2. 非谓语动词的基本用法

不定式：常表目的、结果、将来

He went to shanghai to visit his parents.(目的)

Man is to live a better life in the next century.(预期结果)

I have a lot of homework to do.(将来)

动名词：具有名词的特征(一般在名词前或句首)

Seeing is believing.

There is a swimming pool beside the restaurant.

现在分词：表示主动、进行和伴随状态等

Seeing from the hill, you will find the park more beautiful.(表主动、进行)

The house being built now is a cinema.(表被动、进行)

Having done his homework, he went out to play basketball.(表主动、完成，先于谓语动词发生)

 过去分词：表示被动和完成

Seen from the hill, the park looks very beautiful.(表被动、完成)

知识精练

I smell something ______ in the kitchen. Can I call you back in a minute?

A. burning B. burnt C. being burnt D. to be burnt

【答案】A。解析：考查非谓语动词。句意：我闻到厨房有什么东西烧焦了。我能不能一会儿再给你回电话?something与burn构成主动关系，且表示正在进行。根据句意说明是现在正在发生的事情，故使用现在分词作宾语补足语。故A正确。