as的用法归纳PPT幻灯片课件.ppt

1、1as用法归纳用法归纳2 asasconj.adv.pron.prep.固定用法固定用法引导定语从引导定语从句句引导引导时间时间状语从句状语从句引导引导原因原因状语从状语从句句引导引导让步让步状语从状语从句句引导引导方式方式状语从状语从句句引导引导比较比较状语从句状语从句PRACTICE3一、作副词一、作副词l“相同地”，“同样地”。They dont have as many airplanes.l 他们没有同样多的飞机。lAs before he remained unmoved.l他和以往一样无动于衷.lThe “h” is silent as in “hour”.l在hour这个词中,

2、 h不发音.4区别区别连词连词时间时间与与主句谓语主句谓语动动作作只用只用asaswhenwhen点、段点、段先于先于、同时发生同时发生whilewhile段、过程段、过程过程中过程中、同时发同时发生生asas当当的的时候时候同时进行同时进行 同一个人的两种动作交替进行同一个人的两种动作交替进行, , “一边一边, ,一边一边”。 两个同步发展的动作或为两个同步发展的动作或为, ,“随着随着” 表示两个短促行为或事件表示两个短促行为或事件几乎几乎同时发生。同时发生。1.1.引导时间状语从句引导时间状语从句5vJohn was having his dinner when I saw him.J

3、ohn was having his dinner when I saw him.v 当我看到约翰的时候，他正在吃饭。当我看到约翰的时候，他正在吃饭。vShe can write only when the baby is asleep. She can write only when the baby is asleep. v只有婴儿睡着的时候，她才能写作。只有婴儿睡着的时候，她才能写作。vWe must strike while the iron We must strike while the iron is hotis hot. . v趁热打铁。趁热打铁。vWhile we While

4、 we were readingwere reading, the teacher came in. , the teacher came in. 我们正在读书的时候，老师走了进来。我们正在读书的时候，老师走了进来。vTheThe girlgirl dancesdances asas sheshe singssings onon thethe stage.stage.v那个女孩在舞台边唱歌边跳舞。那个女孩在舞台边唱歌边跳舞。6vHeHe lookedlooked behindbehind fromfrom timetime toto timetime asas hehe wentwent fo

5、rward.forward. v当他朝前走时，不时地向后看。当他朝前走时，不时地向后看。vAsAs timetime wentwent onon / / by,by, sheshe becamebecame moremore andand mormore e worried.worried.v 随着时间的流逝，她变得越来越焦虑。随着时间的流逝，她变得越来越焦虑。vAs he grew older, he became more As he grew older, he became more intelligent.intelligent. v随着他年龄的增长，他变得更有才智了。随着他年龄的增

6、长，他变得更有才智了。vI I thoughtthought ofof itit justjust asas youyou openedopened youryour moutmouth.h. 恰好在你开口时，我想到了它。恰好在你开口时，我想到了它。vJustJust asas thethe flyingflying wormworm hithit herher face,face, sheshe gavgave e a a loudloud cry.cry. v恰巧在飞虫撞到她脸上时，她大哭起来。恰巧在飞虫撞到她脸上时，她大哭起来。72. 2. 引导原因状语从句引导原因状语从句vbecaus

7、e because 语气最强语气最强, , 用于用于回答回答whywhy 提出的或提出的或人们不知道人们不知道的问题；的问题；vasas，一般放句首一般放句首，语气弱，口语化，说明，语气弱，口语化，说明比较明显比较明显的原因；的原因；vsincesince书面语中，表书面语中，表对方已知的、或稍加分析便可得知的原因对方已知的、或稍加分析便可得知的原因，有时译作有时译作“既然既然”。vfor for 表表附加的解释、说明或推理附加的解释、说明或推理。不放句首。不放句首vI do it because I like it. I do it because I like it. vHe didnHe

8、 didnt go to school because he was ill.t go to school because he was ill.vSince many of the customers work during the day, Billy Since many of the customers work during the day, Billy has to collect the money at night. has to collect the money at night. vAs he is a League member, he takes the lead i

9、n As he is a League member, he takes the lead in everything in his class.everything in his class.vAs she has been ill perhaps sheAs she has been ill perhaps shell need some help. ll need some help. vIt must have rained last night, for the ground is wet.It must have rained last night, for the ground

10、is wet.83. 3. 引导让步状语从句引导让步状语从句v“虽然，尽管虽然，尽管”，valthoughalthough语气稍正式些，可放在句首，句中，不能再用语气稍正式些，可放在句首，句中，不能再用butbut，但可以用，但可以用yetyet；vasas所表示的语气较强，引导的让步状语从句用倒装语序；所表示的语气较强，引导的让步状语从句用倒装语序；vhoweverhowever引导让步状语从句时，引导让步状语从句时，后面可跟形容词或副词后面可跟形容词或副词，也要用，也要用倒装倒装语序。语序。vAlthough they are poor they are happy.Although th

11、ey are poor they are happy.vAngryAngry as he was, he managed to speak calmly. as he was, he managed to speak calmly. vHowever hardHowever hard the question is, he can answer it. the question is, he can answer it. v注意：注意：当当asas引导让步状语从句时，句子的倒装语序有以下三种形式：引导让步状语从句时，句子的倒装语序有以下三种形式：v(1). (1). 形容词或副词形容词或副词+

12、as+as+主语主语+ +连系动词连系动词bebe或实义动词或实义动词。例如：。例如：vRich as he is, he never spends a cent on clothes. Rich as he is, he never spends a cent on clothes. vMuch as I admire his courage, I donMuch as I admire his courage, I dont think he acted wisely. t think he acted wisely. v(2). (2). 名词名词+as+as+主语主语+ +连系动词连系

13、动词bebe ( (注意句首的注意句首的名词不带冠词名词不带冠词) )。vChild as he is, he knows a lot. Child as he is, he knows a lot. vBoy as he was, he was chosen king. Boy as he was, he was chosen king. 。v(3). (3). 实义动词实义动词+as+as+主语主语+ +助动词助动词vTry as he may, he never succeeds.Try as he may, he never succeeds.vChange your mind as

14、you will, you will gain no additional support. Change your mind as you will, you will gain no additional support. 94. 4. 引导方式状语从句，引导方式状语从句，v“如如”，“像像”，“按照按照的方式的方式vI want you to tell my friend your very I want you to tell my friend your very interesting experience exactly as you have told interesting

15、experience exactly as you have told it to me. it to me. v我想让你像给我讲述的那样，给我的朋友讲一讲你那段我想让你像给我讲述的那样，给我的朋友讲一讲你那段极其有趣的经历。极其有趣的经历。vRemember,Remember, youyou mustmust dodo everythingeverything asas I I do.do. v记住，你必须按照我做的那样做一切。记住，你必须按照我做的那样做一切。v注意：注意：likelike在非正式语体中可以有与在非正式语体中可以有与asas相同的用法相同的用法. .vI canI cant

16、 sing like I used to.t sing like I used to.v我不能像以前那样唱歌了。我不能像以前那样唱歌了。vHe writes just like his brother did when he was He writes just like his brother did when he was young. young. v他现在写文章正像他哥哥年轻时写文章一样。他现在写文章正像他哥哥年轻时写文章一样。105.5. 引导比较状语从句引导比较状语从句v, ,用于用于“as.as.as.as.或或notnot so/so/ as.as.as.as.”中中, ,前一

17、个前一个asas是副词是副词, ,后一个后一个asas是连词，是连词， “如如( (不如不如) )一样一样”。 v(1). You hate her as much as I (=as I hate her)(1). You hate her as much as I (=as I hate her)v你恨她像我恨她一样深。你恨她像我恨她一样深。v(2). I(2). I dontdont speakspeak EnglishEnglish so/so/ asas wellwell asas hehe does.does. v注意：句中连词注意：句中连词asas后面的代词实际是省略了与主句相后

18、面的代词实际是省略了与主句相同的部分，同的部分，vAt your age you canAt your age you cant expect to play football t expect to play football as well as me (= as I do). as well as me (= as I do). vYou hate her as much as you hate me. You hate her as much as you hate me. v你恨她像恨我一样深你恨她像恨我一样深. .11三、作代词三、作代词v(1). (1). 用于用于the sam

19、e.asthe same.as结构中结构中v(2). (2). 用于用于such.assuch.as结构中结构中v(3). (3). 用于用于“so +adj. + a/an + n. (so +adj. + a/an + n. (单数单数) + as) + as ”vThis is the same watch as I have lost. This is the same watch as I have lost. v这块手表跟我丢失的那块一样。这块手表跟我丢失的那块一样。vI donI dont like such novels as you recommend. t like suc

20、h novels as you recommend. 我不喜欢你推荐的那些小说。我不喜欢你推荐的那些小说。vI am not so strong a man as I was.I am not so strong a man as I was.v 我已经没有从前那么强壮了我已经没有从前那么强壮了。122. as单独引导定语从句单独引导定语从句vasas单独引导定语从句时，单独引导定语从句时，先行词先行词可以是一个可以是一个词词，也可以是一个也可以是一个句子句子或或短语短语。vShe is late, as is often the case. She is late, as is often

21、the case. v她迟到了，这是经常的事。她迟到了，这是经常的事。( (先行词是整个主句先行词是整个主句) )vTo shut your eyes to facts, as many of you To shut your eyes to facts, as many of you do, is foolish. do, is foolish. v对事实视而不见对事实视而不见-你们好多人都是如此的愚蠢。你们好多人都是如此的愚蠢。( (先行词是不定式短语先行词是不定式短语) )vAs has been said above, grammar is not a As has been said

22、 above, grammar is not a set of dead rules. set of dead rules. v正如前面所说，语法不是一套死条文。正如前面所说，语法不是一套死条文。13vSpiders are not insects, as many people think. = Spiders are not insects, as many people think. = vSpiders are not insectsSpiders are not insects. . But many people think they are. But many people th

23、ink they are. v许多人认为蜘蛛是昆虫，但蜘蛛并不是昆虫。许多人认为蜘蛛是昆虫，但蜘蛛并不是昆虫。vShe did not, as her friend had feared, open the case.=She did not, as her friend had feared, open the case.=vShe did not open the case. But many people had feared She did not open the case. But many people had feared she did. she did. v她没有打开盒子，

24、而她的朋友就是怕她当面打开盒子。她没有打开盒子，而她的朋友就是怕她当面打开盒子。v Greenland was not a continent, as people thought.=Greenland was not a continent, as people thought.=vGreen was not a continent. But people thought it was.Green was not a continent. But people thought it was.v格陵兰并不像人们所想象的那样是一个大陆。格陵兰并不像人们所想象的那样是一个大陆。vI live a

25、long way from work, as (which) you know. I live a long way from work, as (which) you know. v我住得离工作单位很远，这你是知道的。我住得离工作单位很远，这你是知道的。vAs you will find out, I will never let you down. As you will find out, I will never let you down. v你将会发现，我绝不会使你失望的。你将会发现，我绝不会使你失望的。vTaiwan is, as you know, an inseparable

26、part of China. Taiwan is, as you know, an inseparable part of China. v你们知道，台湾是中国不可分割的一部分。你们知道，台湾是中国不可分割的一部分。14四、作介词，四、作介词，v1. 1. 表示表示 “好像好像( (某人某人) )”v2. 2. 表示表示“作为，当作作为，当作”，v3. 3. 表示表示“当某人是当某人是( (某身份某身份) )时。时。v4. 4. 表示表示“因某人是因某人是( (某身份某身份) )”，15vThey entered the building disguised as cleaners. v他们化

27、装成清洁工人的模样进入大楼。他们化装成清洁工人的模样进入大楼。vI found a job as a teacher. v我找了一份教师的工作我找了一份教师的工作vAs a child, she was sent to three different countries. v她儿时去过三个不同的国家。她儿时去过三个不同的国家。vAs her private secretary he has access to all her correspondence. v他是她的私人秘书，能接触到她所有的信件。他是她的私人秘书，能接触到她所有的信件。16vasas引导的介词短语大多用引导的介词短语大多用作

28、状语作状语，asas译为译为“作为作为”，vAs a Party member, Ill take the lead in everything. (状语状语) vShe works as a nurse. (状语状语) vTom has me as one of his best friends. (引起宾引起宾语补足语语补足语)vas “以实际的身份或地位以实际的身份或地位”。vlike “与与相似，以与相似，以与相类似的方式相类似的方式”。vHe spoke as a teacher.v他作为老师发言他作为老师发言./他以老师的身份发言他以老师的身份发言.vHe spoke like a

29、 teacher.v他讲话很像是老师他讲话很像是老师”。17五、用于一些固定搭配五、用于一些固定搭配v1. asgood as差不多，几乎差不多，几乎v2. suchas, suchas 像像这样的这样的v3. such as 例如例如v4. asfor=with regard to sb/ sth.至于某人（某事物）至于某人（某事物）v5. asto=as regards sth.至于某事物；提到某事至于某事物；提到某事物物v6. soasto 以便以便,为了为了v7. as a matter of fact 事实上，其实事实上，其实v8. as a result 作为结果作为结果v9. a

30、s a result of 由于由于/作为作为的结果的结果v10.as a rule 通常；一般说来通常；一般说来v11.as a whole 总体上总体上18v as far as 那么远，直到；达到那么远，直到；达到程度；程度；v as far as I know/can see 就我所知就我所知/依我看依我看v so/as far as sb/sth. is concerned 就就sb/sth.而言而言v as follows 如下如下v as if /though 好象，仿佛好象，仿佛v as long as 达达之外，长达之外，长达v as long as 只要只要v as muc

31、h as 尽尽那样多；差不多那样多；差不多v as soon as 一一就就v as soon as possible 尽快尽快v as usual 像往常一样，照例像往常一样，照例v as well 也，同样，不妨也，同样，不妨(句尾）句尾）v as well as (除除之外之外)也，既也，既又又v as.as. 象，如同，与象，如同，与一样一样v as many asv as much as19vthink of as vtreatasvlook on/upon.asvconsiderasvwork asvact asvbe well-known as20vHebehaved as if

32、 nothing had happened. v他装着若无其事的样子。他装着若无其事的样子。vShe treats him as though he were her own son. 她待他好像待自己的儿子一样。她待他好像待自己的儿子一样。vas if可以接一个动词不定式短语可以接一个动词不定式短语vHe waved his hand to me as if to have something to tell me. v他向我挥手好像有什么要告诉我。他向我挥手好像有什么要告诉我。vDont worry, the matters as good as settled. v别担心，问题差不多已经

33、解决了。别担心，问题差不多已经解决了。vWhen the car was repaired, it looked as good as new. v这辆汽车修理好的时候，看起来差不多就像新的一样。这辆汽车修理好的时候，看起来差不多就像新的一样。21vJoan can speak Chinese as well as English. v琼能讲英语还能讲汉语。琼能讲英语还能讲汉语。vHe spent all his money, as well as wasting his time. v他不仅浪费了时间，还花光了他所有的钱。他不仅浪费了时间，还花光了他所有的钱。vIboughtalotoffr

34、uits,suchasapples,oranges,bananasandsoon. v我买了许多种水果，像苹果，桔子，香蕉等。我买了许多种水果，像苹果，桔子，香蕉等。vWe had such books as you never saw. v我们有一些你从未看过的书。我们有一些你从未看过的书。vWe had a delightful weekend in the country. As for the traffic, we had no difficulty. v在乡下我们度过了一个愉快的周末。至于交通，我们在乡下我们度过了一个愉快的周末。至于交通，我们没遇到任何困难。没遇到任何困难。vI

35、dont know anything as to the others. v至于其他，我一无所知。至于其他，我一无所知。22vStudents should take notes so as to make revision easier. v学生应当记笔记，以便容易复习。学生应当记笔记，以便容易复习。vAsamatteroffact,Imveryfondofhousework. v其实，我很喜欢做家务。其实，我很喜欢做家务。vAsaresult，hehadbeengivenan excellentjob. v结果，他得到了一份极好的工作。结果，他得到了一份极好的工作。vYou may bor

36、row this book as long as you promise to give it back. v只要你答应归还，你就可以把这书借走。只要你答应归还，你就可以把这书借走。23vTranslate the following sentences:v1. Tom runs fast, but I run just as fast.v2. She doesnt sing so well as her sister.v3. I have changed it as you suggested.v4. We all like her as she is very kind.v5. He ra

37、ised his voice so as to be heard.v6. Tired as they were, they walked on.v7. I never heard such stories as he told.v8. He is careful, as his work shows.v9. He works as a teacher.v10. As you sow, so will you reap.24vShe was well-known as an excellent dancer.vTom is as tall as Jim.vMy handwriting is no

38、t as /so good as yours.vTo make much progress like him we must study as hard.vAs he was tired, he went to bed early.vThe students did as their teacher told them.vShe stood at the door as if she were waiting for someone.vThe horse is getting old and can not run as fast as it did.vNothing is so diffic

39、ult as this.vPlease come here as soon as possible.vAs for me, I have nothing to complain of.vI remember the whole thing, as if it happened yesterday.25vThis pencil is half as long as that one.vHe is twice as old as I.vI read the letter as I walked along the river.vHe talked to me like my father.vMy

40、hometown is not the same as it was.vDo it as I do.vDo just as I told you to.vAs he was reading, he was listening.vI work as others do.vAs he wasnt reading in time, we went without him.vAs far as Im concerned, you can do whatever you like.vThe prairies stretch on all sides as far as the eye can see.v

41、The rise in interest rates will be disastrous as far as small firms are concerned.26vHe dressed as a policeman.vShe found a job as a packer.vIm speaking you as your employer.vTreat me as a friend.vThey accept him as an equal.vI respect him as a writer and as a man.vAs her private secretary he has ac

42、cess to all her correspondence.vAs a child she was sent to three different schools.vI havent known him as long as you.vHe looks as ill as he sounded on the phone.vHis eyes arent quite as blue as they look in the film.vHe recited as much of the poem as he could remember.vAs he grew older, he lost int

43、erest in everything except gardening.27vWhy didnt you catch that bus as I told you to?vShes unusually tall, as are both her parents.vHes a doctor, as was his wife before she had children.vAs for the hotel, it was very uncomfortable and miles from the sea.vAs for you, you ought to be ashamed of doing

44、 such things.vAs if unsure of where she was, she hesitated and looked around.vHe rubbed his eyes and yawned as though waking up after a long sleep.vAs to correcting our homework, the teacher always makes us do it ourselves.vTheres no special rules as regards what clothes you should wear.28vI watched

45、 her as she combed her hair.vAs you werent there, I left a message.vYoung as I am, I already know what career I want to follow.vTalented as he is, he is not yet ready to turn professional.vMuch as I like you, I couldnt live with you.vTry as he might, he couldnt open the door.vDo as I say and sit dow

46、n.vLeave the table as it is.29vStrange as it seems, it is so.vSurrounded as she was by crowds of fans, the movie star managed to get into the car.vStudent as she is , she has earned a lot of money.vChild as he is, he can answer such difficult questions. 30v尽管这辆车很便宜，我还是买不起。v即便他能来，他也无法帮你解决问题。v尽管他跑得很快，

47、他还是被别人拉到了后面。v尽管这种动物看起来很可爱，但还是很危险。v虽然被妈妈揍，他并不恨她。v尽管我很喜欢你，我还是不能嫁给你。31vHe was seen using a check as a bookmark.vClever as she is, she doesnt study well.vMuch as I hate him, Ill not kill him.vTry as she might, Mary cant find a job.vIt is important for you as well as for me.vYou may borrow this book as l

48、ong as you keep it clean.vJohn, as you know, is a writer.vHe is not such a fool as he looks.vAs I entered, he looked at me kindly without scolding.vAs Antonio did not have any money just then, he went to Shylock.vLets take the front seats so that we may see more clearly.vHe didnt plan his time well,

49、 so that he didnt finish the work in time.vAs long as we dont lose heart, well find a way to overcome the difficulty.32v1. She had a tense expression on her face, _she were expecting trouble.vA. even though B. even as C. as though D. now that v2. A good many proposals were raised by the delegates, _

50、was to be expected. vA. that B. what C. so D. as v3. _might be expected, the response to the question was very mixed.vA. As B. That C. It D. What v4. Americans eat _as they actually need every day.vA. twice as much protein B. twice protein as much C. twice protein as much D. protein as twice muchOKO