本篇文章给大家谈谈关系代词的用法，以及关系代词的用法对应的知识点，文章可能有点长，但是希望大家可以阅读完，增长自己的知识，最重要的是希望对各位有所帮助，可以解决了您的问题，不要忘了收藏本站喔。

我已经和你分享了英语中九个代词中的八个，即人称代词、物主代词、互惠代词、指示代词、反身代词、疑问代词、不定代词和连词。今天我继续和大家分享最后一个代词，——个关系代词。

一.定义

所谓关系代词，是指用来引导定语从句的代词。我们之所以称这些代词为关系代词，是因为它们有一个相关的功能，可以把引导从句和从句修饰的词(即先行词)联系起来。

英语中常用的关系代词有：which，that，who，who，who。根据它们在句子中的句法功能，这些代词可以分为主格、宾格和所有格，即：

Which, which and who is the nominative case?

Accusative such as which, that, who, who.

所有格：谁的

第二，用立法来解决

(1) Which one?

which引导定语从句时，在从句中既可以作主语，也可以作宾语。比如：

I lost the book my English teacher gave me as a birthday present yesterday. (as an object)

I lost the book that my English teacher gave me as a birthday present yesterday. (as the subject)

[注意]

1.当which在子句中用作宾语时，可以省略。比如：

Yesterday I lost the book my English teacher had given me as a birthday gift.

2.也可以用来连接非限制性定语从句。比如：

Yesterday I left Alice Springs, which is a small town in the center of Australia.

3.which在从句中可以和介词一起作状语，相当于一个关系副词。比如：

Yesterday I left Alice Springs, in which there is a big desert park.

其中相当于关系副词where，可以用where代替。

(2) That

在定语从句中既可以做主语，也可以做宾语。比如：

This is the dictionary that is of great help to my English study. (as the subject)

This is the dictionary you are looking for. (as an object)

[注意]

1.当that是从句的主语时，它通常可以被which代替。比如：

This is the dictionary which has helped me a lot in my English study.

但是有很多情况你只能用那个，然后我在分享定语从句的时候再和你详细梳理。

that在从句中作宾语时，也可以用which代替，往往省略。比如：

This is the dictionary you are looking for.

然而，正如that作主语的情况一样，也有很多情况下关系代词只能是that，下次不能与which详细共享。

3.那不能引导非限制性定语从句。比如：

This is the dictionary, which cost me five dollars.

句子中的That应改为which。

(3) Who?

who引导定语从句时，通常是从句中的主语。比如：

He is the man who called me four times yesterday.

[注意]

1.who有时在从句中充当宾语，相当于who。比如：

He is the man who you talked about yesterday.

句子中的Who实际上是about的宾语，可以省略。

但是，在介词后面，必须用whom。后面分享定语从句的内容时，我们会详细讲解，这里不再赘述。

2.who也可以用来引导非限制性定语从句。比如：

His brother, who is a teacher, is always kind to others.

(4) Who?

who是who的宾语形式，只能在定语从句中作宾语。比如：

She is the woman whom I served just now.

Whom在句子中可以省略，因为它是宾语。

[注意]

1.如果whom跟在介词后面，就不能省略。比如：

She is the woman to whom I talked just now.

2.who也可以用来引导非限制性定语从句。比如：

The doctor, whom you admire, will visit our hospital tomorrow.

(5) Whose?

因为which是所有格形式，表示关系，在实际操作中，which后面会跟一个名词来引导定语从句。比如：

She lives in a room whose window opens to the north.

[注意]

“谁的名词”也可以引导非限制性定语从句。比如：

The driver, whose back was badly injured, was sent to the hospital nearby at once.

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