using the solar energy is that it won‘t create (produce) any pollution.

使用太阳能的优点是它不会制造任何污染。

八、The reason why + 句子 ~~~ is that + 句子 (...的原因是...)

例句：The reason why we have to grow trees is that they can provide us with fresh air.

The reason why we have to grow trees is that they can supply fresh air for us.

我们必须种树的原因是它们能供应我们新鲜的空气。

九、So + 形容词 + be + 主词 + that + 句子 (如此...以致于...)

例句：So precious is time that we can‘t afford to waste it.

时间是如此珍贵，我们经不起浪费它。

十、Adj + as + Subject(主词)+ be, S + V~~~ (虽然...)

例句：Rich as our country is, the qualities of our living are by no means satisfactory.

{by no means = in no way = on no account 一点也不}

虽然我们的国家富有，我们的生活品质绝对令人不满意。

十一、The + ~er + S + V, ~~~ the + ~er + S + V ~~~

The + more + Adj + S + V, ~~~ the + more + Adj + S + V

~~~(愈...愈...)

例句：The harder you work, the more progress you make.

你愈努力，你愈进步。

The more books we read, the more learned we become.

我们书读愈多，我们愈有学问。

十二、By +Ving, ~~ can ~~ (借着...，..能够..)

例句：By taking exercise, we can always stay healthy.

借着做运动，我们能够始终保持健康。

十三、 ~~ enable + Object(受词)+ to + V (..使..能够..)

例句：Listening to music enable us to feel relaxed.

听音乐使我们能够感觉轻松。

十四、On no account can we + V ~~~ (我们绝对不能...)

例句：On no account can we ignore the value of knowledge.

高考题型中定语从句 名词性从句 如何区分

18.1 关系代词引导的定语从句

关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。

1）who, whom, that

这些词代替的先行词是人的名词或代词，在从句中所起作用如下：

Is he the man who/that wants to see you?

他就是你想见的人吗？（who/that在从句中作主语）

He is the man whom/ that I saw yesterday.

他就是我昨天见的那个人。（whom/that在从句中作宾语）

2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换）, 例如：

They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。

Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。

3）which, that

它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：

A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语）

The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语）

18.2 关系副词引导的定语从句

关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。

1）when, where, why

关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"结构交替使用，例如：

There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。

Beijing is the place where (in which) I was born. 北京是我的出生地。

Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗？

2）that代替关系副词

that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如：

His father died the year (that / when / in which) he was born. 他父亲在他出生那年逝世了。

He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。

18.3 判断关系代词与关系副词

方法一： 用关系代词，还是关系副词完全取决于从句中的谓语动词。及物动词后面无宾语，就必须要求用关系代词；而不及物动词则要求用关系副词。例如：

This is the mountain village where I stayed last year.

I'll never forget the days when I worked together with you.

判断改错（注：先显示题，再显示答案，横线；用不同的颜色表示出。）

（错） This is the mountain village where I visited last year.

（错） I will never forget the days when I spent in the countryside.

（对） This is the mountain village (which) I visited last year.

（对） I'll never forget the days (which) I spent in the countryside.

习惯上总把表地点或时间的名词与关系副词 where, when联系在一起。此两题错在关系词的误用上。

方法二： 准确判断先行词在定语从句中的成分(主、谓、宾、定、状)，也能正确选择出关系代词/关系副词。

例1. Is this museum ___ you visited a few days age?

A. where B. that C. on which D. the one

例2. Is this the museum ____ the exhibition was held.

A. where B. that C. on which D. the one

答案：例1 D，例2 A

例1变为肯定句： This museum is ___ you visited a few days ago.

例2变为肯定句： This is the museum ___ the exhibition was held.

在句1中，所缺部分为宾语，而where, that, on which都不能起到宾语的作用，只有the one既做了主句的表语，又可做从句的宾语，可以省略关系代词，所以应选D。

而句2中, 主、谓、宾俱全，从句部分为句子的状语表地点，既可用副词where，又因 in the museum词组，可用介词in + which 引导地点状语。而此题中，介词on 用的不对，所以选A。

关系词的选择依据在从句中所做的成分，先行词在从句中做主、定、宾语时，选择关系代词 (who, whom, that, which, whose)； 先行词在从句中做状语时，应选择关系副词 ( where 地点状语，when 时间状语，why 原因状语) 。

18.4 限制性和非限制性定语从句

1) 定语从句有限制性和非限制性两种。限制性定语从句是先行词不可缺少的部分，去掉它主句意思往往不明确；非限制性定语从句是先行词的附加说明，去掉了也不会影响主句的意思，它与主句之间通常用逗号分开，例如：

This is the house which we bought last month. 这是我们上个月买的那幢房子。（限制性）

The house, which we bought last month, is very nice.这幢房子很漂亮，是我们上个月买的。（非限制性）

2) 当先行词是专有名词或物主代词和指示代词所修饰时，其后的定语从句通常是非限制性的，例如：

Charles Smith, who was my former teacher, retired last year. 查理·史密斯去年退休了，他曾经是我的老师。

My house, which I bought last year, has got a lovely garden. 我去年买的的那幢房子带着个漂亮的花园。

This novel, which I have read three times, is very touching. 这本小说很动人，我已经读了三遍。

3) 非限制性定语从句还能将整个主句作为先行词, 对其进行修饰, 这时从句谓语动词要用第三人称单数，例如：

He seems not to have grasped what I meant, which greatly upsets me. 他似乎没抓住我的意思，这使我心烦。

Liquid water changes to vapor, which is called evaporation. 液态水变为蒸汽，这就叫做蒸发。

说明：关系代词that和关系副词why不能引导非限制性定语从句。