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英语关系代词用法要点

2020-04-21来源:和谐英语


英语关系代词用法要点

 

1. 意义与用法

什么叫关系代词?简单地说,它是用于引导定语从句的代词。我们之所以把引导定语从句的代词叫关系代词,是因为它们具有关联作用,能把引导的从句与所修饰的词语联系起来。

英语中的关系代词不多,主要有 that, who, whom, whose, which, as 等。其中who, whom 只用于指人,which, as 只用于指物,whose, that 既可于指人也可指物。关系代词在定语从句主要用作主语、宾语、表语或定语。如:

Did you find the pen which you lost? 你的钢笔找到了吗?

句中的which为关系代词,由它引导的定语从句which you lost修饰名词the pen,which在定语从句中用作宾语,它也可以换成that,或省略。

A man who sells books in a shop is called a bookseller. 开店售书的人叫做书商。

句中的who为关系代词,由它引导的定语从句who sells books in a shop修饰名词a man,who在定语从句中用作主语。

2. thatwhich

两者用作关系代词时都可以指物,常可互换。两者的区别是:

(1) 通常要用which的场合:

①引导非限制性定语从句时,通常只用which。如:

Water, which is a clear liquid, has many uses. 水是一种清澈的液体,有许多用途。

which在此引导的是非限制性定语从句,故不可换成that。

②直接放在介词后作宾语时,通常只用which。如:

I admired the patience with which she spoke. 她说话有极大的耐心,我很钦佩。

直接用作介词with之后作宾语,只能用which,不能用that。

(2) 通常要用that的场合:

①当先行词是much, little, none, all, few, every(thing), any(thing), no(thing) 等不定代词或受其修饰时,通常用that。如:

We haven’t got everything that you ordered. 你要的,我们不是样样都有。

All that remains for me to do is to say goodbye. 剩下我所要做的就是告辞了。

第一句中的定语从句that you ordered修饰不定代词everything,第二句中的定语从句that remains for me to do修饰不定代词all。两个定语从句中的that都不宜换成which。

②当先行词受the very, the only, the same 等修饰时,通常用that。如:

This is the only example that I know. 我知道的例子只有这一个。

Those are the very words that he used. 那是他的原话。

受定语从句修饰的example和words前分别有the only和the very修饰,故要定语从句要用that来引导。另外注意,第二句中的the very不是表示“很”,而是表示“正是”“恰是”,very在此为形容词,而不是副词。

③当先行词有形容词最高级或序数词(包括last, next等)等修饰时,通常用that。如:

This is the best hotel that I know. 这是我知道的最佳旅馆。

The first thing that you should do is to work out a plan. 你应该做的第一件事是订个计划。

④当关系代词在定语从句中用作表语时,通常用that。如:

China is not the country (that) it was. 中国已不是过去的样子了。

that it was为修饰名词the country的定语从句,that在定语从句中用作连系动词was的表语,此时可以省略,但不宜换成which。

⑤当先行词是一个既指人又指物的并列词组时,通常用that。如:

The train ran over a boy and his dog that were just crossing the track. 火车压死了正穿越轨道的一个男孩和他的狗。

定语从句that were just crossing the track修饰的不只是his dog,而是a boy and his dog,由于它既包含有人也包含物,故用that。

⑥当要避免重复时。如:

Which is the car that overtook us? 超过我们的是哪辆车?

由于句首用了which,所以后面修饰the car的定语从句that overtook us要用that来引导,而不用which,目的是为了避免与句首which的重复。

3. thatwho

(1) 互换的场合:两者均可指人,有时可互换。如:

The man that [who] stole your car has been arrested. 偷你汽车的人已经捕获。

用当于all, everyone, everybody, no one, nobody和those后面引导定语从句时,通常用who,其实也可用that。如:

Everyone who [that] knew him liked him. 认得他的人都喜欢他。

Nobody who [that] watched the match will ever forget it. 看了这场比赛的人都不会忘记它。

(2) 通常要用 that的场合:

①当先行词是一个既指人又指物的并列词组时。如:

I made a speech on the men and things that I had seen abroad. 我就我在国外所见到的人和事作了报告。

定语从句that I had seen abroad在句中修饰the men and things,故只能用that来引导;如果用who来引导,显然与被修饰的things不匹配。

②当先行词是who时(为避免重复)。如:

Who is the man (that) you were talking to? 刚才和你讲话的人是谁?

③当关系代词在定语从句中作表语时(可省略)。如:

Tom is not the boy (that) he was. 汤姆这孩子已不是以前那个样子了。