高考必备语法 非谓语动词(共44张PPT)

非谓语动词讲解 概述： 1.谓语动词：在句子中担任谓语的动词 2.非谓语动词：是动词的特殊形式，在句中可以作除谓语外的所有成分 非谓语动词使用条件 一个句子当中，已经存在一个主句（谓语动词）,又没有连词的情况下, 还有别的动词出现时。 She got off the bus, leaving her handbag on her seat. She got off the bus, but left her handbag on her seat. 动词不定式 一．动词不定式的时态和被动形式 动词不定式是非谓语动词的一种，由不定式符号(to)加动词原形构成。不定式的形式有五种： 一般式:to do eg：I like to read English. 进行式to be doing eg：He seemed to be reading something at that time. 完成式to have done Eg：He seemed to have cleaned the room. 被动式to be done eg：The work is to be done soon. 完成被动式to have been done eg：The boy is said to have been sent to hospital yesterday. 二. 动词不定式的用法 1作主语 (1)不定式做主语时，可以直接放在谓语动词之前。 To see is to believe． Not to get there in time is your fault. (2)注：常用it做形式主语，将to do放在位于之后，使句子保持平衡。 句型1：It + 谓语 + to do It takes us an hour to get there by bus. 句型2：It’s + n. + to do It’s our duty to help the poor. It is a great enjoyment to spend our holiday in the mountains. 句型3： It is + adj + for sb to do sth（是形容事物的性质的 ） It is + adj +