动名词作主语和宾语ppt课件.pptx
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1、动名词作主语和宾语,一、概念,doing,done,to do,动名词,现在分词,2.动名词:它是一种兼有动词和名词特征的非谓语动词形式。基本形式为:v-ing,动名词具有名词的性质,因此在句中主要作主语、宾语,在某些条件下亦可作表语、定语等。动名词有时态和语态的变化。,二、用法1.动名词作主语。注意谓语动词要用单数。Reading is an art.阅读是一门艺术。Playing with fire is dangerous.Climbing mountains is really fun.Getting up early is a good habit.,动名词作主语的其他类型:,1)用
2、it作形式主语,而把真正的主语(动名词或短语)置于句尾。注意这种用法仅限于某些名词和形容词的固定搭配中,如:Its no use(useless)/good doing 干是没用/没好处的It is no use crying over the spilt milk.洒掉的牛奶哭也没用。Its no use/good arguing with her.和她争吵是没有用的。Its(no)fun doing 干 是有(无)趣的It is fun playing with children.和孩子们一起玩真好。,It is a shame doing 干 是可耻的。,Its a shame copy
3、ing others homework.Its a waste of time doing 干.是浪费时间的Its a waste of time waiting here.在这里等着是浪费时间。2)用于there be 结构中There is no point(in)doing做是没有意义的Theres no point(in)getting angry.发火没有意义。,3)动名词的复合结构作主语,Toms coming surprised us.His being careless led to the accident.4)用于布告形式的省略结构中。,No smoking(=No smo
4、king is allowed(here).,No parking.,注意问题:,1)动名词作主语,谓语动词用单数。,Reading books widens our knowledge.读书增长我们的知识。2)动名词的被动式(being done),也可当主语。Being laughed at is a painful thing.被人取笑是件令人痛苦的事。Being exposed to sunlight for too long time will do harm to ones skin.长期暴露在阳光下对皮肤有害。3)动名词的否定式,是在doing前加上not.Not working
5、 hard will result in failure.His not coming back made us worried.,4)动词不定式和动名词都可以做主语。在意义上相近。但动名词多用来表示泛指或抽象或习惯性动作;不定式多用来表示特指或某次具体的动作。,_(Walking/To walk)is a good form of exercise for both young and old._(Walking/To walk)in the garden is what I want to do this afternoon.2.动名词作宾语动名词既可作动词宾语,又可作介词宾语。如:I e
6、njoy learning English.How about meeting outside the theatre?,具体用法如下:,1)某些动词(短语)只能用动名词作宾语,不能用不定式。常见的类似动词(短语)有:finish(完成),enjoy(享受),practise(练习),keep(保持),mind(介意),miss(错过),imagine(想象),advise/suggest(建议),admit(承认),avoid(避免),risk(冒险),escape(逃避),allow/permit(允许),dislikeappreciate(感激),understand(理解),delay
7、/postpone(延期),mention(提及),deny(否认),quit(停止),excuse/pardon(原谅)resist(抵抗),forbid(禁止)feel like(想要),2)某些短语(特别是某些含有介词的短语)后,需要用动名词作宾语。类似的常用短语有:,常用的带介词 to 短语有:lead to/look forward to/devote to/pay attention to/be(get)used to/get down to(开始认真干)/object to/be opposed to(反对)/be addicted to(沉溺于)其他:cant help(情不自
8、禁)/insist on/feel like/put off(推迟)/cant bear/stand(不能忍受)feel like/succeed in/depend on/be fond of/be worth/in addition to/have difficulty in doing,3)某些词后既可加不定式又可加动名词,但意义截然不同,需要引起极大注意!如:,go on to do(做完一件事后)接着做另一件事 go on doing 继续做(原来做的事)After a break,the teacher went on _(to give/giving)his lessonAfte
9、r finishing his home work,he went on_(sweeping/to sweep)the floor.remember to do 记着要做(动作未发生)remember doing 记得做过(动作已发生),I remembered to post the letter.我要记住把信寄出去。(未寄)I remembered posting/having post the letter.我记得把信寄出去。(已寄),forget to do 忘了去做(没做)forget doing/having done 忘记以前曾做过(做过忘了)I forgot to post t
10、he letter.我忘了去寄信。(没寄)I forgot posting/having post the letter.我忘了曾寄过信了。(寄了,但忘了),regret to do(say/tell/inform/announce)遗憾地(对将要做的事抱歉)regret doing/having done 后悔做了(对已经发生的事感到后悔),I regret _(say)I cant come.I regret _(spend)so much money the on car.mean to do 打算做(主语一般是人)mean doing 意味着(主语一般是物)You really mea
11、n _(go)Being late means _(wait)for another hour.,try to do 设法/尽力/努力去做 try doing 尝试着去做(看有何结果),Since the front door wont open,why not try _(open)the back door?Try _(write)better in your exam.stop to do 停下来做(另一件事)stop doing 停止做(原来做的事)He stopped _(say)to his teacher on the way.When the bell rang,we stop
12、ped _(talk)cant help(to)do 不能帮助做 cant help doing 禁(忍)不住做,I cant help _(cook).Im too busy.On hearing joke,they couldnt help _(laugh),be used to do 被用来做 be used to doing 习惯于/适应于 Wood is used to _(make)paper.He has been used to_(get)up early.4)动名词表示被动意义:动词 need,require,want 表示“需要”时,其后跟动名词的主动形式或不定式的被动式作
13、宾语。即:doing need/want/require+to be done,The door needs/wants/requires _(repair)_,类似的还有:deserve(值得;应当)He deserves _(praise)3.动名词的复合结构 1)含义:动名词前面有自己独立的逻辑主语,这便构成了动名词的复合结构。2)构成:物主代词/名词所有格+动名词 3)性质与作用:动名词的复合结构在意义上相当于一个句子,但实际上是一个名词结构,故在句中作主语、宾语或表语。,1)作主语Marys coming late made her teacher angry.玛丽来晚了,这使得她的
14、老师很生气。,His coming here surprised us.他的到来使我们很惊讶。His being late made me angry.2)作动词或介词的宾语Do you mind my/me smoking?I insist on Marys/Mary going there.我坚持要玛丽到那儿去。I heard of your/you being ill.我没听说你病了。,3)作表语Whats most important is Toms going there at once.最为重要的是汤姆要立即去那里。The problem is their not having e
15、nough money.,问题是他们没有足够的钱。注意:若动名词的复合结构作宾语,其中的物主代词可由人称代词的宾格形式代替;名词所有格可由名词普通格代替。但作主语时不可这样代替。Do you mind my/me smoking?I insist on Marys/Mary going there.Marys(不可用Mary)being ill made her mother worried.,4.动名词的时态和语态,1)构成:动名词没有人称和数的变化,但有时态和语态的变化。动名词的时态分一般式和完成式两种,语态分主动形式和被动形式。具体如下:一般式的主动语态:doing 一般式的被动语态:b
16、eing done完成式的主动语态:having done完成式的被动语态:having been done图解如下:,动名词的时态和语态,doing,being done,having done,having been done,3)用法:,(1)一般式 doing/being done 的用法当动名词所表示的动作与谓语动词同时发生或发生在谓语动词之后或不强调(没有)明确的先后关系时,用一般式。He kept smiling.(与谓语动作同时发生)I am thinking of going there.(发生在谓语之后)Finding work is difficult.(没有明确先后关系
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