2023年定语从句考点归纳总结 定语从句知识点归纳讲解实用

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。

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。

i. 定语从句起了形容词的作用，在句中修饰一个名词或代词。被修饰的词叫做先行词，引导定语从句的词叫关系词，他的作用一是放在先行词与定语从句中间起了连接作用，二是在从句中担当一个成分，并与先行词保持数的一致。

关系词先行词从句成分

例句

关系代 词who人主语do you know the man who is talking with your mother？whom， which和that在从句中做宾语时，常可以省略，但介词提前时后面关系代词不能省略，也不可以用that

whom人宾语mr. smith is the person with whom i am working

the boy (whom) she loved died in the war..

whose人或物定语i like those books whose topics are about history.

the boy whose father works abroad is my deskmate.

that人或物主语，宾语a plane is a machine that can fly.

she is the pop star (that) i want to see very much.

which物主语，宾语the book (which) i gave you was worth $10.

the picture which was about the accident was terrible.

as人或物主语，宾语he is such a person as is respected by all of us.

this is the same pen as i lost 做宾语一般不省略

关系副 词when时间时间状语i will never forget the day when we met there.可用on which

where地点地点状语this is the house where i was born.可用in which

why原因原因状语i can’t imagine the reason why he turned down my offer.可用for which

ii. that与which， who， whom的用法区别情况用法说明

例句

只用that的情况1.先行词为all， everything， anything， nothing， little， much，等不定代词时

2.先行词被all， any， every， each， much， little， no， some， few等修饰时

3.先行词有形容词最高级和序数词修饰时

4.先行词既指人又指物时

5.先行词被the only， the very修饰时

6.句中已经有who或which时， told me everything that he knows.

the books that you offered has been given out.

is the best film that i have ever read.

talked about the persons and things that we remembered.

is the only man that i want to see.

is the man that is making a speech？

只用which， who， whom的情况1.在非限制性定语从句中，只能用which指代物，用who/whom指人

2.在由“介词+关系代词”引导的定语从句中，只能用which指物，whom指人。

3.先行词本身是that时，关系词用which， 先行词为those， one， he时多用who。

has a son， who has gone abroad for further study.

2.i like the person to whom the teacher is talking.

who respect others are usually respected by others.

iii. as、which和that的区别

从句区别

限制性

定语从句中名词前有such和the same修饰时，关系代词用as，不能用whichhe is not such a fool as he looks.

don’t read such books as you can’t understand.

非限制性

定语从句中as和which都可以指代前面整个主句。如果有“正如，象”的含义，并可以放在主句前，也可以放在后面，那么用as；而which引导的从句只能放主句后，并无“正如”的意思。they won the game， as we had expected.

they won the game， which we hadn’t expected.

as is well known， he is a famous film star in the 1980s.

the same... as和

the same ...thatthe same... as指同类事物

the same ...that 指原物that’s the same tool as i used last week.(同类工具，不是同一把)

that’s the same tool that i used last week.那就是我上周用过的工具。

注意：the way 做先行词时，定语从句可由that， in which 引导或不用引导词。

iv.定语从句与其它从句(句型)的区别

类别区别

定语从句与并列句：定语从句与并列句的主要区别在于：并列句有像and，but，so等并列连词或两个句子用分号连接，这时就不能再用引导定语从句的关系词了。 ①mr li has three daughters，none of _____ is an engineer.

②mr li has three daughters，but none of _____ is a dancer.

从结构上看，①小题是定语从句，故填whom；

②小题有并列连词but，是并列句，故填代词 them。

定语从句与状语从句：定语从句的前面有名词作先行词，而状语从句没有先行词。 this is the place where we used to live a few years ago.

这是几年前我们居住的地方。(定语从句，先行词为the place)

let’s go where we can find a better job.

我们到能找到更好的工作的地方去吧。(地点状语从句)

定语从句修饰、限制、说明名词，只能放在先行词的后面，而状语从句说明动作发生的'情况，并且可以放在主句的前面。 do you know the time when the class is over？ 你知道下课的时间吗？(定语从句)

it was already five o’clock when the class was over.

=when the class was over， it was already five o’clock.

当下课时己经是5点了。(时间状语从句)

when， where和why在引导定语从句时可以用“介词+which”的结构来替换，在引导状语从句时却不行。 this is the factory in which (where) his father once worked.

这就是他的父亲曾经工作过的那个工厂。(定语从句)

put back the book where it was. 把书放回原处。(状语从句)

定语从句中的关系词在从句中充当某种句子成分，因此去掉它则从句成分不完整；而结果状语从句中的连接词在从句中不作任何成分，去掉后从句的成分仍然完整。 it is such an interesting book as we all like. 它是我们大家都喜欢的如此有趣的书。

(as用作动词like的宾语，它引导的是定语从句)

it is such an interesting book that we all like it.

它是一本如此有趣的书，我们大家都喜欢它。

(that不充当句子成分，故它引导的是结果状语从句)

定语从句与同位语从句：定语从句在复合句中相当于形容词，对先行词起修饰、描述或限制的作用，与先行词之间有从属关系。同位语的作用相当于名词，对前面的名词给予补充说明或进一步解释，是前面名词的具体内容，与先行词之间是同位关系。 the news that she had passed the exam made her parents very happy.

她考试及格的消息使她父母亲很高兴。(同位语从句)

此句中的同位语从句 the news that she had passed the exam

可以改写成表语从句：the news is that he passed the exam.

the news that he told us interested all of us.

他告诉我们的消息使大家都感兴趣。(定语从句)

the news that he told us 是定语从句，此句不能改写为：the news is that he told us.

定语从句与强调句：强调句的结构为“it is/was+被强调部分+that+从句”。被强调部分可以是除谓语以外的任何成分，当被强调部分是人时，还可用who代替that。这一句型中，一定不能因为被强调部分是表时间或地点的词就用when或where代替 that。 ①it is on the morning of may 1st _____ i met liang wei at the airport.

②it is the factory _____ mr wang works.

从结构上看：

①小题是强调句，故填 that。

②小题则是定语从句，用上述方法转换便知the factory前差个介词in，故填 where。

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