英语选择：What would have happened if you ___ her child 应选什么?为什么?A.hadn't helped B.couldn't help C.wouldn't help D.didn't help

英语选择：What would have happened if you ___ her child 应选什么?为什么?A.hadn't helped B.couldn't help C.wouldn't help D.didn't help
英语选择：What would have happened if you ___ her child 应选什么?为什么?
A.hadn't helped
B.couldn't help
C.wouldn't help
D.didn't help

英语选择：What would have happened if you ___ her child 应选什么?为什么?A.hadn't helped B.couldn't help C.wouldn't help D.didn't help
A. hadn't helped
本题是虚拟语气的基本句型.“与过去相反的假设”主句用过去将来完成时"would have done sth.",if引导的条件从句用过去完成时“had done sth.”.从本题主句出现“would have happened”,可判断是与过去相反的假设,所以if引导的条件从句就用过去完成时“had done sth.”的结构,即选A
整句意思：如果你（当时）没有救这个孩子,会发生什么事?

A.
因为would have done在the conditional rule里面, if后面应该跟the past perfect tenses, 如果你懂我的解释 :D