as的用法总结

As 用法专练

1. It is generally believed that teaching is ____ it is a science.

A. much as an art as B. as much an art as C.an art as much as D.as much as an art

2. _____ I admire David as a poet,I don’t like him as a man.

A.Only if B.If only C. As much D.Much as

3. ____ ,he talks a lot about his favourite singers after class.

A.A quiet student as he may be B.Quiet student as he may be

C.Quiet as he may be a student D.As he may be a quiet student

4.I wonder why you don’t do it as ____ and it’s the third time you have done so.

A.told you B. be told C. told to D. you told

5.( 1) ___I explain on the phone,your request will be considered at the next meeting.

(2)____ I explain on the phone is that your request will be considered at the next meeting.

A. What B.When C.After D. As

6.(1)That is ____ problem____can’t be worked out by anyof us .

(2)That is ____problem____none of us can work it out.

A.a such difficult , that B.so difficult a ,that

C.such a difficult, as D.a so difficult ,as

7.There were not so many jobs available ____ were asked for.

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

8.____ time went on,Einstine’theory_____ right.

A. With, proved B As, be proved C.With, be proved D. As, proved

9.He will surely finish the job on time ____ he’s left to do it in his own way.

A.as if B.even if C.so long as D. so that

10.Scientists generally agree that the earth’s climate will warm up over the next 50 to 100 years____it has warmed in the 20,000 years since Ice Age.

A.As long as B.as much as C.as long as D. as well as

11.Do come to my party,and bring your sister____.

A.as good B.as a whole C.as well D.instead

12.It’s useless trying to argue with the sort of him.You might____ go and stand upon the beach and argue with the sea.

A as well B also C.as if D. as well as

13.(1) We all passed the exam,but ___ him, he alone failed.

(2) ____ running, learning English needs will.

A. As/as with B. As/as to C.As/as for D.As/as if

14.I thought things would get better, but ___ it is they were gettting worse.

A before B.because C.as D.after

15.All the gifts must be mailed immediately____ in time for Christmas.

A in order to have received B.in order to received

C.so as to be received D.so as to be receiving

16(1)Look! The clouds are gathering. It looks as if it ______ (rain).

(2)If you put a chopstick into water , it looks as if it _____(break)

Answers: 1-4 B D B C 5 (1)D (2) A 6.(1)C (2) B 7-10 D D C B 11-12 C A 13 (1)C

(2)A 14-15 C C 16 (1) is going to rain (2) were broken

第二篇：as的用法总结

as可以作连词、介词及关系代词。现将其用法小结如下:

一、 as作连词的用法:

1. 作"当……的时候",引导时间状语从句。注意与when、 while的用法区别。

① when作"当……的时候"解,可以指较短的(一点)时间,也可指一段时间。如:

When he was at college, he could speak several foreign languages.

When the clock struck twelve, all the lights in the street went out.

② while常表示一段较长的时间或一个过程,强调主句谓语动词与从句谓语动词同时发生。如:

Work while you work. Play while you play.

③ 但属下列情形时,只用as, 而不用when或while。

A) 用于表示同一个人的两种动作交替进行,指"一边……,一边……"。如:

The girl dances as she sings on the stage.

He looked behind from time to time as he went forward.

B)表示两个同步发展的动作或行为,译为"随着……"。如:

As time went on / by, she became more and more worried.

As children get older, they become more and more interested in the things around them.

C)表示两个短促行为或事件几乎同时发生。如:

I thought of it just as you opened your mouth.

Just as the flying worm hit her face, she gave a loud cry.

D) 后接名词表示某一年龄段时,用as。如:

As a young man, he was active in sports.

2. as=since, 作"既然"、"由于"解,引导原因状语从句,常用来表示已为人们所知或显而易见的原因或理由。如:

As / Since you're not feeling well, you may stay at home.

As he wasn't ready in time, we went without him.

3. as=in the way that, 作"像"、"按照……的方式"解,引导方式状语从句。如:

He speaks English as Americans do.

Remember, you must do everything as I do.

4. 用于as...as...或not so/ as...as...中,前一个as是副词,后一个as是连词,引导比较状语从句。如: They helped the old man as often as possible.

I don't speak English so/ as well as he does.

5. 作"虽然"、"尽管"解,引导让步状语从句。常用倒装语序,即adj. /adv. / n.+as +主语+谓语+主句。如: Tired as they were, they walked on.

Child as he is, he knows a lot. (child前不用冠词)

二、 as作关系代词,引导定语从句,作"正如"、"这一点"解。如:

He is very careful, as his work shows.

As is well-known, Taiwan belongs to China.

另外,当先行词被the same, such等词修饰时,常用as来引导定语从句。如: Such a clever boy as he can learn anything quickly.

I was reading the same book as he bought yesterday.

三、 as作介词的用法:

as引导的介词短语大多用作状语,as译为"作为";少数情况可引起宾语补足语。如: As a League member, I'll take the lead in everything. (状语)

She works as a doctor. (状语)

They have me as one of their own children.(引起宾语补足语)

As无论在语法还是作文中都是一个重要的词，希望这些资料对大家有帮助。