as if用法 as用法( 三 )

16.as usual像平常一样 She would go homeas usual for Christmas.
17.such as像……之类，例如 He knows a lot of poets ，such as Shelley and Byron.
18.may(might /could)as well不妨，不如 You may as well wait upstairs. you might as well throw the money into the sea as lend it to him.
19. as a rule作为一个常规,通常,习以为常?As a rule, we keep records on all the experiments so that we may have enough data.
20. As a whole作为一个整体(来看)?We should analyze the problem as a whole.
21. As above如上?It has been explained as above.?
22. as…as ever像往常一样……She works as hard as ever.她工作一贯努力。?
23. as it is (was)①在句首,“但在实际上”;②在句末,“照原来样子” 。As it was, we did help them.事实上,我们的确帮了他们。?Leave the things as they are.别动这些东西。?
24. as matters stand按目前情况来说 As matters stand, he does not like to make the plan public.就目前情况而论,他不愿公开那个计划。
AS用法总结
一、用作连词的as
1. 引导时间状语从句，表示“当……的时候”，其用法与when和while类似。例如：As a child (When he was a child), she was sent to six different schools.此用法中as多表示从句与主句动作同时进行，意为“一边……一边……”，一般不与状态动词连用。例如：She sang songs as she did her homework.
as 还可以表示一动作紧接着另一动作发生，说明另一动作的结果，有“随着……”的含义。例如：As time went by, we found he was an honest man./As he grew older, he lost interest in everything except gardening.
例1 It wasn’t until nearly a month later________ I received the manager’s reply.
A. since B. when C. as D. that
解析：本题的as中与when一起作为干扰项，容易使考生往时间状语从句上思考，事实上本题是强调句，正确选项是D 。
2. 引导原因状语从句，表示“由于，因为”，相当于because, 但通常置于句首。例如： As he is a qualified doctor, I trust his advice on medical matters.
例2 _____ modeling business is by no means easy to get into, the good model will always be in demand.
A. While B. Since C. As D. If
解析：本题中as干扰性很强，很多考生误以为是原因状语从句，但仔细分析不难发现正确答案应是A(while表示“只要”) 。
3. 引导让步状语从句，通常可与although或though通用，但语序不同，although或though用于句首，as用于倒装结构。例如：Young as I am, I already know what career I want to follow. /Although(或Though)I am young, I already know what career I want to follow. as 表示让步用于倒装结构，通常将从句的表语、状语或动词前置。如果表语有冠词a/an, 需去掉。例如：Great scholar as he is, he is lacking in common sense./Much as I like you, I couldn’t live with you. 例3 _____ he has limited technical knowledge, the older worker has a lot of experience.
A. SinceB. Unless C. As D. Although
解析：as 虽然有引导让步状语从句用法，但本题不是倒装结构，故正确答案应是D 。
4. 引导方式状语从句，表示“如，像” 。例如：When in Rome, do as Romans do./Do to others as you would have others do to you.
例4 We wanted to get home before dark, but it didn’t quite ________ as planned.
A. make outB. turn out C. go onD. come up
解析：本题考查动词词组辨析，题干中的“as planned”给同学们提供了重要信息，答案选B 。
5. 固定句型：“主句，as +be/do+主语”表示“也一样” 。例如：She’s unusually tall, as are both her parents./He’s a doctor, as was his wife before she had children.
二、用作介词的as
1.表示“如，像” 。例如：They got united as one man./She spoke of me as her dearest friend.
2.表示“作为、当作” 。例如：As a League member, you should think more of others.
3.与某些动词搭配，表示“把……当作……”，如：look on…as…, regard…as…, treat…as…, consider…as…, think of…as…, see…as…等。其中consider…as…中的as可以省略。as与famous或known搭配，表示“作为……而出名” 。
例5 Linda worked for the Minnesota Manufacturing and Mining Company, ________ as 3M.
A. knowingB. known C. being knownD. to be known
解析：如果熟悉be known as这一短语，运用有关非谓语动词的常识，可选出正确答案B 。
三、用作关系代词的as
1. 引导限制性定语从句，先行词前通常有as, so, such, same等修饰语。例如：He will marry as pretty a girl as he can find./My hometown is no longer the same as it used to be./As many people as are present will be given a present.在此种用法中，同学们要注意与结果状语从句的区别。比如：A: The teacher asked us such a difficult question that none of us could answer it. B: The teacher asked us such a difficult question as none of us could answer.A句为结果状语从句，而B句则是定语从句。

as if用法 as用法( 三 )

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