动词不定式作宾语补足语

  • 动词+宾语+不定式(to do )。如:

He warned me to be careful.

I want you to speak to Tom.

What makes you think so?(不带to的不定式)

注:可以用动词不定式做宾补的动词有:ask, tell, order ,want ,get, would like, like, advise, invite, allow, help, wish,warn, expect, prefer, encourage

  • 表见解、看法的动词结构可为:动词+宾语+ to be 的不定式结构。如:

We consider Tom to be one of the best students in our class.

The book is believed to be useful.(被动语态)

(3)   There +不定式。如:

We didn’t expect there to be so many people there.我们没料到会有那么多人在那里。

注意:(1)有些动词需用 as 短语作补语,像regard, think, believe, take, consider。如:

We regard Tom as our best teacher. 我们认为汤姆是我们最好的老师。

Mary took him as her father. 玛丽把他当作自己的父亲。

(2)在动词feel (一感),hear, listen to(二听),have, let, make(三让),notice, see, watch, observe, look at(五看)(即:吾看三室两厅一感觉)等后面的补足语中,不定式不带to,但变为被动语态后,必须带to。如:

They saw the boy fall off the tree.      The boy was seen to fall off the tree.

(3)help后面作宾语补足语的不定式可以带to,也可以不带to.

I often help him (to)clean the room.

I helped him (to) find his things.

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