1.Parents are taught to understand how important education is to their children's future.此句中的how为什么不能用so来代替?可以说成"so important education is "( education is so important)吗?2.After what seemed like hours he came out with a bitter smile.此句中的what为什么不能用it?
问题描述：
1.Parents are taught to understand how important education is to their children's future.此句中的how为什么不能用so来代替?可以说成"so important education is "( education is so important)吗?
2.After what seemed like hours he came out with a bitter smile.
此句中的what为什么不能用it?
答
1.how引导的宾语从句,how关系副词在从句中作状语 so可做形容词副词就是不能作为关系词引导一个句子
2.又是一个主从复合句what关系代词 在主语从句里作主语it 同上只是一个代词而不是关系代词所以不可以引导一个句子