1、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.二. 动词不定式的用法 I.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
2、，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. I want to know this matter.(1)常见动词有：like, demand, expect, promis
3、e, begin, determine, refuse, offer, fail, manage, learn, seem, intend, forget, want, prepare, pretend, refuse, plan, afford, wish等 They wanted _to get___( get ) on the bus, didn’t they? He said he wished __to be____( be ) a professor.
