不定式知识库

completed in two years and a half. 人们原本期待这项工程在两年半内 80.如mean

（1）We meant to have stayed there a week.

=We had meant to stay here a week. 我们原打算在那儿呆一个星期的。

81.如want

I wanted to have dropped her a line, but forgot to do so.

=I had wanted to drop her a line,but forgot to do so.

我原想写一封信给她，但忘记了。

注意：

think的过去完成时（had thought）用来表示“原以为”、“本来以为”之

意，实际上没有实现。但不用thought to have done并且后面跟从句 82. 如：

（1）I had thought the party would

be a great success.

我原以为这次晚会会获得成功。 （2）The doctor had thought the boy would be saved.

那位医生原以为那孩子会获救。

④．动词不定式作介词but的宾语 不定式可以作介词but（除了）的宾语，如果介词之前有动词do的某种形式，或在, can’t help but, can’t

choose but can’tbut (只好) 后面的不定式也要省略。 83.如：

(1)There is nothing we can do

but____patiently. 我们只能耐

心等待。

A. to wait B. wait C. waiting D. waited

(2)We could do nothing but____.

我们没有办法只好等。

A. wait B. to wait C. waiting D. to be waited

84.(1)You can't help but ____

moving when you hear this song.

当你听到这首歌的时候，你不由自主的开始移到。

A.to start B.start C.starting

85.(1)He can’t choose but_____.

A. stay on B.to stay on

86(1)I can’t but____ his terms(条件).

A. agree to B.to agree to 否则就要带to。如：

87(1)The teacher made no comments

but____ him to work hard. 老师除了叫他努力学习外，未做

任何评价。

A. to tell B. telling

(2)He had no choice but____ there