英语四六级中的定语从句考点集纳

在英语四六级考试中，英语从句相关的考点，中都是一个重头戏，也一直被广大考生所重视。今天，北外网课（北京外国语大学网络课堂）老师分类列举饿了英语四六级考试相关的定语从句考点，详细带你一一掌握。

1． 先行词为all, anything, something, nothing, everything, much, little, none等不定代词时，关系代词一般只用that，不用which。在大多数情况下that可以省略．            

Please tell me everything (that)you know about the matter.          

2． as引出的限制性定语从句          

在such  as的结构中as可作关系代词，引出限制性定语从句。有时和same连用，在从句中可作主语、宾语或表语等。

I’ve never seen such a talented young man as he is.

3．as引出的非限制性定语从句

as可作关系代词引出非限制性定语从句，代替整个主句，通常译为“（正）如一样”

，引导的从句一般用逗号与主句隔开，可以位于主句的前面、中间或后面．

As is generally accepted, economic growth is determined by the smooth development of

production.

4分隔式定语从句

定语从句一般紧跟在先行词之后，但有时会被其他句子成分与先行词隔开，从而

构成分隔式定语从句。

A new teacher will come tomorrow who will teach you French.

5.介词+关系代词（which/whom等）引出的定语从句

如果关系代词（which/whom等）在定语从句中作介词的宾语，那么这个介词可以

提到从句前，构成“介+关系代词（which/whom等）+定语从句”。在这种结构中关系代词不可以用that

The four travelers with whom I shared the room were pleasant people.

6.关系代词在限制性定语从句中常可以省略,一般有以下几种情况

1)关系代词在从句中作直接宾语时，在大多数情况下可以省略。

This is something (that) you must always keep in mind.

关系代词作介词宾语时，介词位于句尾时关系代词可以省略；介词位于关系代词

之前时则关系代词不能省略。

This is the room (which) Churchill was born in.

This is the room in which Churchill was born.

（which不可省略）

2) 关系代词作主语时一般不能省略，但如果关系代词在由there be存在句构成的定语从句中作主语时常可省略。            

The old professor made full use ofthe time (that) there was left to him to continue his research.            

3)在way后面的定语从句中in which或that通常省略。          

That’s the way (that/in which) I lookat it.          

7.非限制性定语从句            

非限制性定语从句修饰先行词或整个主句，起补充说明的作用，如果省略掉，原句句意仍保持完整。非限制性定语从句要用逗号与主句隔开，其引导词不能用that。非限制性定语从句属于正式语体。经常考到的非限制性定语从句有以下三种。            

1)   由which、as引导的非限制性定语从句。which、as代表整个主句。          

He said that he had never seen herbefore, which was not true.          

2)   由“介词+关系代词”引导的非限制性定语从句。          

He failed to pass the exam,because of which his parents scolded him.