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高三英语复习课 as 用法归纳
as 一词在高中课本中,看起来简单,但用法很多,经常出现,而又不易掌握。 主要表现在词性多,词义广,用法灵活。现将其用法归纳如下:


as 作介词

1. 作 “如,像” 充当,作为解。 (1) They got united as one man (2) As a writer, he was famous. (3) Don’t _____ him as a child. He can tell right from wrong. 2 As 作为介词,常和以下动词连用。 regard…as/be known as/consider…as use…as/ describe…as/be remembered as work as/ act as/be honored as/

II.as 作连词,主要引导以下状语从句:
1.as...as 意为"和……一样",表示同级的比较。第一个 as 为副词,第二个 as 为连词。 其基本结构为:as+ adj./ adv. +as。例如: (1)This film is as interesting as that one.这部电影和那部电影一样有趣。 (2)Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。 其否定式为 not as/so +adj./ adv. +as。例如: This dictionary is not as/so useful as you think.这本字典不如你想象的那样有 用。 若有修饰成分,如 twice, three times, half, a quarter 等,则须置于第一个 as 之 前。例如: Your bag is twice as expensive as mine.你的袋子比我的贵一倍。

2.As conj 引导时间状语从句,当??时,随着,一边??一边??

He shouted aloud as he ran along. We get wiser as we get older. 改错 1. While she grew older she gained in confidence .

2. 3. 4. 5.

He was watching TV as his mother was cooking . The little girl listened to music when she did her homework . Hardly had we sat down to supper while the phone rang . As I was walking ,I noticed a bird fly by.

3. 引导原因状语从句,与 because 的用法相近。 ① As it was getting very late, we soon turned ② We must stop writing now, as I have rather a lot of work to do. 填空 1---why were you absent from the meeting ? ---_______ I was ill. 2.We shall not go to the park , _____it is raining. 3.________everybody is here let’s begin our prom。 4.He doesn’t know about it , _____for he didn’t see the film . back.

4. 引导方式状语从句,作“正如,好象,按照”解。主要的句式有 as if (as though); just as; just as…as . e.g (1)When in Rome, do as Romans do. (2)When a pencil is partly in a glass of water, it looks as if it were broken. ★ (3)I”ve changed my plan_____. A. As was told to B. as told to (4)Look!The cloud are gathering. It looks as if it ____ rain. A. is going to B. were going to (5)He glanced around as if ______. A. in search of something B. searching for something 5. 引导条件状语从句。主要句式有: as long as /so long as 只要 e.g As long as you study hard, you will make great progress. 6. 引导让步状语从句;作“虽然,尽管”解。这时从句常用倒状语序,即把从句中的表语, 状语或动词原形放在 as 之前。e.g ① Child as she is, she knows a lot. ★ → Though she is a child, she knows a lot. ② Busy as he is, he insists on studying. → Though he is busy, he … . ③ Try as he might, Tom could not get out of the difficulties. → Though he might try, Tom could not get out of the difficulties.


As 作关系代词

1.引导限制性定语从句,用在“such… as”, “the same …as/the same as”等结构中, 常译作“像……一样的人或物”“凡是……的人或物” , 。e.g He wished to be such a man as Lei Fang was. My bike is the same as yours. 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“正如” “好 像” 。这个分句可以放在句首,句中,或句末。e.g As we expected, he completed his task with great success.


The compass was invented in China, as we know now. 若非限制性定语从句中的谓语动词是 be said be known, be expected, be reported , be announced 等结构时,不论是在句首,句中, 句末,都必须 as 用来引导. e.g. As is known to us, Taiwan is a part of China. As relative pron. 引导定语从句“像. 正如” 。 分析结构,理解句意: 1. He wished to be such a man as Langlang was. 2. This is the same life as I long for. 3. As is known to all, the Internet plays a significant role in people’s life. 选词填空:as, which ,that, it ,what, 1. He is such a lovely student ________ everyone likes. 2. He is such a lovely student ________everyone likes him . 3. He bought the same book ________I did last week. 4. He picked up the same book ______ I lost last week. 5. He passed the exam, ______ made his father delighted. 6. She is late, ______ is often the case. 7. _______ is known to us all that China population in the world. 8. ______ is known to us all, China has the largest population in the world. 9. ______ is known to us all is that China has the largest population in the world.


含 as 的固定词组

as soon as→引导时间状语从句。 so/as far as I know→在句中作插入语。 意思是“据我所知” 。 As/So far as I know, he will come here next Monday. as well as→并列连接词组,意思是: “和, 同” 。当其连接两个并列主语时,谓语动词应 与前面的主语在数上保持一致。也可以和短 语 not only…but also 进行替换。 e.g. My parents as well as my elder sister _____ music.(enjoy) 试比较下面句子。 My elder sister as well as my parents _______ music. Tom studies Japanese as well as Chinese. Tom studies not only Chinese but also Japanese. ★★ as well→译为“也,还”经常放在句尾。与 too, also 同义词。e.g. Come here early, and bring your brother as well. so as to do sth./so…as to do sth.→引导 目地或结果状语。e.g. He studies hard so as to pass the exam. He was so strong as to carry the heavy box. such as→意为“例如,诸如”可用来引入同位语,举一例或数例说明它与之同位词的词 所 含的具体内容。 There are different forms of energy, such as heat energy, light energy, sound energy and etc. as to(=as for/as regards)关于,至于 as much as/as many as “ 多达…,达到… 至多” He can earn as much as 500 dollars a day. as a result as a result of(由于……的结果)


as a whole(就整体来说) as follows(如下 ) as usual (照常) as a (general) rule(通常) as a matter of fact(事实上) may as well do (1)as...as possible Please answer my question as soon as possible.请尽快回答我的问题。 (2)as...as usual/before She looks as pretty as before.她看起来和以前一样漂亮。 (3)as long as... It took us as long as three years to carry out the plan.我们花了长达三年 的时间才完成这项计划。 (4)as far as He walked as far as the railway station yesterday evening.昨天傍晚,他一直 散步到火车站。 (5)as well as She cooks as well as her mother does.她烧菜烧得跟她母亲一样好。 一些带有 as...as 结构的常见短语归纳: as busy as a bee 像蜜蜂一样忙碌 as easy as ABC 像 ABC 一样容易 as deep as a well 像井一样深 as light as a feather 像羽毛一样轻 as soft as butter 像黄油一样软 as rich as a Jew 像犹太人一样富裕 as good as _________________ as quickly as possible

① ② ③ ④ ⑤

She died as a result of the The reasons are as above(as The machine runs as usual. As a matter of fact, air is His father gets up early as

accident. follows). a gas.

a rule.

1. Peter”s jacket looked just the same as Jack”s, but it cost ____ his.(09 辽宁) A.as much twice as B. twice as much as C. much as twice as D. as twice much as 2. Mrs.Black took the police back to the same place as she witnessed the robbery.(改错) 3.Tim is in good shape physically ____ he doesn’t get much exercise. A. as if B. even though C. as though D. as long as 4.Just use this room for the time being, and we’ll offer you a large one ____ it becomes available. A. as soon as B. unless C. as long as D. as though 5. ---Our holiday cost a lot of money. ---Did it? Well, it doesn’t matter_ you enjoyed yourselves. A. as soon as B. as long as C. as much as D. as far as 6. In ancient times, people rarely travelled long distances and most farmers only travelled ____ the local market. A. as soon as B. as long as C. as much as D. as far as 7. Les’s learn to use the problem we are facing ____ a stepping-stone to future success. A. to B. for C. as D. by 8. Mount Wuyi is such an attractive place of interest ____ everyone likes to visit. A.that B. as C. which D. while 9. ---Excuse me, did you notice whether the No.108 bus had gone by? ---Not____ I’ve been standing here. A. as B. when C. since D. while 10._____ I explained on the phone, your request will be considered at the next meeting. A. That B. As C. Which D. What 11. ______, 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 在今天的英语课上,我们总结了 as 的一些主要用法。实际上,我们在使用 as 的时候容易 出错,因为 as 可能有时令人困惑。众所周之,as 作为连词(conjunction)的部分较难较 复杂。尽管 as 用一定的难度,我们相信只要依照老师指导,多感受英语气氛,培养英语思 维,配以习题巩固,随着理解的深入,我们最终成功!


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