Question

虚拟语气选择题。I （）you some money，but I hadn't any on me then.

A.would lend
B.would have lent
C.could lend
D.may have lent
答案选B,但为什么不选D或者A呢？

Answer 1

would have +done 是表示本来将可以但没有做到（虚拟语气）
may have lent 指的是过去不肯定的推测--沐舒坦must have lent 过去很肯定的推测
如：he was not at home.where was she?
i am not sure, he may have been to Hongkong.
3. would do 表示过去常做某事
去将来时
意愿做某事

Answer 2

I hadn't any on me then,
主句是过去式 虚拟语气要用过去完成式 may要换成might

Answer 3

will表示意愿，所以答案从a和b中选，would 单纯表过去时，而would have lent 表示想干某事却最终没干

Answer 4

看后面半句话可以知道整句话的发生时间是过去，对过去的情况进行假设要用would have done

Answer 5

选B，楼上的解释很清楚了