4、动名词作宾语补语

I found the parade quite interesting to watch.

这种用法通常用在下列几类动词中，后接宾语然后加上-ing分词，构成复合宾语结构，动名词充当宾补成分。

表示感觉和心理状态的动词，如：see, hear, feel, find, smell, watch, find, listen to, look at, notice, observe等。如：

There we found him watching TV.

我们发现他在那儿看电视。

I heard someone knocking at the door.

我听见有人在敲门。

在有些动词(如：regard, describe, accept, think of, quote等)之后，可由as引出-ing分词词组作宾补。如：

They regarded the contract as being invalid.

他们认为合同无效。

They described the child as being very clever.

他们描述这孩子非常聪明。

使役动词，如：set, keep, have, get, leave, catch等。如：

Can you get my watch going again?

你能使我的表再走起来吗?

This sets me thinking.

这使我思考。