问题
选择题
He knows so much about the story. He must have read the book,_____?
A．mustn’t he
B．doesn’t he
C．hasn’t he
D．didn’t he
答案
答案：C
“He must have read the book”中must 表示“一定，想必”等推测意义，而不表示“必须、禁止”等意义。“He must have read the book”相当于“I’m sure he has read the book”相一致，即用hasn’t he, 而不用mustn’t he。