高中英语定语从句(限制性、非限制性定语从句)

高中英语定语从句详解

限制性定语从句

非限制性定语从句

限制性定语从句：

Ⅰ. 概念：

(1) 定语从句：在主从复合句中用作定语的从句叫定语从句。定语从句一般紧接在先行词(antecedent)后面。

(2) 先行词：被定语从句修饰的成份。先行词可以为一个词，短语，或整个主句。

(3) 引导定语从句的词叫关系词，分为关系代词和关系副词。

一、关系代词:

关系词的作用：

1) 引导定语从句，连接主句和从句，相当于一个连词；

2) 必在从句中作某个句子成份（可以做主语，宾语，表语，定语，状语）

常用的关系代词: that、 which、 who、whom、whose、as

常用的关系副词（在从句中只作状语）: when、why、 where

The student who answered the question was John.

The boy (whom) you are talking to is my brother.

定语从句三步：

第一找出先行词；第二看先行词在定语从句中的语法功能（做主语、宾语或状语）；第三选择合适的关系词。

Ⅱ. 几个关系代词的基本用法：

●that: 可指人或物；在定语从句中作主语，宾语，表语。(指人时，相当于who或 whom；指物时，相当于which)(一般不用于非限制性定语从句; 不可置于介词后作宾语) 如：

1. A letter that/which is written in pencil is difficult to read. (主语)

2. Do you know the gentleman that/who spoke just now?

3. You can take anything ( that) you like. （宾语）

●which: 指物；在定语从句中作主语，宾语，表语，定语。如： 1. The book which/that was on the desk was bought by my father.（主语）

2. The book (which/that) I bought yesterday is very interesting.（宾语）

●who, whom, whose:

who: 主格, 在从句中作主语，在口语或非正式用法中作宾语; 只可指人

whom: 宾格，在从句中作宾语; 只可指人

whose: 属格，在从句中作定语，可指人也可指物。

I like the students who/that work hard. （主语）

All who heard the story were amazed. (代词如he, they, any, those, all, one等后多用who.)

He's a man from whom we should learn.

= He's a man (whom/who/that) we should learn from.

比较：He is the student whom you think to be worthy of your praise.

He is the student who is worth praising.

A child whose parents are dead is called an orphan.（指人）

I'd like a room whose window faces south. （指物）

二、关系代词作介词宾语:

关系代词在定语从句中用作介词宾语时, 介词可放于从句之首, 也可放于从句之末. 但以放于句首较为正式.（介词前置，必须注意不影响动词词组的含义。关系代词who 和 that 用作介词宾语时, 介词必须放在句末.）

This is the book for which you asked.

=This is the book (that/which) you asked for.

Do you know the person with whom I shook hands？= Do you know the person

(whom/who/that) I shook hands with?

This is the girl whom they are looking after. (介词after与look构成固定词组，不可前置。look at, look for, look after, take care of等)

三、●as 的用法:(as 引导定语从句, 在定语从句中作主语、宾语、表语)

①如为限制性的，多用于the same …as ; the same as；such …as …; as many/much as；so …as等结构中。如：I have the same book as you (have). 我有一本和你的一样的书。

Her attitude to him was quite the same as it had always been. (关系代词as和指示代词same连用, 在从句中用作表语, 先行词是same.)

比较：I live in the same house that he used to live in.

I'm wearing the same shirt as you wore yesterday.

②如为非限制性的，多单独引导一个定语从句，这种定语从句可置于句首，句中或句尾，译为"正如，这一点"。（动词常为know, see, expect, point out, etc.）

As we all know, smoking is harmful to one's health . (as 作宾语)

=As is known to all, smoking is harmful to one's health . （as 作主语）

四、几个易混淆的关系代词的比较:

●that & which:

在定语从句中，which 和that 在指代事物时，一般可以互换使用，但并非在任何情况下都是这样，这里介绍宜用that, 而不宜用which 的情况.

1）这里介绍宜用that, 而不宜用which 的情况

①先行词为不定代词,all,much,something,everything,anything,nothing,none,the

one等,

1.We should do all that is useful to the people .

2.There's nothing that can be said about it .

②先行词被only, any, few, little, no, just, very, one of等词修饰时。

1.The only thing that we could do was to wait.

2.That's the very word that is wrongly used.

③先行词是序数词时或被序数词修饰时。

1.When we talk about Wuxi, the first that comes into mind is Tai Lake.

2.This is the third film that has been shown in our school this term.

④先行词是最高级或被最高级修饰时。

1.This is the best that can be done now.

2.The most important thing that should be done right now is how to stop him

from going on. ⑤先行词既有人又有物，用which和who都不适合，这时宜用that. 如：

1.The writer and his novel that you have just talked about is really well known .

2.The rider and his bike that had run over an old woman were held up by the

police.

⑥被修饰词为数词时.

1.Yesterday I caught two fish and put them in a basin of water .Now you can see

the two that are still alive .

⑦如果有两个从句，其中一个关系代词已用which ,另一个关系代词宜用that，以避免语言的单调或重复。

Edison built up a factory which produced things that had never been seen before.

⑧疑问词是who或which，关系代词宜用that，以避免重复。

1. Which is the book that you like best?

2. Who is the man that is standing at the gate?

⑨主句是There be 结构，修饰其主句的定语从句宜用that 作关系代词. 如：

1. There is still a seat in the corner that is still free.

⑩被修饰成分为表语时，或者关系代词本身是定语从句的表语时,该关系代词宜用that .

1. That's a good book that will help you a lot.

2. My home village is no longer the place ( that ) it used to be .

2）定语从句中宜用which而不宜用that 的情况:

①当关系代词的前面有介词时.

1.A zoo is a park in which many kinds of animals are kept for exhibition.

②在非限制性定语从句中.

1.Crusoe's dog, which was are now very old, became ill and died .

③在一个句子中有两个定语从句，其中一个定语从句的关系代词用了that, 另一个宜用which . 1. Let me show you the novel，that I borrowed from the library

which was newly open to us.

④当关系代词后面带有插入语时.

1. Here's the English grammar which, as I have told you, will help improve your

English.