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高中语法专练:i. 关系代词as, which引导修饰句子的定语从句

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2020年05月24日

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i. 关系代词as, which引导修饰句子的定语从句

1. as, which引导非限制性定语从句,先行词可以是整个主句或主句的一部分。

China is in Asia, as is known to us all.

正如我们都知道的那样,中国在亚洲。

Light goes faster than sound , which is a fact.

光比声跑得快,这是事实。

He said he had been to America , which isn't true.

他说他去过美国,这并不真实。

2. as, which在从句中作主语时,其从句的谓语总是用第三人称单数形式。

They are invited to dinner, which makes them very happy.

他们被邀请去进餐,这使他们很高兴。

3. as意为“正如”,引导的从句可放主句前,但which引导的从句不能放主句前。

As we all know , China is a third world country.

正如我们都知道的那样,中国是个第三世界国家。

4. 从句是被动语态时,多用as引导从句。

China has sent up another man-made satellite, as was reported.

正如报道的那样,中国又发射了一颗人造卫星。

5. 从句谓语是know, see等时,一般用as引导从句。

This man, as you know , is good for nothing.

正如你所知道的那样,这个人一事无成。

6. as可用于the same ... as, such ... as结构中,但which不能:

We're facing the same problem as we did years ago.

我们正面临几年前面对的相同问题。

They're just such persons as we trust.

他们就是我们信任的这类人。

7. which=and that意为“这一点”,当从句是否定的,或者从句的谓语是系表结构,或者从句的宾语是复合结构时多用which引导从句。

They said they were from France, which wasn't true.

他们说他们来自法国,这并不真实。

Last night I dreamed a spirit, which kept me awake all the night.

昨天夜里我梦见鬼了,这使我一夜未眠。

8. as, which引导非限制性定语从句时,不仅可以在定语从句中作主语,也可以作宾语或表语,但是不能省略。

As you told me , he is always very kind to everyone he works with.

正如你告诉我的那样,他总是对一起工作的所有人都很和善。

He is a foreigner, which/as I know from his accent.

他是个外国人,这从他的口音我就知道。

He seemed a foreigner, as/which in fact he was.

他好像是个老外,其实他就是个老外。

专项练习

1. He must be from Africa, _______ can be seen from his skin.

A. that

B. as

C. it

D. what

2. They have decided to stay at home, _______ I think, _______ a wise choice.

A. which; are

B. which; is

C. that; are

D. that; is

3. William became the first American woman to win three Olympic gold medals in track, _______ made her mother very happy.

A. it

B. that

C. which

D. this

4. _______ everybody knows, he is very good at speaking English.

A. Which

B. That

C. Who

D. As

5. She heard a terrible noise, _______ brought her heart into her mouth.

A. it

B. which

C. this

D. that

6. The weather turned out to be very good, _______ was more than we could expect.

A. what

B. which

C. that

D. it

7. The number of the people present, _______ we had expected, was very large.

A. who

B. whom

C. that

D. as

8. That house, the doors _______ are painted white, is my grandpa's.

A. whose

B. which

C. of which

D. that

9. _______ has already been pointed out, grammar is not a set of dead rules.

A. As

B. It

C. That

D. Which

10. _______ is natural, he married Mary.

A. It

B. What

C. Which

D. As

答案速查 1-5 BBCDB 6—10 BDCAD


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