问题
选择题
—Daniel must have lost his job in that unemployment crisis, he?
—I don’t think so. Yesterday I saw him working together with his colleagues.
A.didn’t
B.doesn’t
C.mustn’t
D.hasn’t
答案
答案:A
当must表示推测时,其后反意疑问句部分的时态取决于实际时态而不是must后的形式; 本题中“失去工作”的动作发生在过去,因此用did来反问。