初三英语定语从句讲解及练习题

在复合句中修饰名词和代词的从句叫做定语从句。被定语从句修饰的名词或代词叫做先行

!词。

引导定语从句的关系代词有who, whose, whom, which, that 。

引导定语从句的关系副词有whe n, where, why 。

关系代词在定语从句中做主语，宾语，定语。关系副词在定语从句中做状语。

一、w ho引导的定语从句,who在从句中做主语(口语中也可做宾语)，修饰表示人的先行词。

This is the man who helped me.

The boy who//whom we saw yesterday is John ' s brother.

二、w hom引导的定语从句,whom在从句中作宾语，修饰表示人的先行词，口语中可以省略。

The doctor (whom) you are looking for is in the room.

The person (whom) you just talked to is Mr. Li.

=The person to whom you just talked is Mr. Li.( 介词后whom 不能省略)

The babies whom the nu rses are look ing after are very healthy.

(固定短语中的介词一般不能拆开，仍放在动词之后。look for / look after /take care of /

put on / take off …)

三、w hose引导的定语从句,whose在从句中作定语，修饰表示人或物的先行词。

Do you know the woma n whose n ame is Mary. Pass me the dictio nary whose cover is black.

He has a frie nd whose father is a doctor.

四、t hat引导的定语从句，that在从句中做主语或宾语、修饰表示人或物的先行词。作宾语时可省略，不能放在介词后面作宾语.(that指人时，相当于who或者whom ;指物时，相当于which) The letter (that//which) I received was from my father.

I can ' t find the letter that//which came this morning.

Do you still remember the days (that//which)we spe nt together ?

This is the man that//who helped me.

The house (that//which) we live in is n ot large. =The house in which we live is not large.

The doctor (that//whom //who)you are look ing for is in the room.

五、w hich引导的定语从句，which在从句中做主语，也可做宾语，或介词的宾语，修饰

表示物的先行词

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