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1、 非谓语动词在句中充当除谓语以外的句子成分的动词形式叫做非谓语动词。非谓语动词分为三种形式:不定式、动名词和分词(分词包括现在分词和过去分词)不定式、动名词和现在分词都有时态和语态的变化.不定式主动语态被动语态与谓语动词的关系一般式To doTo be done动作发生在谓语动作之后进行式To be doing与谓语动作同时发生完成式To have doneTo have been done动作发生在谓语动作之前动名词主动语态被动语态与谓语动词的关系一般式DoingBeing done与谓语动作同时发生完成式Having doingHaving been done动作发生在谓语动作之前现在分词

2、主动语态被动语态与谓语动词的关系一般式DoingBeing done与谓语动作同时发生完成式Having doneHaving been done动作发生在谓语动作之前不定式一、 不定式的作用1、 作主语 不定式作主语时,谓语用单数。往往用it 作形式主语,把不定式放在谓语后面。如:It took us two hours to finish the job.It is impossible for us to get there on time.It is very kind of you to help us.注意:(1)其他系动词如look, appear等也可用于此句型。(2)当不定式

3、作主语的句子中又有一个不定式作表语时,不能用It is to的句型。试比较: It is to negate my own idea to believe him.(错) To believe him is to negate my own idea .(对) (3)It is+ adj. of / for sb. to do sth. 结构中,当不定式的逻辑主语和前面的形容词可以构成系表结构时,用of, 否则用 for.2、 作宾语(1) 动词+不定式。如:He managed to escape from the fire.I find it hard to get along with

4、him.(it 作形式宾语)注:下列动词通常用不定式作宾语:want, try, hope, wish, need, forget, know, promise, refuse, help, decide, begin, start, learn, agree, choose, get等(2) 动词+疑问词+to , “特殊疑问句+不定式”相当于名词,作宾语。如:I dont know what to do next/ how to do it next.I cant decide when to go there.注意:不定式短语作宾语时,如果还带有宾语补足语,往往把不定式短语放在宾语补足语

5、之后,用it 作形式宾语。如:I find it necessary to learn a foreign language.3、 作宾语补足语(1) 动词+宾语+不定式(to do )。如:He warned me to be careful.I want you to speak to Tom.What makes you think so?(不带to的不定式) 注:可以用动词不定式做宾补的动词有:ask, tell, order ,want ,get, would like, like, advise, invite, allow, help, wish, warn, expect, p

6、refer, encourage(2) 表见解、看法的动词结构可为:动词+宾语+ to be 的不定式结构。如:We consider Tom to be one of the best students in our class.The book is believed to be useful.(被动语态) (3) There +不定式。如:We didnt expect there to be so many people there.我们没料到会有那么多人在那里。注意:(1)有些动词需用 as 短语作补语,像regard, think, believe, take, consider。

7、如:We regard Tom as our best teacher. 我们认为汤姆是我们最好的老师。Mary took him as her father. 玛丽把他当作自己的父亲。(2)在动词feel (一感),hear, listen to(二听),have, let, make(三让),notice, see, watch, observe, look at(五看)(即:吾看三室两厅一感觉)等后面的补足语中,不定式不带to,但变为被动语态后,必须带to。如:They saw the boy fall off the tree. The boy was seen to fall off

8、 the tree. (3)help后面作宾语补足语的不定式可以带to,也可以不带to. I often help him (to)clean the room. I helped him (to) find his things.4、 作定语不定式作定语,修饰名词或代词,不定式和它所修饰的名词之间有逻辑上的主谓关系、动状关系、同位关系或动宾关系。不定式通常要放在这些被修饰的词后。如:I have a lot of work to do.(动宾关系)He is looking for a room to live in.(动状关系)He is the first person to think

9、 of the idea.(主谓关系)He has got a chance to go abroad.(同位关系)注意:1.不定式的逻辑主语是句子的主语时,不定式用主动形式表被动。如: Do you have anything else to say? 2.如果作定语的不定式是一个短语,则要保留不定时短语中的副词或介词。如: I need a pen to write with . (I will wirte with the pen ) (我需要一直钢笔写字) I have a little baby to look after .(I must look after the little

10、 baby ) (我有一个婴儿要照看)作状语,表示目的、结果、原因等,有时还有一些固定搭配的不定式短语,如in order to , so as to, soas to, such as to, .enough to, tooto等。(1) 做目的状语,to, only to (仅仅为了), in order to, so as to, so(such).as to(如此···以便···)如:He ran so fast as to catch the first bus. 他飞快地跑以便赶上第一班车。He came to the s

11、chool to see his son.(2) 作结果状语,表事先没有预料到的,要放在句子后面。如:He hurried to the post office only to find it was closed.He searched the room only to find nothing.(3) 做原因状语。如:We were very excited to hear the news.Im glad to see you.(4) 做条件状语。如:To turn to the left , you could find a post office.5、 作表语不定式可放在be动词后面

12、,构成表语。如:The question is how to put it into practice.My question is when to leave.His dream is to be a doctor.Her work is to look after the babies.注意:1.不定式在句中作表语时,对应的谓语动词用单数。 2.当助于是不定式时,表语不能用Ving形式,可用不定式。 如:To see is to believe. (眼见为实)6、 独立结构。如:To tell you the truth, I dont agree with you.To make mat

13、ters worse, it began to rain.一、 不定式的时态和语态1、 不定式的时态(1) 现在时:有时与谓语动词表示的动作同时发生,有时发生在谓语动词的动作之后。如:He seems to know this. I hope to see you again. (2) 完成时:表示的动作发生在谓语动词表示的动作之前。如:Im sorry to have given you so much trouble.He seems to have caught a cold.(3) 进行时:表示动作正在进行,与谓语动词表示的动作同时发生。如:He seems to be eating

14、something.(4) 完成进行时:表示动作从过去某个时间开始,一直延续到现在,并有可能持续下去。如:She is known to have been working on the problem for many years.2、 不定式的语态当不定式的逻辑主语是其动作的承受者时,就用被动式。如:He was seen to enter the hall. He asked to be sent to work in Tibet.二、 省to 的动词不定式1、 情态动词(除ought 外,ought to)2、 Would rather, had better.3、 感官动词 see,

15、 watch, look at, notice, observe, hear, listen to, smell, feel 等后作宾补,省略 to.注意:在被动语态中 to 不能省略掉。如:I saw him dance. He was seen to dance. The boss made them work the whole night.They were made to work the whole night.4、 使役动词 let, have, make.5、 由 and, or 和 than 连接的两个不定式,第二个 to 可以省去。如:He wants to move to

16、 France and marry the girl.6、 Help 可带 to ,也可不带to, help sb. (to) do sth.7、 Why dont you/Why not8、 But 和 except 前是动词 do 时,后面出现的动词用不带 to 的动词不定式。试比较: He wants to do nothing but go out. He wants to believe anything but to take the medicine.9、 通常在discover, imagine, suppose, think, understand 等词后,可以省去 to b

17、e .如:He is supposed (to be) nice. 他应该是个好人。I usually go there by train.Why not _ by boat for a change?A to try going B trying to go C to try and go D try goingPaul doesnt have to be made _ . He always works hard.A learn B to learn C learned D learning四、 动词不定式的否定式。如:Tell him not to shut the window. Sh

18、e pretended not to see me when I passed by. Mrs. Smith warned her daughter _ after drinking. A never to drive B to never drive C never driving D never drive The boy wanted to ride his bicycle in the street, but his mother told him _. A not to B not to do C not do it D do not do The patient was warne

19、d _ food before the operation. A to eat no B eating not C not to eat D not eating动名词(动名词具有动词和名词的特征,在句中作主语、表语、宾语和定语)一、 动名词的作用1、 作主语谓语用单数。It代替动名词作主语,常用于如下结构:Its no good/use doing···如:Seeing is believing.Playing with fire is dangerous.Its no good waiting here.2、 作宾语I enjoy listening to m

20、usic.He often practices playing the piano in the evening.He is fond of playing basketball.He has given up smoking.Would you mind turning down your radio a little, please?(1) 只能接动名词作宾语的动词:口诀:考虑建议盼原谅承认推迟没得想避免错过继续练否认完成就欣赏禁止想象才冒险不禁介意准逃亡难以忍受始反对想要成功坚持忙习惯放弃有困难导致专心防道歉第一句包含的动词有:consider, suggest/advise, look

21、 forward to, excuse/pardon, 第二节包含的动词有:admit, delay/put off, fancy(想像,想要), 第三句包含的动词有:avoid, miss, keep/keep on, practice, 第四句句包含的动词有:deny(否认,拒绝), finish, enjoy/appreciate, 第五句包含的动词有:forbid, imagine, risk第六句包含的动词有:can't help, mind, allow/permit, escape.第七句包含的动词有:can't stand(难以忍受),set about 开始,

22、着手,object to(反对), 第八句包含动词有:feel like(想要),succeed in (成功),stick to(坚持) ,insist on(坚持,强调,坚决要求) ,be busy (in)(忙于做某事)第九句包含的动词有:be used/accustomed to(习惯于), give up(放弃), have difficulty/trouble (in), (做某事有困难)第十句包含的动词有:lead to(导致), devote to(将奉献给;把专用于) , prevent from( 预防,防止),apologize for(为道歉), , 此外,have a

23、 good/wonderful/hard time (in), spend time (in),thank you for, pay attention to, aim at 目的在于,旨在;瞄准;企图 ,accuseof 控告;谴责 , get down to(开始认真处理,对待)(2) 只能接不定式作宾语的动词:口诀:同意提出做计划, 要求答应来帮忙。 准备决定遭拒绝, 敢于选择有希望。 不能做到莫假装, 设法做成决心坚。 agree (同意); offer (提出); intend, plan (打算,计划); demand, ask (要求); promise (答应); help (

24、帮忙); prepare (准备); decide (决定); refuse (拒绝);dare (敢于); choose (选择); wish,hope,want, expect (希望,想要); fail ;(不能;忘记); pretend (假装); manage (设法); determine (决心)。(3) 接动名词、不定式均可,意义相同的动词:like,love,dislike,hate,begin,star,continue,prefer,cant bear/endure 无法忍受,cease停止(4) 下列词接动名词和不定式均可,但意义不同的动词:forget,go on,m

25、ean,regret,remember,stop,try等Stop to do 停下来去做 stop doing 停止做Forget to do 忘记要做 forget doing 忘记做过Remember to do 记得要做 remember doing 记得做过Regret to do 遗憾要做 regret doing 后悔做过Try to do 企图做,尽力做 try doing 试着做Go on to do 继续做(另一件事) go on doing 继续做(同一件事)Mean to do 打算做 mean doing 意味做In some parts of London, mis

26、sing a bus means _ for another hour.A waiting B to waiting C wait D to be waiting答案:A(5) Need, require, want作“需要”讲,其后用动名词的主动式表示被动意义,be worth也有类似用法。如:The flowers need watering/to be watered.The problem is worth discussing.3、 作表语此时的动名词可以和主语调换位置。如:My hobby is collecting stamps.Her job is washing, clean

27、ing and taking care of the child.4、 作定语动名词作定语,一般表示用途。如:a waiting room,a diving board,a reading room,a dining hallthere are a lot of swimming pools in the city.注:(1)现在分词作定语表动作,它与所修饰的名词之间存在逻辑上的主谓关系,可改写成一个定语从句。如果为单词,放在被修饰n之前,为短语,放在被修饰n之后。如:a sleeping boy =a boy who is sleeping a developing country =a c

28、ountry which is developing (2)动名词作定语通常表示它所修饰的名词的用途或性质,可改写成一个for的短语,两者不存在逻辑上的主谓关系。如:a washing machine = a machine for washing a swimming pool = a pool for swimming 二、 动名词的时态和语态动名词的动作发生在谓语动词所表示的动作之前,通常要用完成式,否则都用一般式。如:We are interested in playing chess.He was praised for having finished the work ahead

29、of time.Im sorry for not having kept my promise.若主语是动名词所表示的动作的对象,动名词用被动语态。如:We must do something to prevent water from being polluted.I remember having been told a story.He was afraid of being scolded by the teacher.及物动词不及物动词主动被动主动一般时doingbeing donedoing完成时having donehaving been donehaving done分词(分词

30、分为现在分词和过去分词。在句中作定语、状语、表语和宾语补足语。)现在分词和过去分词的区别:在语态上,现在分词表示主动意义,过去分词表示被动意义;在时间上,现在分词表示的动作往往正在进行或者与谓语动词同时发生,过去分词表示的动作已经完成或没有一定的时间性。如:falling leaves 正在下落的树叶 fallen leaves 已经落在地上的树叶一、 分词的作用1、 作定语(1) 单个分词作定语,分词前置。如:The sleeping boy is my son.The excited people rushed into the building.A lost opportunity ne

31、ver returns.He is a retired worker.(2) 分词短语作定语,分词后置;分词修饰不定代词something等要后置;个别分词如give,left等作定语也后置。如:The girl standing under the tree is my niece.The building built last year is our library.This is the question given.There is nothing interesting.(3) 过去分词作定语与其修饰的词是被动关系,相当于一个被动语态的定语从句。如:Most of the peopl

32、e invited to the party were famous scientistsThe first textbook _ for teaching English as a foreign language came out in the 16th century.A have written B to be written C being written D written答案:DWhats the language _ in Germany?A speaking B spoken C be spoken D to speak答案:BPrices of daily goods _

33、through a computer can be lower than store prices.A are bought B bought C been bought D buying.答案:BWhen I got back home I saw a message pinned to the door _ “Sorry to miss you; will call later.”A read B reads C to read D reading答案:D解析:reading 与 pinned to the door 一样作message 的后置定语,相当于which read, pinn

34、ed 和 reading的逻辑主语都是 message,它与pin是被动关系,用ed 形式,与 read 是主动关系,用ing 形式2、 作状语现在分词和过去分词在句中可以作时间、原因、方式、伴随、条件、结果等状语。Not receiving any letter from him, I gave him a call.As I didnt receive any letter from him, I gave him a call.Given more attention, the trees could have grown better.If more attention was giv

35、en, the trees could have grown better.(条件)Walking along the street, I ran across my old friend.Bitten by a snake, he was taken to hospital(原因).Though defeated, he didnt lose heart.(让步)He lay on the grass, looking into the sky.(伴随)He came running to tell me the good news.(方式)_ some officials, Napoleo

36、n inspected his army.A Followed B Followed by C Being followed D Having been followed答案:B There was a terrible noise_ the sudden burst of light. A followed B following C to be followed D being followed 答案:B _ , liquids can be changed into gases. A Heating B To be heated C Heated D Heat 答案:C 注意:(1) 选

37、择现在分词还是过去分词,关键看主句的主语。如分词的动作是由主句的主语发出,分词就用现在分词,反之就用过去分词。试比较:(Being)Used for a long time, the book looks old.由于用了很长时间,这本书看上去很旧。Using the book, I find it useful.在使用的过程中,我发现这本书很有用。(2) 分词作状语时,其逻辑主语必须和主句的主语一致,如果不一致,就用独立主格结构,即在分词前加上它的逻辑主语。现在分词的完成式主要用于作状语,一般不用作定语。When_, the museum will be open to the public

38、 next year.A completed B completing C being completed D to be completed答案:A_ such heavy pollution already, it may now be too late to clean up the river.A Having suffered B Suffering C To suffer D Suffered答案:A3、 作表语现在分词作表语多表示主语具有的特征,过去分词作表语多指主语所处的状态。如:The film is touching.The glass is broken.She look

39、ed tired with cooking.He remained standing beside the table.Im very_ with my own cooking. It looks nice and smells delicious.Mm, it does have a _ smell.A pleasant; pleased B pleased; pleased C pleasant; pleasant D pleased; pleasant答案:D4、 作宾语补足语分词和不定式一样,在一些感官动词或使役动词后作宾语补足语。如:I smell something burning.I heard him singing the song.I heard my name called.I cant make myself understood in English.I found my car missing

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