As的用法大全.pdf
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1、精品 精品 As 的用法小结(一)、as 作连词的用法:1.作“在期间,当的时候”引导时间状语从句.注意与 when、while 的用法区别。下列情形时,只用 as,而不用 when 或 while。1)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 sings as she goes to school.He looked behind occasionally as he went forward in the forest.2)表示两个同步发生的动作或行为,意思是随着的发展.如:As time went on/by,she became more and more
2、 beautiful.As children get older,they become more and more interested in everything.3)表示两个短暂行为或事情几乎同时发生.如:I watched her as she read the book.I thought of it just as you opened your mouth.Just as the flying worm hit her face,she gave a loud cry.4)接名词表示某一个年龄段时.如:As a young man,he was active in sports.
3、As a little boy(When he was a little boy)he began to learn to play the piano.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 I was at college,I could speak several foreign languages.When the clock struck twelve,I had slept for 2 hours.I was wandering through the street when I caught sight of a tailors shop
4、有意料之外的意思 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 如:Work while you work.Play while you play.Strike while the iron is hot 趁着 2.As=Since 作既然、由于解,常用来表示已为人们所知或显而易见的原因或理由。如:As hes been ill for ages,I will help him.As/Since youre not feeling well,you may stay at home.As he wasnt ready,we went without him.3
5、.As=in the way that 作像、按照的方式解,引导方式状语从句。如:Do as I told you.Remember,you must do everything as I do.Take the medicine as directed.Maglev trains dont make much noise,as planes do.When at Rome,do as Romans do入乡随俗 As in your country,we grow wheat in the north and rice in the South.4.用于 as-as 或 not/so/as-
6、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 dont speak English so/as well as she does.5.表示虽然,尽管 等,引导让步状语从句,常用倒装语序,模式为:adj./adv./n.+as+主语+谓精品 精品 语+主句。如:Tired as they were,they walked on.Child as he is,he knows a lotFast as he ran,he didnt catch the bus Much as I re
7、spect him,I wont do as suggests.Try as you may,you might fail again Try as he might,Tom could not get out of the difficulties 6.表示也-一样。She is a doctor,as was her husband.(二)、as 作关系代词,引导定语从句,表示正如,这一点.如: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,s
8、o 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.He wished to be such a man as Lei Feng was I was reading the same book as he bought yesterday.This book is not such as I expect Note:He took the police back to the same place where he witnessed the robbery (三)、as 作介词的用法.1.表
9、示好像。如:He dressed as a policeman.They got united as one man 2.表示作为当作。如:I found a job as a guide.3.当某人是某身份时。如:As a child,she was sent to abroad.4.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 Party member,Ill take the lead in everything.(状语)She works as a model.(状语)She has me as one of her best friends
10、.(引起宾语补足语)(四)、作副词的用法 1 表示与-等同。如:This dress is twice as expensive as that one.2 像,如等。As before,he remained unmoved.He doesnt speak English asso fluently as you (3)英语中有很多表示比较的成语。as black as coal as blind as a bat as brave as a lion as bright as day as busy as a bee as cold as ice as easy as ABC as fat
11、 as a pig as hot as fire as light as air a feather as like as two peas beans as poor as a church mouse as rich as a Jew as sound as a bell 状况极佳;十分健康 as fit as a fiddle as strong as a horse as stupid as a donkey as sweet as honey sugar as white as snow as red as blood as bright as a button as wise as
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