高中語法專練：i. 關(guān)系代詞as, which引導(dǎo)修飾句子的定語從句

i. 關(guān)系代詞as, which引導(dǎo)修飾句子的定語從句

1. as, which引導(dǎo)非限制性定語從句，先行詞可以是整個主句或主句的一部分。

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

正如我們都知道的那樣，中國在亞洲。

Light goes faster than sound , which is a fact.

光比聲跑得快，這是事實。

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

他說他去過美國，這并不真實。

2. as, which在從句中作主語時，其從句的謂語總是用第三人稱單數(shù)形式。

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

他們被邀請去進餐，這使他們很高興。

3. as意為“正如”，引導(dǎo)的從句可放主句前，但which引導(dǎo)的從句不能放主句前。

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

正如我們都知道的那樣，中國是個第三世界國家。

4. 從句是被動語態(tài)時，多用as引導(dǎo)從句。

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

正如報道的那樣，中國又發(fā)射了一顆人造衛(wèi)星。

5. 從句謂語是know, see等時，一般用as引導(dǎo)從句。

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

正如你所知道的那樣，這個人一事無成。

6. as可用于the same ... as, such ... as結(jié)構(gòu)中，但which不能：

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

我們正面臨幾年前面對的相同問題。

They're just such persons as we trust.

他們就是我們信任的這類人。

7. which=and that意為“這一點”，當(dāng)從句是否定的，或者從句的謂語是系表結(jié)構(gòu)，或者從句的賓語是復(fù)合結(jié)構(gòu)時多用which引導(dǎo)從句。

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

他們說他們來自法國，這并不真實。

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

昨天夜里我夢見鬼了，這使我一夜未眠。

8. as, which引導(dǎo)非限制性定語從句時，不僅可以在定語從句中作主語，也可以作賓語或表語，但是不能省略。

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

正如你告訴我的那樣，他總是對一起工作的所有人都很和善。

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

他是個外國人，這從他的口音我就知道。

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

他好像是個老外，其實他就是個老外。

專項練習(xí)

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

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