非谓语

发布时间 : 星期二 文章非谓语更新完毕开始阅读

do动词。

If you don't want to do it,you don't need to. 如果你不想做这件事,你就不必做。

9.不定式的并列:第二个不定式可省略to。

He wished to study medicine and become a doctor. 他希望学医并成为医生。

非谓语动词不定式

1. “to” 是不定式符号还是介词,下列短语中的to 都是介词。

agree to object to close to,come to,lead to,refer to,

equal

to,familiar

to,point

to,thank to,devote to,next to,belong to,be used to,look forward to

2.带to 还是不带to I have no choice but to give in I cannot do anything but give in I saw him enter the classroom . (但是:He was seen to enter the classroom .)

3.动词不定式逻辑主语是由for 作为标记的。但是有时用of .

区别:当使用for时,句中形容词修饰的是不定式;而用of时,句中形容词修饰逻辑主语。

It’s necessary for you to study hard .(necessary 修饰 to study hard,

表示学习努力是有必要的)

It’s foolish of him to do it .(foolish 修饰逻辑主语him)

与of 连用的形容词有: good,kind,nice,wise,clever,foolish,right,wrong,careful,careless,polite,…

与for连用的通常是一些表示可能性、难易程度、必要性等含义的形容词:

possible,impossible,easy,hard,difficult,necessary,…

4.后接不定式作宾语的动词有: want,hope,wish,like,begin,try,need,forget,agree,know,promise,teach,refuse,help,arrange,dare,decide,deter

mine,fail,manage,offer,prepare,continue,ask,mean,choose,expect etc.

需要宾语补足语的动词不能用动词不定式直接做介词的宾语,而要用it做形式宾语。例如:通常不说We think to obey the laws is important . 而说We think it important to obey the laws .

5.不定式作宾语补足语时省略to的情况:若不定式前的谓语动词是使役动词make,let,have(表示“让、使”)、感官动词see,watch,look at,observe, notice,hear,listen to, feel时,不定式符号to可以省略。这些动词亦可总结为口诀:“三使五看两听

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