非谓语动词种类及句法功能(5页).doc
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1、-非谓语动词种类及句法功能-第 5 页非谓语动词:动词不定式(一) 概述:在英语中,不作句子谓语,而具有除谓语外其他语法功能的动词,叫做非谓语动词。非谓语动词有动词不定式(the Infinitive);动名词(the Gerund);现在分词(the Present Participle);过去分词(the Past Participle)。(二) 非谓语动词的句法功能:动词不定式:(to)+do1 不定式的形式:(以动词write为例)否定式:not + (to) do(1)一般式:不定式的一般式所表示的动作与谓语动词动作同时发生或发生在谓语动词动作之后,例如: Im glad to me
2、et you. He wants to be an artist.The patient asked to be operated on at once. The teacher ordered the work to be done.(2)进行式:不定式的进行式所表示的动作与谓语动词动作同时发生,例如: The boy pretended to be working hard. He seems to be reading in his room(3)完成式:不定式的完成式表示的动作发生在谓语动词动作之前,例如: I regretted to have told a lie. I happe
3、ned to have seen the film.不定式的句法功能:(1)作主语: To lose your heart means failure. It means failure to lose your heart. (2)作表语: Her job is to clean the hall. He appears to have caught a cold. (3)作宾语:常与不定式做宾语连用的动词有:want, hope, wish, offer, fail, plan, learn, pretend, refuse, manage, help, agree, promise, p
4、refer 如果不定式(宾语)后面有宾语补足语,则用it作形式宾语,真正的宾语(不定式)后置,放在宾语补足语后面,例如:Marx found it important to study the situation in Russia.不定式一般不能作介词的宾语,只有在极少数介词如 :but, except等后才行,此时不定式可带to 或不带to. We have no choice but to wait outside. They could do nothing but ask for help.一些动词要用“疑问词+不定式”作宾语,常见的动词有decide, know, learn, w
5、onder, understand, find out, remember, see等如:My mother wondered where to go at that time .He gave us some advice on how to learn English.(4)作宾语补足语: 在复合宾语中,动词不定式可充当宾语补足语,如下动词常跟这种复合宾语:want, wish, ask, tell, order, beg, permit, help, advise, persuade, allow, prepare, cause, force, call on, wait for, in
6、vite. 此外,介词有时也与这种复合宾语连用,如: With a lot of work to do, he didnt go to the cinema不定式在七个感官动词see, hear, feel, watch, find, notice, listen to, 三个使役动词let, have, make等后作宾补时,to要省略。但改为被动语态时,不定式要加to, 如: I saw him cross the road. He was seen to cross the road.动词不定式省略to 的情况归纳:*1 当动词不定式作宾语补足语时,如动词是 make, let , ha
7、ve 或 look at , see, watch, observe, hear, listen to, feel 等,不定式不带to.*2. 在下列结构后 had better, would rather, would ratherthan, cannot but(不得不 ,必然,不能不), cant help but 等*3. Why. 或 why not 表建议*4. 在介词 but , except 之后,如果其前有实义动词do 的某种形式,不定式不带to,反之须带to .*5 不定式作表语时,如果解释do的具体内容时to可以省去。What he want to do is help
8、others.*6 动词help或help+宾语之后,可用带to的不定式,也可用不带to的不定式 (5)作定语: 动词不定式作定语,放在所修饰的名词或代词后。与所修饰名词有如下关系: 动宾关系: I have a meeting to attend.注意:不定式为不及物动词时,所修饰的名词如果是地点、工具等,应有必要的介词,如: He found a good house to live in. The child has nothing to worry about.如果不定式修饰time, place, way,可以省略介词:如: He has no place to live. 如果不定
9、式所修饰名词是不定式动作承受者,不定式可用主动式也可用被动式:Have you got anything to send?(你送) Have you got anything to be sent?(我送) 说明所修饰名词的内容: We have made a plan to finish the work.被修饰名词是不定式逻辑主语: He is the first to get here.v 不定式在以下形容词后:easy, difficult, hard, heavy, light, cheap, expensive, good, nice, safe, dangerous, impor
10、tant, interesting, pleasant, (im)possible, fun等。v This question is difficult _ (answer).v Do you think him easy_ (work) with?v 这时用主动形式表被动意思。(6)作状语:表目的: He worked day and night to get the money.注意不定式放句首时,逻辑主语与句子主语要一致:wrong:To save money, every means has been tried. right:To save money, he has tried e
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