(1)must have +过去分词,表示对已发生情况的肯定推测,译为“(昨天)一定……”。如: My pain must have been apparent the moment I walked into the room, for the first man I met asked sympathetically: “Are you feeling all right?” (2)can’t/couldn’t have ...
—Where do you think ___ he ___ the MacBook Pro? —Sorry,I have no idea. A、/; bought B、has; bought C、did; buy D、does; buy (点击选项查看答案) do you think 是插入语,可以...
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