非谓语动词的形式非谓语动词包含四种形式,即不定式、动名词、现在分词和过去分词。其中,每种形式按照发生时间和主被动又包括不同的子形式。具体如下:1. 不定式基本形式:to do(表示主动,并且一般表示将来)被动式:to be done(表示被动,并且一般表示将来)进行式:to be doing (表示主动和进行)完成时:to have done(表示主动和完成)完成被动式:to have been done(表示被动和完成)完成进行式:to have been doing (表示主动和完成进行)The teacher told us to do morning exercises. 老师让我们做早操。The car to be bought is for his sister. 要买的这辆车是给他的姐姐的。 She pretended to be reading when the teacher came into the classroom. 老师进来时,她假装正在读书。The thief is said to have