如何确定动词的适当形式?例如to后面要加动词原形,正在进行时动词要加...答:He was heard to sing every day. 那时每天都听到他唱歌.十六、跟带to的动词不定式作宾语补足语的动词还有: ask, beg, leave, like, love, hate, prefer, order, teach, tell, believe, find, know, want, think, understand, would like等 形式为: ask sb to do sth Would you like me ...