what he wants to tell us isn,t known.

问题描述:

what he wants to tell us isn,t known.
when you will come back doesn,t matter
为什么一个用is 一个用does

很高兴为您这不是很正常吗?what he wants to tell us 与when you will come back两个都是主语从句,谓语肯定用单数is是单数,does也是单数.不要把does看成复数了,这是谓语动词的第三人称单数.------------------------...