Jack didn't come to our meeting last time,did he? No,he_____

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Jack didn't come to our meeting last time,did he? No,he_______,We had changed our plan.
A.needn't have to come
B.didn't need to come
C.needn't have done
D.shouldn't have come
答案不是b..

选A
再问：能很果断的说出为什么吗么。
再答： needn't为情态动词，解释为不需要而选项D中have后加come，不成立。have加to加动词原形，解释为不得不。而D中没有to，不成立。have加动词的完成时，而come并非现在完成时，不成立。选项C中have done在题目中解释不通。所以选A。
再问：就是这个B的问题啊为什么不对
再答： did't need中need为动词，而结合题目看，need在本题中的意思应为需要，所以选A。

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