Question

英语语法

I would have told him the answer had it been possible but I _C__ so busy then.
A. had been B. were C. was D. would be
这里用was?这句是虚拟语气吗？

Answer 1

I would have told him the answer had it been possible这是一句虚拟语句。
had it been possible是“if it had been possible"的倒装省略句
but I was so busy then则是一般过去式，是真实的，确实发生了的事情。所以用was

Answer 2

这是由 but 并列的两个句子 属于并列句
第一个句子 是与过去相反的虚拟语气 从句过去完成时 主句 过去将来完成时
虚拟条件句 省略了if 故倒装
but 后面的句子 是真实句。
这不属于错综虚拟 。

Answer 3

不是，因为这句应该是错综虚拟条件句，后面表明真实的情况。

Answer 4

语法归属：情态动词+have done sth 表示对过去的事情（也就是已经发生了的事）推测、假设等
例： could /would have done 本来能够做某事/原想做某事
should have done 本应该做某事，而实际没有做
need have done 本需要做某事而没有做
may have done 可能已经做过某事了
must have done 一定做过某事