3.-What do you think the noise was?　　--It ___________ a cat.　　A.m_英语解答

3.-What do you think the noise was?　　--It ___________ a cat.　　A.may be B.might be C.could have been D.might have been
D 为什么B不可以啊?

人气：272 ℃　时间：2020-02-02 18:40:48

解答

情态动词表推测时他们的过去式并不表示过去发生的事,情态动词对过去的推测的结构通常都是could/should/might+have done