( ) 15. Tom might have come to school in time for Professor Brown's lecture, .

来源：百度知道编辑：UC知道时间：2024/05/26 20:02:14

( ) 15. Tom might have come to school in time for Professor Brown's lecture, ______ .
A. if he got up early B. unless he had got up early
C. but he got up rather late D. but he had got up so late
是否能选D用过去完成时

选 A might have done 表示可能已经做某事（事实却非这样）

D不能选，D的意思是：但是他已经起得如此的晚。had got 过去完成时态是指过去的过去做某事，这里显然不是过去的过去，而是过去而已。

A是表示如果他起得早的话，这里用一般过去时，强调get up 这个动作，才是正确的

根据语义，是要补充汤姆不会吃到的理由，所以D是明显不对的，为A

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