As及which引导非限制性定语从句

as和which引导定语从句的区别

as和which引导定语从句的区别

导语： As 和which都可以引导非限定性定语从句，在用法上有一些区别。欢迎阅读！

1.as 和which都可以在定语从句中作主语，宾语，既可修饰一个词也可修饰前面的整个句子。

A.She accepted his proposal, as(which)was natural.

她接受了她的求婚，这是自然而然的。

B.The boy is pretty handsome, as(which)we can see in our

classroom.

这个男孩非常的帅气，正如我们在教室看到。

2.as 在非限定性定语从句中的使用

2.1 as可以放在主句之前，主句之后，也可以放在句中，可以说位置很灵活。但是which常用在主句之后

A.As we know,technology just like a engine to push the

development of economics.

众所周知，技术就像是引擎推动着经济的'发展。

B.The diva,as you know, is famous throughoutthe world.

这个女歌剧演唱家，正如你知道的，在全世界都出名。

C.He has stood her up, which I don`t believe.

他没有赴约，这事我不相信。

2.2 as与the same，such 连用时，用as。

A.This is the same phone as I have borrowed from my sister.

这个手机和我向我姐姐借的一样。

B.I have never had such a chance to make a speech as I

always imagined.

我从没有这样一个机会去演讲，正如我一直想象的那样。

2.3在从句中谓语动词为被动语态，缺少主语时用as，不用which。

which与as引导非限制性定语从句的异同

which与as一样,都可以引导非限制性定语从句,它们既有相同之处,也有差别。因此在实际运用中容易混淆。它们的某些用法在高考中也会考查。

一.相同点。

两者引导非限制性定语从句时,可指代主句中的部分或整个句子的内容,在从句中做主语,宾语或表语,位于主句之后有时可互换。The meeting was put off,

as /which was exactly what we wanted.

He was a doctor, as/which I knew from his manner.

二.不同点

1. as可指其前后主句提到的事实或情况,因此引导的非限制性从句位置比较灵活,which可以放在主句前后,也可插入主句之中;而which 引导的非限制性从句只能位于主句之后。

As is known to all, fish can’t live without water.

Air, as we know, is gas.

2.在非限制性从句中,which后的be动词不可省;as而后的be动词可以省略。

She told me she won the match , which was a lie.

The material is elastic, as (was) shown in the figure.

3. which在非限制性定语从句做主语时可用各类动词做谓语;而在非限制性定语从句做主语时,谓语常用连系动词,如be, seem, become 等,一般不用其他行为动词。

He saw the girl, which delighted him.

He didn’t say anything at the meeting , as/which seemed very

strange. 4. 如果主句中叙述的事情与从句所涉及的意向一致,多用as,用以对主句的意义进行补充;如果不一致,就用which

1 高中英语一轮复习语法专题：as和which引导非限制性定语从句的区别专练

一、单选题

1.—Hello, is Mr. Smith in?

—Sorry, there is ______person ______ you referred to in my office.

A. such no; that B. such no; whom C. no such; who D. no such; as

2.Shenzhou I, ________ many of you are old enough to remember, was launched in November, 1999.

A. what B. that C. as D. one

3.____is known to all, good friends _________ happiness and value to life.

A. It; add B. As; add C. It; add up D. As; add to

st night I saw a film, _____ was about the wild animals.

A. which B. that C. who D. whom

Which/ as 引导非限制定语从句的异同点

1相同点

(1) which/as在非限制定语从句中作主语时，且谓语为系表结构时，二者可互换

eg:He didn’t go to school yesterday, which / as was strange.

(2) which/ as 在非限制定语从句中做宾语时，二者可互换

eg:This elephant is like a snake, as/ which anyone can see.

Peter studies hard, as/ which we all know.

(3)which/ as在非限制定语从句中作表语时（此时as/which代表的是主句的表语）

eg:These ideas seem strange, as/which in fact they are.

The meeting is very important to us, as/ which indeed it is.

2 which / as的不同点

（1） as引导的非限制定语从句可以放在句首，句中和句尾，而 which引导的非限制定语从句通常放在句末，不能放在句首。

eg:As we all know, getting up early is very helpful.

As everyone knows, the population of China is the largest in the world.

If you go along the street to the end, as I tell you to do, you’ll find the hospital.

(3) 当非限制定语从句中谓语是 say, know, imagine, expect, show, point, report, announce, suppose 以及这些动词的被动式时，用as。常见的结构有