what we have said has made her so unhappy.与what have we said to make her so unhappy?

问题描述:

what we have said has made her so unhappy.与what have we said to make her so unhappy?

What have we said to make her so unhappy?这是一个特殊疑问句,如果把句子还原成We have said what _______her so unhappy,显然to make 作结果状语.
What we have said has made her so unhappy.成了主语从句