He must have finished it yesterday,didn't he?
为什么不是 haven't he?
或者hasn't he?
为什么原句不讲:He must finish it yesterday
人气:149 ℃ 时间:2019-11-17 05:33:59
解答
must have done 是对过去发生的动作最有把握的猜测,意思是“一定”在must have done 句型中 其反义疑问句 有两种情况对已发生的过去情况的推测,若陈述句谓语部分有“must have done”,而且有表示过去的时间状语,问句...
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