as用法

AS 用法归纳　　

泉州七中 陈巧桂　　

单词as虽词形简单，但用法复杂，可作介词，从属连词，关系代词，替代词，还可与其他词汇结合构成诸多搭配，故一直是高考的命题热点，也是广大师生复习备考的难点。现结合考题，对其有关难点用法作一剖析。　　

（ 一）、 as 作从属连词的用法 : 　　

1．            表示时间，引导时间状语从句，作“当．．．的时候”解，有“随着．．．”之意。注意与 when 、 while 的用法区别。 　　

1)主从句动作先后发生常用when;两个较长动作同时发生用while;特别强调主从句动作同时发生用as,译作“一边…一边”　　

He smiled as he passed. 　　

他路过的时候笑了一下。 　　

As she sang, the tears ran down her cheeks. 她一边唱歌，眼泪一边从脸颊淌下。 　　

Helen heard the story as she washed. 　　

海伦一边洗衣服一边听故事。 　　

下列情形时 , 只用 as, 而不用 when 或 while 。　　

1) 表示“两个同步发生的动作或行为” , 意思是“随着…的发展” 　　

We get wiser as we get older. 　　

我们随着年龄的增长而变得聪明起来。   　　

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

As children get older, they become more and more interested in everything. 　　

 2)接在名词后面表示某一个年龄段时 . 　　

As a young man, he was active in sports. 　　

=When he was a young man, he was active in sports.　　

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。　　

Work while you work. Play while you play. 　　

2．            引导原因状语从句，作“因为，由于”解，注意与because，since,for的用法区别　　

剖析：because语势最强，用来说明人所不知的原因，回答why提出的问题，当原因是显而易见的或已为人们所知，就用as或 since，。但如果不是说明直接原因，而是多种情况加以推断，就只能用for，它表示的原因通常起补充说明的作用。　　

eg； I must stop writing now，as I have rather a lot of work to do．我必须停笔了，因为我还有许多工作要做。 　　

I didn't go, because I was afraid. 我不去是因为我怕。　　

Since /As the weather is so bad, we have to delay our journey. 　　

天气那么糟，旅行推迟了。　　

He must be ill, for he is absent today. 　　

他一定病了，所以今天缺席。　　

3．引导方式状语从句或比较状语从句，作“正如，(如)像”解。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 as much as possible. 　　

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

As in your country，we grow wheat in the north and rice in the south．　　

正如(像)你们国家一样，我们在北方种小麦，在南方种大米。(方式状语从句)     　　

When at Rome，do as Romans do．　　

入乡随俗。(方式状语从句) 　　

4．表示转折，引导让步状语从句，作“虽然，尽管”解。这时从句常用倒装语序，即把从句中的表语、状语或动词原形放在as之前。模式为 : adj. /adv. / n.+as + 主语 + 谓语 + 主句。　　

Eg. Strange as it may seem，it is true．尽管这事看上去很奇怪，但却是真的。     　　

Try as he might，Tom could not get out of the difficulties．　　

不管怎样努力，汤姆还是摆脱不了困境。   Young as he is, he knows much. 　　

Tired as they were, they walked on. 　　

（二）.用作从句性替代词，等同于so　　

表示“也 … 一样”。  　　

Eg. She is a doctor, as/so is her husband. 　　

   Our eating habits have changed, as/so has our way of life.　　

练习：　　

---My room gets very cold at night.　　

---______.　　

A. So is mine           B. So mine is　　

C. So does mine         D. So mine does　　

（三） as 作 关系代词 , 引导定语从句 , 指代整个句子或某个先行词，表示“正如 ”之意, 注意与which 和it的用法区别。 　　

1.引导限制性定语从句，用在 “such．．．as”, “the same．．．as”，“as．．．as”等结构中，常译作“像．．．一样的人(或物)”，“凡是．．．的人(或物)”。 　　

eg：He wished to be such a man as Lei Feng was．他曾希望做一个像雷锋那样的人。 　　

My hometown is no longer the same as it was．我的家乡再也不像过去一样了。 　　

2．引导非限制性定语从句，用来指代它前面的整个句子(即先行句)，意思是“这一点”。这个分句可以位于句首、句中或句末。 eg：As is well known，oceans cover more than 70％ of the earth． 　　

我们知道，海洋占地球面积的百分之七十以上。   　　

He is very careful, as we all know. 　　

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 girl as she can learn anything quickly. 　　

I was reading the same book as he bought yesterday. 　　

（四）、 as 作 介词 的用法  　　

1. 作“如，像”解 , 表示“好像”　　

如 :He dressed as a policeman.    　　

They got united as one man．　　

他们团结得像一个人一样。 　　

2. 作 “充当，作为”解, 表“作为 , 当作”　　

如： I found a job as a guide.    　　

As a writer，he was famous．　　

作为作家，他是很有名的。 　　

1）            当某人是某身份时。　　

如： As a child , she was sent to abroad. 　　

as 引导的介词短语大多用作状语 ,as 译为 " 作为 "; 少数情况可做宾补。　　

As a Party member, I'll take the lead in 　　

everything. ( 状语 )　　

She works as a model. ( 状语 ) 　　

She has me as one of her best friends.( 引起宾语补足语 ) 　　

（五）.作 副词 的用法。 as作副词，表示程度，意为“同样地”。在“as．．．as．．．”，“not as．．．as．．．”结构中的第一个as是副词，作“和／与．．．(不)一样”解。　　

 e.g. Jack is as tall as his father．　　

杰克和他的父亲一样高。 　　

He doesn't speak English as／so fluently as you．他的英语说得不如你流利 　　

1.        表示“与…等同”,构成倍数比较句型：　　

“倍数+as…as”　　

 e.g　　

 This dress is twice as expensive as that one. 　　

 练习：　　

What a table! I’ve never seen such a thing before. It is ____ it is long.　　

A. half not as wide as　　

B. wide not as half as　　

C. not half as wide as　　

D. as wide as not half　　

 2．as／so long as作“只要”解， 　　

e.g. As／So long as you study hard，you'll make progress．　　

只要你努力，你就会取得进步。 　　

练习：　　

---Have you got any idea for the summer vocation?　　

---I don’t mind where we go ____ there’s sun, sea and beach.　　

A. as if             B. as long as 　　

C. now that         D. in order that　　

3. as far as 只要；远至　　

练习：　　

____ I can see , there is only one possible way to keep away from the danger.　　

A. As long as        B. As far as　　

C. Just as           D. Even if　　

You can see _____ the 　　East　 　Sea　　 from the top of the mountain.　　

A. as long as        B. as far as　　

C. just as           D. even if　　

注意：as far as I know/can see/am concerned表示“据我所知（我看，我所关心的）”　　

4．as much／many as表示数量或程度，　　

作“多达．．．”，“达到．．．之多”解; 如果用于否定句，第一个as 换成so　　

e.g：He can earn as much as 5000 dollars a month．他每月能挣5000美元。 　　

Young people in the 　US　 don’t care so much  about fashion as those in 　　China　　.　　

练习：　　

The more I think about him , the more reasons I find for loving him ___ I did.　　

A. as much as        B. as long as　　

C. as soon as         D. as far as　　

5. as well as为“也，还”之意。 　　

Come early，and bring your brother as well．早点来，把你的弟弟也带来。　　

练习：　　

（1）John plays football ___, if not better than, David.　　

A. as well            B. as well as　　

C. so well            D. so well as　　

（2） Computers have been put into robots and ___ to make mobile phones as well as ____ with medical operations.　　

（电脑被置于机器人中，还被不仅用来辅助医疗手术而且被用来制造手机）　　

  A. used ; to help      B. used ; help 　　

C. using ; helping     D. using ; helped　　

( 3 ) Computers have been put into robots as well as ____ to make mobile phones and ____ with medical operations.　　

（电脑不仅被用来制造手机和辅助医疗手术，还被置于机器人中）　　

 A. used ; help   　　

B. having been used ; to help 　　

C. being used; helping     　　

D. using ; to help　　

6. as good as  “和…一样好”；还可表示“几乎，简直是”，其后接名词，动词或形容词，在功能上相当于very nearly　　

Eg. The work is as good as finished.　　

   这项工作基本完成。　　

   If he finds out, I’m as good as dead.　　

   要是他发现了，我就完了。　　

练习：　　

He said he would do whatever he could to help me , and he was ____ his word.　　

A. as good as        B. as well as　　

C. as much as       D. as many as　　

(六)含 as的其它常见搭配　　

 1．as soon as作“一…就”解，引导时间状语从句。 　　

eg：As soon as I get to Beijing，I'll write to you．我一到北京，就给你写信。 　　

2. as if／though常用来引导方式状语从句，作“好像，仿佛”解。如果从句中讲的是非真实情况，则用虚拟语气。 　　

e.g. She loves the child as if／though he were her own． 她爱这个孩子如同爱自己的孩子。 　　

练习：　　

Eliza remembers everything exactly as if it 　　

_____ yesterday.　　

A. was happening      B. happens　　

C. has happened       D. happened　　

as if／though也可用来引导表语从句，常用在“It appears／looks／seems．．．+as if／though”句型结构中。 　　

e.g. It appears as if／though it is going to clear up．看起来天要晴了。       　　

It seems as if／though he knew nothing about it.他好像对此事一无所知。　　

as if 后还可接to do /doing.　　

Eg. He opens his mouth as if to speak.　　

4．as against/to/for/with　　

as against  与…相对as to （按照一定得标准或原则）“根据，依照”；as for “就…而言”；as with“和…一样” 　　

e.g. There is no doubt as to his honesty．他的诚实是无可置疑的。     　　

练习：　　

____ pandas, golden monkeys are in danger of dying out in our country.　　

A. As against        B. As for　　

C. As to             D. As with　　

5．as a result，as a result of表示“由于．．．的结果”。 　　

e.g. She died as a direct result of the accident．她的死是那次事故的直接结果。 　　

 6．so as to，so．．．as to表示目的或结果。 　　

eg：He studied hard so as to/in order to pass the exam．他努力学习以便通过考试。(表目的)　　

练习：　　

My English teacher’s humor was ____ make every student burst into laughter.　　

A. so as to        B. such as to　　

C. such that      D. so that　　

7.as usual 照例，象往常一样　　

 such as例如　　

 as it be 按原来的样子　　

Steve , as usual , was the last to arrive.　　

Leave the book as it was.　　

Wild flowers such as orchids（兰花） and primroses（报春花） are becoming rare.　　

　 　

　 　

　 　

巩固性练习　　

1.       There at the door stood a girl about the 　　

same height ____.　　

A. as me            B. as mine　　

C. with mine        D. with me　　

2. ____ production up by 60%, the company has had another excellent year.　　

A. As   B. For    C. With   D. Though　　

3. ____ the day went on, the weather got worse.　　

A. With   B. Since    C. While   D. As　　

4. I do every single bit of house work ____ my husband Bob does the dishes now and then.　　

 A. since   B. while   C. when   D. as　　

5. We had better hurry ____ it is getting dark.　　

A. and    B. but    C. as    D. unless　　

6. We cannot figure out ____ quite a number of insects, birds and animals are dying out.　　

 A. that    B. as    C. why   D. when　　

7. Parents should take seriously their children’s requests for sunglasses ____ eye protection is necessary in sunny weather.　　

A. because  B. though   C. unless   D. if　　

8. ____ everybody knows about it, I don’t want to talk any more.　　

 A. For   B. Even  C. Since  D. However　　

9. ____, he doesn’t study well.　　

 A. As he is clever   B. He is as clever  　　

C. Clever as he is   D. As clever he is　　

10. Famous as he is, _____. 　　

A. his works are not widely read　　

B. but his works are not widely read　　

C. however his works are not widely read　　

D. still his works are not widely read　　

11. ____, I have never seen anyone who’s as capable as John.　　

A. As long as I have traveled　　

B. Now that I have traveled so much　　

C. Much as I have traveled　　

D. As I have traveled so much　　

12. ____ is reported in the newspaper , talks between the two countries are making progress.　　

A. It      B. As    C. That    D. What　　

13. ____ is often the case , we have worked out the production plan.　　

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

14. --- It’s burning hot today,isn’t it ?　　

   --- Yes. ____ yesterday.　　

A. As was it             B. So it was 　　

C. As it is               D. So is it　　

15. It is reported that the 　United States　 uses ____ energy as the whole of 　Europe　.　　

A. as twice         B. twice much　　

C. twice much as    D. twice as much　　

16. Our neighbor has ____ ours.　　

A. as a big house as    　　

B. as big a house as 　　

C. the same big house as    　　

D. a house the same big as　　

17. Americans eat ____ vegetables per person today as they did in 1990.　　

A. more than twice    　　

B. as twice as many　　

C. twice as many as    　　

D. more than twice as many　　

18. The WTO cannot live up to its name ____ it does not include a country that is home to one fifth of mankind.　　

A. as long as          B. while   　　

C. if                 D. even though　　

19. After supper she would sit down by the fire, sometimes for ____ an hour, thinking of her young and happy days.　　

A. as long as         B. as soon as   　　

C. as much as        D. as many as　　

20. ---How far apart do they live?　　

   ---____ I know, they live in the same neighborhood.　　

A. As long as         B. As far as 　　

C. As well as         D. As often as　　

21. When a pencil is partly in a glass of　　

water , it looks as if it ____.　　

A. breaks           B. has broken   　　

C. were broken      D. had been broken　　

22. John shut everybody out of the kitchen 　　

____ he could prepare his grand surprise for 　　

the party.　　

A. which   B. when   C. so that  D. as if　　

23. The man we followed suddenly stopped 　　

and looked as if ___ whether he was going in 　　

the right direction.　　

A. seeing             B. having seen 　　

C. to have seen        D. to see　　

24. Tom kept quiet about the accident ____ 　　

lose his job.　　

A. so not as to        B. so as not to   　　

C. so as to not        D. not so as to　　

25. A typhoon swept across tiffs area with heavy rains and winds ____ strong as 113 miles per hour.　　

A. to      B. very     C. so     D. as　　

26. The organization encourages members to meet on a regular basis, ____ them with financial support.　　

A. as well as providing 　　

B. as much as provide   　　

C. as good as providing　　

D. as far as provide　　

27. We’re going to the cinema tonight, why don’t you come along ____?　　

A. though              B. yet 　　

C. however             D. as well　　

28. They own a house in the city ____ a villa in the countryside.　　

A. as many as         B. as much as   　　

C. as good as          D. as well as　　

29. ____ is our belief that improvements in health care will lead to a stronger, more prosperous economy.　　

A. As     B. That    C. This    D. Such　　

30. Pop music is such an important part of society ____ has even influenced our language.　　

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

　 　

　 　

　 　

　 　

Keys:　　

1.           BCDBC   6. CACCA   11. CBDAD  　　

16. BDCAB   21. CCDBD  26. ADDDA