动词不定式可以作以上各种成分

1、v1.0 可编辑可修改主动形式 被动形式一般式 （ not ） to make（ not ） to be madenot ） to have made （ not ） to have been made完成式 进行式 （ not ） to be making 完成进行式 （ not ） to have been making 一作定语 置于被修饰的名词或代词之后。表示将来的动作只有动宾关系，则需用被动语态与被修饰词之间有 动宾关系 ，同时与句中其它词之间 The next train to arrive is from Washington. Have you anything to be t

2、aken to your sister Do you have anything to say on the question又有逻辑上的 主谓关系 时，尽管有被动含义，却仍用主动语态 Would you please give me some paper to write on 与被修饰词之间有动宾关系，如是不及物动词，则需加介词 不定式作定语时 =定语从句，例 to arrive=that will arrive二、作表语不定式作表语表示 具体动作或将来动作 ；动名词作表语表示 抽象的一般行为 。 To be kind to the enemy is to be cruel to the

3、people. 当主语和表语都是不定式时，其含义一是条件，一是结果（例） My chief purpose is to point out the difficulties ofthe matter. What I would suggest is to put off the meeting.当主语是 aim,duty,hope,idea,mistake,plan,purpose,suggestion 等为中心词（例）时，或以 what 引 导的名词性分句（例）， 不定式说明主语的内容 。 Our work is serving the people. What he likes is ta

4、king a walk after supper. 句动名词作表语，与主语部分可以转换，如Serving thepeople is out work, The story told by is interesting. 而句中是现在分词作表语，说明主语的性质、状态，三、作宾补1）动词 +宾语 +不定式 （to do）Advise allow appoint believe cause challenge command compel consider declare drive enable encourage find forbid force guess hire imagine impe

5、l induce inform instructv1.0 可编辑可修改invite judge know like order permit persuade remind report request require selectsend state suppose tell think train trust understand urge warnFather will not allow us to play on the street.父亲不让我们在街上玩耍I found him lying on the ground.用分词做宾补 （现在分词表达主动，也表达正在进行，过去分词表达被

6、动）=I found it important to learn. 先加形式宾语，再加形容词，最后加带to do=I found that to learn English is important.带一个从句此类动词还有 get ，have。 。2）to + be 的不定式结构，作宾补的动词。Acknowledge, believe, consider, think, declare（声称）, discover, fancy（设想）, feelfind, guess, judge, imagine, know, prove, see（理解）, show, suppose, take（ 以为）

7、,understandWe consider Tom to be one of the best students in our class. 我们认为汤姆是班上最好的学生之一。3）to be + 形容词Seem, appear, be said, be supposed, be believed, be thought, be known, be reported, hope, wish, desire, want, plan, expect, meanThe book is believed to be uninteresting. 人们认为这本书没什么意思。4）there be+ 不定式

8、believe, expect, intend, like, love, mean, prefer, want, wish, undrstandWe didnt expect there to be so many people there.我们没料到会有那么多人在哪里。5）as 短语做补语，如 regard, think believe, take, consider.Mary took him as her father .玛丽把他当作自己的父亲。四：作状语1）目的状语To only to （ 仅仅为了 ）, in order to, so as to, so（such） as to （

9、如此以便 ）He ran so fast as to catch the first bus.他飞快地跑以便赶上第一班车。2）作结果状语，表事先没有预料到的，要放在句子后面。What have I said to make you angry.v1.0 可编辑可修改3）表原因Im glad to see you.The chair looks rather hard, but in fact it is very comfortable to siton当动词与介词连用时，常位于 形容词 +动词不定式 结构的末尾。五、作主语 动词不定式作主语时，句子的谓语动词常用单数，其位置有以下两种：（1）

10、 把不定式置于句首。如：To get there by bike will take us half an hour.（2） 用 it 作形式主语，把真正的主语不定式置后3）当不定式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 （错）It is to believe to see. （ 对）To see is to believe.百闻不如一见。六、作宾语1）动词+不定式 Want to do be warned not to do被动2）动词 +不定式 =动词+宾语+不定式ask, beg, choose, expect , hate, help intend li

11、ke, love, need prefer, prepare, promise, want, wishI want to speak to Tom. 我想和汤姆谈话。I want you to speak to Tom. 我想让你和汤姆谈话。3）动词 +疑问词 + to （疑问词带不定式在句中作成分时，谓语动词用单数） decide, know, consider forget, learn, remember, show, understand, see, wonder, hear, find out, explain, tellPlease show us how to do that.请

12、演示给我们如何去做。The question is how to put it into practice. 问题是怎样把它付诸实施。4）有些动词只能跟不定式作宾语 =接 that 引导的从句。I decided to ask for my money back.I decided that I would ask for my money back.5）当复合宾语中的宾语是不定式时，先用形式宾语 it 代替不定式，把不定式置于补语之后，即：主语动 词it 补语 to do 句式。He feels it his duty to help the poor.（1） 语态v1.0 可编辑可修改在

13、There be 结构中，修饰主语的不定式可用被动，也可用主动。如： There are still many thingsto take care of ( to be taken care of).但有时两种形式表达的意思不同，如： These is nothing to do now.( We have nothing to do now.) There is nothing to be done now.(We can do nothing now.)(2) 时态1) 现在时：一般现在时表示的动词， 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。He seems

14、 to know this.I hope to see you again. = I hope that Ill see you again.我希望再见到你。2) 完成时：表示的动作发生在谓语动词表示的 动作之前。 .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。He seems to be eating something.4) 完成进行时：She is known to have been wreaking on the problem for many years.疑问词不定式结构疑问词 who,what,w

15、hich,when,where,whether,how 后可接不定式构成不定式短语，在句中作主语、宾语、 表语等。如：When to leave for London(When we shall leave )has not been decided yet. Mr. Smith didnt know whether to leave or stay there. I asked Professor Xuhow to learn English well.(how I could learn ) The question was where to get the medicine needed

16、. 以上例句中疑问词不定式部分，均可转换为相应的从句形式。如： When we shall leave 、 how I could learn 经常在这种结构中使用的动词有： consider,decide,discover,explain,find out,forget,hear,know,learn,observe,understand,wonder 等。+do1) 情态动词 ( 除 ought 外， ought to) ：2) 使役动词 let, have, make ：3) 感官动词(在被动语态中则 to 不能省掉)I saw him dance. =He was seen to dance.4) would rather ，had better ：5) Why / why not ：6) help 可带 to ，也可不带 to, help sb (to) do sth：v1.0 可编辑可修改7) but 和 except ：but 前是 to do 时，后面出现的动词用 doHe wants to do nothing but go out.比较： He wants