If we had found him earlier ,we ______(solve the problem more easily) 完成句子,并说明为什么

问题描述:

If we had found him earlier ,we ______(solve the problem more easily) 完成句子,并说明为什么
这样填,

could have solved the problem more easily
理由 根据从句判定,本句为对过去虚拟的虚拟语气.从句用had done,主句用could have done
如果我们早点找到他,我们很容易就能解决这个问题.(实际上没早点找到他,问题也没解决)
供参考.也就是说 if had....would have 是一个公式?对。这是条件状语从句对过去虚拟的标准形式。