verb to have past participle问一下,谁知道这是什么词的形式?

verb to have past participle问一下,谁知道这是什么词的形式?verb to have + past participle问一下,谁知道这是什么词的形式?

热心网友

verb to have + past participle 这是动词不定式完成式,它表示的动作发生在限定动词表示的动作之前。如：I am very sorry to have kept you waiting. 对不起，叫你等了。（to have kept 发生在 am 所表示的时间之前)She seems to have read the book before.她好像看过这本书(to have read 发生在 seems 所表示的时间之前)

热心网友

这是动词不定式的完成时形式，表示这个动作在谓语动作之前发生. He happened to have read the book. = It happened that he had read the book. 他碰巧读过这本书.

热心网友

have是助动词，加上过去分词，应该是现在完成时的结构作谓语；如果跟在一个动词之后have前面要加to 那就是动词不定式的完成式.

热心网友

应该放到句子里来看才知道.就这样看应该是不定式的完成时态.