Question

We didnt see him at the lecture............题在下面。

We didnt see him at the lecture. Neither did anyone else. He___it,for the lecture had nothing to do with his research. A shouldnt have attended B neednt have attended C cant have been absent form D didnt need to attend 求翻译！！再把各个选项都分析一下！！小弟高三啊啊！！望各位学哥学姐 慎重 回答 啊啊啊！！

Answer 1

我们在演讲会上没有看见他。也没有其他人看见他。他不需要去参加这个演讲，因为这个演讲与他的研究没有关系。
选择D
AB shouldn't/needn't have done 都是本不该做某事而实际上做了。
C是不能缺席的意思。
所以选D

Answer 2

D
根据语境，他没必要出席这讲座。（他也没出席）。故排除 B(本没必要出席)
A/C语境不通顺。

Answer 3

A是本不应该去却去了
B是本不需要去却去了
C是不可能缺席
D没必要去

根据语意，这里没有虚拟语气，所以选D