首先解释一下在定语从句中引导词前面的词叫先行词,先行词为名词或为代词的是定语从句。

例：The boy who won the competition is Tom

在此句中boy为先行词，who为引导词，主句为两部分1.the boy

2 is Tom

且定语从句没有固定的时态（如宾语从句的主过从过），主要是根据句意或遵循主从句时态一致。

在定语从句中从句是修饰先行词的。

谁能详细介绍英语定语从句知识（谢谢）

#英语资源# 导语定语从句作为英语语法，在学习过程中属于中较难理解与掌握的部分，也正是由于其复杂程度较高、逻辑性较强、理解难度很大，屡屡让同学们在考试中丢分数、失信心、丧斗志！以下内容由 ！

定语从句“三要素”

1.先行词：被定语从句所修饰的名词或代词

①指人的先行词

②指物的先行词

先行词还可以是前面整个句子所叙述的事情。

He has passed the driving test, whichsurprises all of us. (which替代前面所叙述的事情) 先行词

2.关系词：引导定语的词

(1)关系词的作用

①替代前面的先行词（替代作用）

②连接主句和定语从句（连接作用）

③在定语从句中作句子成分（成分作用）

(2)关系词的分类

①标准：根据关系词在从句中做的句子成分种类

②关系代词：在从句中做 主，宾，表，定（that/which/who/whom/whose/as）

③关系副词：在从句中作状语(When/where/why)

3.定语从句：用来做定语，修饰限定先行词的句子

定语从句的分类

1.限制性定语从句：对先行词起限定修饰作用。

He is a teacher whoworks at our school.

2.非限制性定语从句：对先行词起补充说明作用(先行词与定语从句之间有逗号隔开)

Beijing, whichis the capital of China, is a beautiful city with a long history.

比较：

He has two sons, who work in the same company.

(He has only two sons.)

He has two sons who work in the same company.

(Perhaps he has two more sons)

定语从句的10个难点

1.关系代词的省略(限定性定语从句)

(1)关系代词在定语从句中作宾语

She is the girl (whom / that) I loved before. (可以省略whom/that)

(2)关系代词在定语从句中作表语

He is no longer the boy (that) he used to be. (可以省略that)

(3)关系代词作介词宾语，介词在从句句尾时可以省略

Housing price is a problem (that/which) people are interested in.

比较：

Housing price is a problem in whichpeople are interested.（此时只能用which且不能省略）

2.先行词是人(that/who的区别)

(1)用that的情况

①以疑问词who开头的句子中

Who is the man thatis shouting there?

②关系代词在从句中作表语时

She is not the girl thatshe used to be.

③先行词被the very, the right, the only修饰

This is the very person thatwe are looking for.

(2)用who的情况

①先行词是one, ones, anybody, all, none, those 等

Those whowant to go to the cinemawill have to wait at the gate of the school.

②句子中有两个定语从句,一个用了that,另外一个用who

Who is the boy thatwon the gold medal?

③在there be 结构中

There are many young men whoare against him.

④在非限定性定语从句当中

Tom, whois my best friend,has gone abroad to study.

3.先行词是物(that / which的区别)

(1)用which的情况

①在非限定性定语从句中

She lost the game, whichdepressed her greatly.

②关系词置于介词之后，作宾语

The pen with whichyou writeis Jack’s.

③先行词是that或定语从句中套定语从句,一个关系词用that,另一个用which.

Let me show you the novel thatI borrowed from the librarywhichis newly open to us.

(2)用that的情况

①先行词是不定代词如all, little, few, much,anything, everything, nothing, none, no one等

She did all thatshe couldto help us.

②先行词被all, every, no, some, little, much, the only, he very, the right，the last等所修饰时

This is the very book thatI want.

③先行词中既有人又有物时

She described in her compositions the people and he places thatimpressed her most.

④先行词前有序数词或形容词*高级修饰时

This is the best book thatI have ever read.

This is the first film thatI’ve seensince I came here.

⑤定语从句中套定语从句，其中一个关系词以用which, 另外一个用that

He built a factory whichproduced thingsthathad never been seen before.

⑥当主句的主语是疑问词which,另一个用that

Who is the person thatis standing at the gate?

4.As引导定语从句用法

(1)As 既可以引导限制性定语从句也可以用于非限定性定句中充当主语，宾语，表语等。

常用于以下句型当中：Such/so….. as…. 像…..一样 the same …. as… 和…...同样的

A computer is souseful a machine aswe can use everyday.

He is not the sameman ashe was.

(2)引导非限制性定语从句，此时译为“正如，像”等。 可以放在句首，句中或句末。

As I remember, there were a net bar here.

Taiwan is an inseparable part of China, as is known to all.

the same as...和the same that...引导定语从句的区别

This is the samebike thatI lost yesterday.(同一事物)

This is the samebike asI lost yesterday. （同类事物）

5.关系副词的运用

(1)When 在定语从句中做时间状语，先行词为表示时间的time, day等

I still remember the day whenI first came to Beijing. (when=on which)

(2)Where 在定语从句中做地点状语，先行词为表地点的place, spot等

Can you tell me the office wherehe works?

(where = in which)

(3)Why 在定语从句中做原因状语，先行词只有reason.

I don’t want to listen to any reason whyyou were absent.

(why = for which)

关系副词 = 相应的介词 + 关系代词

Where引导的定语从句还可以修饰抽象空间的名词如case(情形)，situation, position(位置),stage (阶段)，point（地步）等

What are the situations wherebody languageis the only form of communication?

在哪些情况下身体语言是的沟通方式。(此时where = in which)

6.几个特殊的先行词

(1)way在定语从句中做状语时的三种引导方式 that / in which / 不填

The way in which / that / 不填he explains the sentence to us is quite simple.

比较：The way which /that/不填 he told to us was quite simple.

way在定语中作tell的宾语

(2)先行词time

time表示“次数”时，用关系代词that引导定语从句

This is the first time thatthe president has visited the country.

time作“一段时间” 讲时，应用关系副词when

This was the time whenthere were no radios, no telephones or no TV sets

此时when = during which 在..期间

(3)先行词reason当在定语从句中作状语时，定语从句的4种引导方式 why/for which/that/不填

This is the reason why/for which/that/不填he can not come here.

比较：Is this the reason that/which/不填he explained to us for his absence from the conference.

reason 在定语从句中做explain的宾语

7.介词+关系代词

该结构的关系代词只有两种即 介词+which（指物） 介词+whom（指人）

该结构介词的选用原则：

(1)根据定语从句中谓语动词的习惯搭配

This is the book on whichI spent $ 8.

This is the book for whichI paid $ 8.

(2)根据先行词的搭配习惯

I remember the days during whichI lived there.

I remember the day on whichI graduated from university.

(3)根据整个句子所表达的意思来决定

The colorless gas without whichwe can’t live is called oxygen.

(4)英语中为了强调某一名词，不定式前面也可以加上关系代词。

Here is the money with which to buy the piano.

She is the right person on whom to depend

注意：

①如果介词后移，关系代词可以省略

The person (whom/who/that) you will write to is Todd.

②有些含有介词的动词短语介词不能提前如look for/after; take care of; send for; hear from/of/about deal with等

This is the baby that you will look after.

8.定语从句的主谓一致

(1)当先行词是 one of + 复数名词，定语从句的位于动词要用复数形式

The Great Wall is one of the world-famous buildings thatdraw lots of visitor every year.

(2)当先行词是 the only + one of +复数名词，从句谓语用单数形式

The Great Wall is the only one of the buildings on the earth thatis seen from the moon.

(3)先行词如果是整个句子，定语从句的谓语动词用单数

Great changes have taken place in China, asis known to all.

He has passed the driving test, whichsurprises all of us.

9.定语从句的转化

定语从句可以转换为 –ing或-ed形式

The girl (who is) dancing nowjust returned from Taiwan.

I love the stories (which were) written by Hemingway.

The man (who stands) standing thereis my friend.

10.定语从句的解题方法

(1)判断从句是否为定语从句 （先行词，关系词，定语从句）

(2)准确判断先行词在定语从句中的成分(主、宾、表、定、状)从而正确选定使用关系代词或关系副词

注意：

①关系代词whose的用法。Whose在定语从句中做定语。

当先行词是人： whose = the + 名词 + of whom

当先行词是物：whose = the + 名词 + of which

Do you know the boy whose parents / the parents of whom are on holiday?

I’d like a room whose window / the window of which faces the sea.

②That引导定语从句，名词性从句 和 强调句型的区别:

定语从句中的that: 关系代词，在后面的定语从句中做句子成分。

名词性从句中的that：从属连词，只起连接主从句的作用，在从句中不做句子成分。

强调句中的that, 运用于it is/was…that..结构；判断标准：去掉强调句型结构，成分仍然完整。

比较：

This is the book that I am looking for.

(that 引导定语从句)

It is at Bashu middle school that I have studied for three years.

(that和前面的it is构成强调句型)

The fact that he stole the money surprised all of us.

(that 引导名词性从句--同位语从句)

That he will come to the conference has excited all of us.

(that引导名词性从句--主语从句)

We all expect that they win, for members of their team are stronger.

(that引导名词性从句--宾语从句)

The reason for your failure is that you lack confidence in yourself.

(that 引导名词性从句--表语从句)

定语从句专项练习

把下列每对句子合并成含有定语从句的主从复合句

1.The fan is on the desk. You want it.

2. The man is in the next room. He brought our textbooks here yesterday.

3. The magazine is mine. He has taken it away.

4.The students will not pass the exam . They don’t study hard.

5. The woman is our geography teacher. You saw her in the park.

6. The letter is from my sister. I received it yesterday.

7. The play was wonderful. We saw it last night.

8. The train was late. It was going to Nanning.

9. The boy is my brother. He was here a minute ago.

10. The tree is quite tall. He is climbing it.

11. Here is the girl. Her brother works in this shop.

12. That’s the child. We were looking at his drawing just now.

13.This is the boy. His sister is a famous singer.

14.I want to talk to the boys. Their homework haven’t been handed in.

15. Is that the woman? Her daughter is in my class.

16. He used to live in a big house. In front of it grew many banana trees.

17. They passed a factory. At the back of the factory there were rice fields.

18. The soldier ran to the building. On the top of it flew a flag.

19.In the evening they arrived at a hill. At the foot of the hill there was a temple.

20. She came into a big room. In the middle of it stood a large table.

定语从句是由关系代词和关系副词引导的从句，其作用是作定语修饰主句的某个成分，定语从句分为限定性和非限定性从句两种。状语从句分为时间状语从句，结果状语从句，让步状语从句，原因状语从句，条件状语从句以及行为方式状语从句。名词从句包括主语从句，宾语从句，表语从句和同位语从句及there be句型。 一、 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 二、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 三、定语从句结构错误 1. 缺关系词 2. 从句中缺成分 摘自《简明英语语法》 在英文中，有两种定语从句：限定性定语从句与非限定性定语从句。这两种定语从句在其功能和形式方面都有明显的区别： 限定性定语从句限定性定语从句与主句的关系很紧奏，对其先行词起限定、修饰的作用。如果将其去掉，会影响句子意思的完整性；有时甚至于引起费解、误解。例如： Rainforests are being cleared for valuable timber and other resources to speed up the economic growth of the nationsin which they are located . 为了加速他们各自所在国家的经济发展，热带雨林作为有价值的原木和其他资源正为人们所砍伐。 Ocean currents affect the climates of the lands near which they flow. 洋流影响其流经的附近地区的气候。 They explained the reason to us why they had hated us before. 他们向我们解释为什么他们不喜欢我们的原因。 非限定性定语从句非限定性定语从句在形式上就与主句很松散，它与主句之间有一个逗点"，"隔开；它对其先行词没有限定、修饰的作用，只起补充、说明的作用。有时也用它来对全句进行补充、说明。即使将其去掉，也不会影响句子意思。由于上述原因，非限定性定语从句在表达意思方面也有别于限定性定语从句。另外，非限定性定语从句在中文译文里，我们往往将其作为一个分句处理，而不把它作定语翻译。 例如： Earlier , the Babylonians had attempted to map the world , but they presented it in the form of a flattened disc rather than a sphere , which was the form adopted by Ptolemy . （此句中，非限定性定语从句是对先行词a sphere进行补充、说明。） 更早之前，巴比伦人曾试图绘制世界地图，但是他们把它绘制成平盘状而不是托勒密所采用的球体状。 The combination of satellites, which transmit information , computers , which store information , and television , which displays information , will change every home into an education and entertainment center . （此句中，三个非限定性定语从句分别对三个先行词：satellites ，computers和television进行补充、说明。如果去掉这三个非限定性定语从句，那么句子可简化为： The combination of satellites , computers and television will change every home into an education and entertainment center .）卫星能传输信息，计算机能储存信息，电视能显示信息，把这些手段结合起来可以使每个家庭都成为教育娱乐的中心。 The sun heats the earth , which makes it possible for plants to grow .（此句中，非限定性定语从句是对全句进行补充、说明,将全句表达的意思看成"一件事情）。太阳给予大地热，这就使植物的生长成为可能。 The old man has a son , who is in the army .（此句中，非限定性定语从句是对先行词son进行补充、说明。但本句所传达的信息是："这位老人只有一个儿子" 。如果将此句改写成限定性定语从句： The old man has a son who is in the army . 那位老人有一个在部队工作的儿子。那么，限定性定语从句就要对先行词son进行限定、修饰。这样一来，句子所传达的信息就变成了："这位老人有一个儿子在部队工作，还有其他的儿子在干别的工作"。）那位老人有一个儿子，他在部队工作。 二、定语从句用法详细讲解 定语从句是由关系代词和关系副词引导的从句，其作用是作定语修饰主句的某个成分，定语从句分为限定性和非限定性从句两种。状语从句分为时间状语从句，结果状语从句，让步状语从句，原因状语从句，条件状语从句以及行为方式状语从句。名词从句包括主语从句，宾语从句，表语从句和同位语从句及there be句型。 三、初中定语从句的讲解与练习 定语从句（Attributive Clauses）在句中做定语，修饰一个名词或代词，被修饰的名词,词组或代词即先行词。定语从句通常出现在先行词之后，由关系词（关系代词或关系副词）引出。 关系代词有：who, whom, whose, that, which等。 关系副词有：when, where, why等。 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。 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。

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