关于as详细用法.docx

关于英语中出现频率最高的as作为连词，介词，副词详细用法探究如下：作连词的用法【1】as.as的用法as.as意为和一样，表示同级的比较。使用时要注意第一个as为副词，第二个as为连词。其基本结构为：as+ adj./ adv. +as。This film is as interesting as that one.这部电影和那部电影一样有趣。Your pen writes as smoothly as mine.你的钢笔书写起来和我的一样流畅。Runasfast as you can. 你能跑多快就跑多快。Poets are not so scrupulousasyou are. 诗人并不像你那样顾虑多。Imashappy as happy can be. 我快乐极了。其否定式为not as/so +adj./ adv. +as。This dictionary is not as/so useful as you think.这本字典不如你想象的那样有用。I never went through a final exam that was as difficult as that one. 我从来没有碰到过像那次那么难的期末考试。There was no obvious reason why this could not be as good a film as the original. 找不出明显的理由来解释为什么这部片子拍得不如原先的好。若有修饰成分，如twice, three times, half, a quarter等，则须置于第一个as之前。Your bag is twice as expensive as mine.你的袋子比我的贵一倍。几个关于as.as的常见句型：(1)as.as possiblePlease answer my question as soon as possible.请尽快回答我的问题。You ought to rest as much as possible.你应该尽可能多地休息(2)as.as usual/beforeShe looks as pretty as before.她看起来和以前一样漂亮。(3)as long as. (引导条件状语从句)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 asHe 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 asShe cooks as well as her mother does.她烧菜烧得跟她母亲一样好。(6)as little asYou can look forward to a significant cash return by saving from as little as 10 a month.只要每个月存下区区10英镑，你就有希望得到相当可观的现金收益。(7)as many asShe gets as many as eight thousand letters a month. 她一个月里收到的信件多达8,000封。(8)as much +不可数名词+asI havent got as much money as I thought.我带的钱没有我自己想象的那么多。(9)as much asI ate as much as I could.我尽可能得多吃。(10)as early asI leftas early asit was consistent with politeness.我在不失礼的情况下提前离去了。I mailed the letteras early asFriday.我早在星期五就把信寄了She became a film star as early as 1942. 她早在1942年就成了电影名星了.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【2】as用作连词引导时间状语从句s与when，while都是引导时间状语从句的从属连词，含义都是当的时候。但它们有区别：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，具有延续的含义。It was snowing when he arrived at the construction site.他到达工地时，天正在下雪。He was watching TV while his mother was cooking.他母亲做饭时他在看电视。You will grow wiser as you grow older.你会随着年龄的增长而越来越聪明。Another policeman has been injured as fighting continued this morning. 今早又有一名警员在冲突中受伤。All the jurys eyes were on him as he continued. 在他继续陈述的时候，全体陪审员的目光都集中在他身。I was coming inashe was going out. 我进来的时候,他正出去。My pen tremblesasI write it. 我一边写,笔一边颤抖。Helen heard the storyasshe washed. 海伦洗衣服的时候听了这个故事。AsI left the house I remembered the key. 当我离开房间的时候,我想起了钥匙。AsI was coming here,I met your brother. 我来这儿的时候遇见了你哥哥。The boys eyes had slowly moved to himashe had spoken. 他说完时,这孩子的眼光已慢慢地移到他身上。【3】as用作连词引导原因状语从句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，但它们有区别：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。He will succeed because he is in earnest.他一定会成功，因为他很认真。Since you are so sure of it he”ll believe you.既然你对此如此有把握，他会相信你的。Asrain has fallen,the air is cooler. 由于下了雨，空气比较凉爽。Ashe has not ready in time,we went without him. 由于他未能及时准备好，我们没有等他就走了。Asthis question is of great interest,we will discuss it once again. 因为这个问题很有意义,所以我们决定再讨论一次。I cant come tonight,asIm going to a concert. 今晚我不能来,因为我要去听音乐会。I am going to bed,asI am very tired. 我疲倦得很，要去睡了【4】as作连词引导让步状语从句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，但它们有区别：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。Although he is quite old, he still jogs every day.他虽然年纪相当大，仍然每天慢跑。Strange as it may seem, nobody was injured in the accident.这次意外虽然显得令人不可思议，却没有人受伤。However hard he may try, he will not attain his goal.无论他怎样努力也达不到目标。Childasis Paul,he knows enough to tell good from bad. 保尔虽是个孩子，却已懂得区分好坏。Cowardashe was,however,Flashman couldnt swallow such an insult as this. 弗拉西曼虽然是个胆小鬼,也不能忍受这种屈辱。Simpleaswas the idea,the then scientific world would have none of it. 虽然这概念很简单，但当时的科学界却不知道这一点。Intelligentasyou are,I suspect you will fail. 尽管你聪明,我还是猜想你会失败。Surroundedaswe were by the enemy,we managed to march forward. 尽管我们被敌人包围了,我们还是决心向前进。Quicklyasit spread and threatening as it appeared to be,the result was doomed from the start. 尽管起义发展很快,声势浩大,但它从开始时起就注定了要失败。He was unable to make much progress,hardashe tried. 尽管他努力了,但他没能取得多少进步。TryasI might,I couldnt lift the stone. 无论我怎么努力也搬不动这块石头。【5】as作关系代词的用法关系代词as引导定语从句时，既可以单独使用，也可以与其他词连用，其用法要比that和which更为复杂。(1)as引导定语从句与其他词连用用于the same.as结构中This is the same book as I read last week.这本书和我上周读的那本是一样的。用于such.as结构中I don”t like such books as he recommends.我不喜欢他推荐的那些书。用于so +adj. + a/an + n. (单数) + as 结构中I am not so strong a man as I was.我已经没有从前那么强壮了。(2)as单独引导定语从句as单独引导非限制性定语从句时，先行词可以是一个词，也可以是一个句子或短语。As you can see, were still working. 如你所见，我们仍在工作。We were sitting, as I remember, in a riverside restaurant. 我记得我们当时是坐在一个河畔的餐馆里。She is late, as is often the case.她迟到了，这是经常的事。(先行词是整个主句)To shut your eyes to facts, as many of you do, is foolish.对事实视而不见-你们好多人都是如此的愚蠢。(先行词是不定式短语)As is announced in todays papers, all the schools will reopen on 1 September.句中的as指学校将在9月1日重开这件事。【6】引导方式状语从句Ill behave toward them as I would like to be treated. 我会以希望别人对待我的方式来对待他们。When in Rome,doasthe Romans do. 入乡随俗。State the factasit is. 照实讲来。Balloons float in the airasboats float on water. 气球飘在空中如同船浮在水上一样。Things were almostasthey had been before. 事情还像以前一样。She looks forward,asdoes her secretary,to the completion of the building. 她像她的秘书那样盼望工程竣工。【7】as作介词的用法as作介词，意思是作为，以身份。He came to China as a tourist five years ago.他五年前以游客的身份来过中国。He has worked as a diplomat in the US, Sudan and Saudi Arabia. 他曾任驻美国、苏丹和沙特阿拉伯的外交官。The news apparently came as a complete surprise. 这个消息显然让人大吃一惊。Asa child,he lived in Japan. 他小的时候住在日本。Asa schoolboy,he showed every sign of genius. 当他还是个小学生的时候,就显示出了天资聪慧。He workedasa cashier in a bank. 他在一家银行干过出纳。Under the new arrangement I continuedasmanager. 根据新的安排,我继续担任经理职务。This chair can also functionasa bed. 这张椅子可兼做床用。This watch was given measa birthday present. 这只表是作为生日礼物送给我的。She is knownasMary. 她叫玛丽。France is famousasa wine-producing country. 法国以产酒国著称于世。He does this jobasa skilled labour. 他做起这个活像个熟手。He appearedasa man in a trance. 他显得神思恍惚【8】as作副词的用法as 作为副词，意思是相同地，同样地。They don”t have as many airplanes.他们没有同样多的飞机。She isastall as her mother. 她和她母亲一样高。He runsasfast as Paul. 他跑得和保罗一样快。Ade doesnt play halfaswell as Cage. 艾德演奏的水平不及凯奇的一半。Smith worksashard as you use