AS用法总结.pdf
龙文学校 1 对 1 英语辅导教师发现近几年高考试卷中有关 as 一词的题目出现过很多次，其中 as 或是最佳选项,或是干扰项，或是题干中的关键信息点，涉及到 as 作为连词、介词、关系代词、副词以及习语等各种用法。所以龙文学习校英语辅导教师结合高考真题将 as 的用法归纳如下：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 wasnt until nearly a month later_ I received the managers 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 couldnt 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 didnt 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：Shes unusually tall，as are both her parents./Hes 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 onas,regardas,treatas，consideras，think ofas,seeas等。其中 consideras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.2.引导非限制性定语从句,用来指代整个主句（即先行句)，表示“这一事实，那一情况”。从句可以位于句首、句中或句末。例如：We stand when the national anthem is played，as is the custom.例 6 _ I explained on the telephone，your request will be considered at the next meeting.A。When B。After C。As D.Since 解析:根据句意，选项 C 是正确答案。as 表现的正是本点所讲用法。四、用作副词的 as 修饰形容词或副词，表示程度，意为“同样地”。例如：He swims fast，but I swim just as fast.但它通常构成表示比较的结构“asas”，“not asas”。此结构中第一个 as 是副词，第二个 as 是连词。否定结构中的副词 as 可以由 so 代替.asas possible/one can 也属于此用法。例如：It is generally believed that teaching is as much an art as it is a science.五、用在习语中的 as 由 as 构成的习语很多，常见的有:as soon as“一就”，引导时间状语从句；as/so long as“只要”引导条件状语从句;as if/though“好像,仿佛，引导方式状语从句或表语从句；as to/as for“至于,就而言”；as much/many as“多达；as/so far as“就的限度”；as a result,as a result of“（由于的）结果；as a matter of fact“事实上”；as well“也、还”；A as well as B“不但 A 而且 B”；as it is“照现状看，看样子”，等等。这些习语在高考中可能经常遇到，在高考题中有的作为正确选项，有的作为干扰项，有的出现在题干，值得同学们认真掌握。例如：例 9 I would like a job which pays more,but _ I enjoy the work Im doing at the moment.A。in other wordsB。on the other hand C。for one thing D.as a matter of fact 解析：选项 D 极具干扰意义，但进一步研读会发现本题中的两个分句表达了一件事的两个对立面,故选 B.例 10 People should stop using their cars and start using public transport._.The roads are too crowded as it is。A。All right B。Exactly C.Go aheadD.Fine 解析:本题选项中虽没有 as 内容，但题干中的 as it is 却是解题的关键信息,正确选项为 B。以上所总结的是 as 一词的主要用法及在高考卷中的具体应用，可以看出它词性多，词义广，用法灵活。龙文学校辅导教师希望同学们在复习中一定要理清思路,抓住重点，应用时仔细分析上下文，弄清逻辑关系，才能作出正确选择.
