关系代词引导的定语从句
关系代词引导的定语从句
关系代词引导的定语从句1
1、that 指人或物在从句中作主语，宾语或表语
which 指物在从句中作主语，宾语或表语（作宾语时可以省略）
who 指人在从句中作主语，宾语或表语
whom 指人在从句中作宾语
who 指人或物在从句中作定语
as 指人或物在从句中作主语，宾语或表语
but 指人或物在从句中作主语，宾语或表语
注意：指物时，who+名词=the+名词+of which或 of which+the+名词
2、as 的用法
（1）常用于下列结构：such…as; so…as;the same…as; as…as
注意：the same…as 表示同一类，不同一个
the same…that 表示同一个
（2）as与which的区别
a、位置不同
as可放在主句后，主句前或主句中间；which只能放在主句后。
b、as起连接作用，表达说话人的观点、看法，并指出主句内容的根据或出处，意为“正如，正像”。
Which相当于并列句，可以用and this来代替，意为“这一点，这件事’”。
注意：as常用于下列结构：as we know/ as is known to all, as we all can e, as has bee
n said before/above,
as might be excepted, as is often the ca, 一般不能用which代替as。
c、在从句中作主语时，which既可作系动词be的主语也可作实义动词的主语，而as只可作系动词be的主语。
关系代词引导的定语从句2
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 e you?
他就是想见你的人吗？（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) Who 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 who car had broken down. 那人车坏了，大家都跑过去帮忙。
Plea pass me the book who (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 en before appears in the countryside. 农村出现了前所未有的繁荣。（which / that在句中作主语）
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）
关系代词引导的定语从句3
1. 由“介词+关系代词”引导的定语从句主要用于正式文体，在非正式文体中通常将介词放至句末。如：This is the man to whom I referred. 我指的就是这个人。This is the man (whom) I referred to. 我指的就是这个人。
2. 直接用于介词后作宾语的关系代词which不能换成that，直接用于介词后作宾语的.关系代词whom不能换成who。但若介词用于句末，则用作宾语的which, whom也可换成that, who，或者省略不同。如：这是一个我们讨论了许多的问题。This is a subject about which we have talked a lot.(which不能换成that，也不能省略)This is a subject which we have talked about a lot. 这是一个我们讨论了许多的问题。(which可以换成that，也可以省略)
3. 关系副词when, where, why根据情况有时可换成“介词+关系代词which”。如： That is the day when [=on which] he was born. 那就是他出生的日子。That is the hou where [=in which] he lived. 那就是他住过的房子。That is the reason why [=for which] he must apologize. 那就是他必须道歉的原因。
4. 在很正式的文体中，“介词+关系代词”引导的定语从句可紧缩成“介词+关系代词+不定式”结构。如：在那儿孩子们有个玩耍的花园。正：There the children had a garden in which to play. (很正式)正：There the children had a garden in which they could play. (较正式)正：There the children had a garden to play in. (较口语化)注：这类“介词+关系代词++不定式”结构中的介词不能没有，也不能放在句末。如不能说There the children had a garden which to play in.
关系代词引导的定语从句4
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
Is he the man who/that wants to e 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) Who 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 who car had broken down. 那人车坏了，大家都跑过去帮忙。
Plea pass me the book who (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 en 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）
