1.todo2.-ing3.done1. 谓语动词:概述:2. 非谓语词:在句子中担任谓语的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讲解一 :谓语动词与非谓语动词判别谓语动词及非谓语动词的方法1. She got off the bus, She got off the bus, _ _ (leave) (leave) her handbag on her seat.her handbag on her seat.2. She got off the bus, She got off the bus, butbut _ _ (leave) (leave) her handbag on her seat.her handbag on her seat.leavingleft非谓语动词使用条件非谓语动词使用条件一个句子一个句子当中,当中,已经存在一个已经存在一个主句主句(谓语动词)(谓语动词),又没有又没有连词连词的情况下的情况下, , 还有别的动词出现时。还有别的动词出现时。 1.Themantookoutthekey,_(open)thedoorandentere