Question

--- I was lucky to win a gold medal in the 800-meter-race.
--- You __________ through tough training.

A．must go

B．should go

C．must have gone

D．should have gone

Answer 1

C

试题分析：句意：——我幸运的在800米赛跑中得了金牌。——你一定经过了艰苦的训练。根据句意，与过去有关，排除ＡＢ。Must 一定，必须，must have done（过去)一定做了某事，should应该，should have done本应该做某事而实际没做，故选Ｃ
点评：情态动词+have done ,表示对过去的虚拟或推测。记住这些结构的意思：shouldn’t have done 本不应该做某事，实际上却做了；needn’t have done本不需要做某事，实际上却做了。can’t/couldn’ t have done不可能做了某事，