关系代词和关系副词有什么区别？

关系代词所代替的先行词是人或物的名词或代词，并在句中充当主语、宾语、定语等成分。关系代词在定语从句中作主语时，从句谓语动词的人称和数要和先行词保持一致。

1）who, whom, that

这些词代替的先行词是人的名词或代词，在从句中所起作用如下：

Is he the man who/that wants to see you?

他就是你想见的人吗？（who/that在从句中作主语）

He is the man whom/ that I saw yesterday.

他就是我昨天见的那个人。（whom/that在从句中作宾语）

2) Whose 用来指人或物，(只用作定语, 若指物，它还可以同of which互换), 例如：

They rushed over to help the man whose car had broken down. 那人车坏了，大家都跑过去帮忙。

Please pass me the book whose (of which) cover is green. 请递给我那本绿皮的书。

3)which, that

它们所代替的先行词是事物的名词或代词，在从句中可作主语、宾语等，例如：

A prosperity which / that had never been seen before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作宾语）

The package (which / that) you are carrying is about to come unwrapped. 你拿的包快散了。(which / that在句中作宾语)

关系副词可代替的先行词是时间、地点或理由的名词，在从句中作状语。

1）when, where, why

关系副词when, where, why的含义相当于"介词+ which"结构，因此常常和"介词+ which"

结构交替使用，例如：

There are occasions when (on which) one must yield. 任何人都有不得不屈服的时候。

Beijing is the place where (in which) I was born. 北京是我的出生地。

Is this the reason why (for which) he refused our offer? 这就是他拒绝我们帮助他的理由吗？

2）that代替关系副词

that可以用于表示时间、地点、方式、理由的名词后取代when, where, why和"介词+ which"引导的定语从句，在口语中that常被省略，例如：

His father died the year (that / when / in which) he was born. 他父亲在他出生那年逝世了。

He is unlikely to find the place (that / where / in which) he lived forty years ago. 他不大可能找到他四十年前居住过的地方。

What只能引导名词性从 句， 用作连接代词，作从句的具体成分，且不能省略。

I think (that) you will like the stamps.

What we need is more practice.

希望对你有帮助，祝你进步。

关系代词和关系副词的异同

意思见下面：

关系代词代表先行词，同时在从句中作一定的句子成分。关系代词that在从句中作宾语或表语时可省略。关系副词所引导的形容词子句用于修饰主要子句中的某一名词或代名词，被修饰的词称作先行词，关系副词要放在先行词之后。

选用关系代词还是关系副词，归根结底要看定语从句缺什么成分，如果缺的是主语、宾语或定语，就选用关系代词；如果缺状语，则选用关系副词。

关系代词有who,whom,that,which,whose,关系副词有where(地点）,when（时间）,why（原因）.

总体来说关系副词在定语从句中做状语?

他们和关系代词主要的区别是where,when,why=介词 which

eg:This is the house in which (where) I lived last year.

This is the reason for which (why) he was late for school.

That's the day on which (when) I met him in the street.

关系词的选择依据在从句中所作的成分,先行词在从句中作主、定、宾语时,选择关系代词（who,whom,that,which,whose）；先行词在从句中做状语时,应选择关系副词（where地点状语,when时间状语,why原因状语）.

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