[一个语法考点的总结！Like和As]Like和As的混合考题特点：选项中同时存在As结构和Like结构。（注意：只有like或者只有as的不属于此类）两种结构都有可能成为正确答案，一般情况下As结构和Like结构同时在选项中出现...+阅读
as ... as 译为像 ..一样
as和when、while都是引导时间状语的连词，但是用when时，从句的动作可以与主句的动作同时发生，也可以先于主句的动作发生；用while时，从句的动作 为一过程，主句动作与从句动作同时进行或在从句动作过程中发生；用as时，主句和从句的动作同时发生，有延续的含义
as soon as 译为一... 就 ... 由as soon as 引导的时间状语从句主将从现
as,because,since都可以表示因果关系，连接原因状语从句，含义是＂因为，由于＂，但because表示的语气最强；as一般放在句首，语气较弱，较口语化；since常常用在书面语中，表示多为对方已知的、或稍加分析便可得知的原因，有时可译作＂既然＂。
as与although （或though）,however （或no matter how）等都可以引导让步状语从句，含义是＂虽然，尽管＂，但although语气稍正式些，可放在句首，也可放在句中，主句中不能再用but，但可以用yet;as所表示的语气较强，引导的让步状语从句用倒装语序；however引导让步状语从句时，它的后面可跟形容词或副词，也要用倒装语序
the same as ... 译为和...一样
as的用法及意义
as这个词看似简单，但用法却是很多的，对它的正确理解关系到英语应用能力的提高，因此我们有必要对其用法和搭配进行详细阐述。
一、as作介词1. 区别as和likeas作为介词时，可以表示“像……”，这时它可以和like互用；as还可以表示“以……身份”或“作为……”，“当作……”，但like不能。e.g. I) They lived and fought among the people as “fish in water”. (as相当于like)II) As a scientist, he was dedicated to （致力于） the truth. （这里不可以用like）II) They talked as old friends. （他们确乎是老朋友。）à They talked like old friends. （他们像老朋友一样。）2. as引导的介词短语在句中可以充当：a） 宾语补足语e.g. I) She spoke of me as her dearest friend.II) The plan struck me as very much worthwhile.III) You mustn't think of me as (being) unhappy.b） 主语补足语 e.g. I) She is well-known as being very cheerful.II) He is sometimes portrayed as belonging to another century.III) That picture is looked upon as very valuable.常用于这类结构的动词有：accept, consider, describe, elect, interpret （理解）， look upon, perceive, recognize, refer to, regard, see, strike, take, think of, treat, view等等。
二、as作连词1. 作“当……的时候”，引导时间状语从句。注意与when、 while的用法区别。A. when作＂当……的时候＂解，可以指较短的
（一点）时间，也可指一段时间。e.g. I)When he was at college, he could speak several foreign languages.II) When the clock struck twelve, all the lights in the street went out. B. 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。e.g. Work while you work. Play while you play.C. 但属下列情形时，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……”。e.g.I)The girl dances as she sings on the stage. II) He looked behind from time to time as he went forward.2）表示两个同步发展的动作或行为，译为“随着……”。e.g. I) As time went on / by, she became more and more worried. II) As children get older, they become more and more interested in the thingsaround them. 3）表示两个短促行为或事件几乎同时发生。e.g. I) I thought of it just as you opened your mouth. II) Just as the flying worm hit her face, she gave a loud cry.4） 后接名词表示某一年龄段时，用as。e.g. As a young man, he was active in sports. 2. as=since， 作“既然”、“由于”解，引导原因状语从句，常用来表示已为人们所知或显而易见的原因或理由。e.g. I)As / Since you're not feeling well, you may stay at home.II) As he wasn't ready in time, we went without him.3. as=in the way that， 作“像”、“按照……的方式”解，引导方式状语从句。e.g. I)He speaks English as Americans do.II) Remember, you must do everything as I do.4. 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。e.g. I) They helped the old man as often as possible. II) I don't speak English so / as well as he does. 5. 作“虽然”、“尽管”解，引导让步状语从句。常用倒装语序，即adj. /adv. / n.+ as +主语+谓语+主句。e.g. I) Tired as they were, they walked on.II) Child as he is, he knows a lot. (child前不用冠词)6.as引导类比从句，与so 连用，表示“正如……所以……”。e.g. Just as French people enjoy their wine, so the British enjoy their beer.如同法国人喜欢他们自产的葡萄酒一样，英国人喜欢他们自产的啤酒。
三、as作副词1.表示同等程度、质量、数量等，作“一样地……”解释。e.g. I) Steve runs fast, but I run just as fast.史蒂夫跑的很快，但是我跑的和他一样快。II) Tom has a lot of money, but I don't have as much.汤姆有很多的钱，而我的钱没有他多。2.用在形容词或者-ed形式的过去分词前，相当于形容词或过去分词作定语，但as仍然保留其原来的词汇意义。e.g. I) In the dead of night I was suddenly wakened by a cry as made by a wolf.在寂静的黑夜里，我突然听到了一声如同狼嚎一样的叫声。II) The old man began to describe the accident as seen through the eyes of a witness.这位老人开始描述这一起事故，如同是一个证人亲眼目睹了一般。
四、作as作关系代词，引导定语从句，不仅可以代替一个名词，而且可以代替整个句子或一件事，通常译作 “正如这一点”，“如……一样”。e.g. I) As is known to everybody, the moon travels around the earth once every month.如同大家所知道的一样，月亮每月围绕地球旋转一次。II) As has been said before, grammar is not a set of dead rules.如同以前说过的一样，语法并不是一套死规则。III) Such a clever girl as she can learn anything quickly.像她这样聪明的女孩子学任何东西都很快。IV) It was absolutely bad manners to get into people's room without knocking, as quite a few young people are doing every day.不敲门就进入别人的房间绝对是不文明的行为，现在很多年轻人每天都这么干。
五、as构成的固定词组1.as可以...
as是什么意思？
1. 跟...一样地，同样地 Sam is as rich as Alexander. 山姆像亚历山大一样富有。 2. 如同；例如 Such animals as foxes and squirrels have bushy tails. 有些动物，如狐和松鼠，有蓬松的尾巴。 prep. 1. 作为，以...的身份 She works as an interpreter in that company. 她在该公司里担任翻译员。 2. 当作 She didn't think much of him as a painter. 她对他作为一位画家评价不高。 3. 像；如同 The old woman was dressed as a young lady. 这位老妇人打扮得像一位年轻人。 conj. 1. 像...一样；依照；像 You ought to do as Paul tells you. 你应按照保罗吩咐的做。 The work is not so difficult as you imagine. 这工作不像你想像的那么困难。 2. 当...时 As she left the room she remembered that book. 她离开房间时想起了那本书。 3. 随着 As the sun rose the fog dispersed. 太阳一出来，雾随之消失。
4. 因为 We didn't know what to do as we were just visiting there. 我们不知道该怎么办，因为当时我们仅仅在那里作访问。 5. 虽然 Tired as he was, he sat up late. 他虽然疲倦，可仍然很晚才睡。 pron. 1. （与such,the same,as等连用，引导关系从句）与...相同的事物（或人） He has earned as much money as I have. 他赚的钱和我赚的一样多。 She felt just the same as he did. 她和他的感受相同。 There is a general rise in prices such as occurred in the late 60's. 物价普遍上涨，跟六十年代末一样。 2. （引导从句，对前述内容作补充）本情况，该事实 She has married again, as was expected. 她已再婚，这是意料中的事。 We are tired, as anyone can see. 我们累了，这是有目共睹的。
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