①He looked so tired this morning.He（ ）late last night.
①He looked so tired this morning.He（ ）late last night.
A.must stay up
B.must have stayed up
C.was staying up
D.has stayed up
之前有人这样解析：must do表示一定要做什么,must have done是一定做过什么,所以选B.
②He said that the visitors（ ）trouble；others they would have arrived by that time.
A.must meet
B.must have
C.would have met
D.should have met
为什么呢?
A.must stay up
B.must have stayed up
C.was staying up
D.has stayed up
之前有人这样解析：must do表示一定要做什么,must have done是一定做过什么,所以选B.
②He said that the visitors（ ）trouble；others they would have arrived by that time.
A.must meet
B.must have
C.would have met
D.should have met
为什么呢?
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zse7148123 幼苗
共回答了4个问题 举报
1.must have done是对过去的虚拟。
2.said that 后加的是宾语从句，must 和have是分开的，have trouble是一起的，是遇到麻烦的意思。
2.said that 后加的是宾语从句，must 和have是分开的，have trouble是一起的，是遇到麻烦的意思。
1年前
1
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