Question

He failed in the driving test again. He _________. A. must have disapointed B. must have been

He failed in the driving test again. He _________.
　　A. must have disapointed B. must have been disappointed
　　C. might be disappointed D. couldn’t be disapointed
答案要详解。

Answer 1

选B
must have done表示对于过去的事情的一种推测。somebody be disappointed表示失望。所以后半句的意思是“他一定很失望”

追问

为何不选a

追答

A里面，没有be动词啊。be disappointed 才表示失望。B选项中的been就是be的过去分词形式。

Answer 2

B：must have be对过去事实肯定的猜测
他一定很失望（前面说了考试又失败）
可以推测出答案

希望能帮到你

追问

为何不选a

追答

A have 后面如果直接跟，那就换成名词
have+过去分词是被动了，怎么解释也不通啊