whatever 与 no mater water的区别

1.引导让步状语从句时可以互换：
No matter what you may do,do your best.
=Whatever you may do,do your best.
2.名词性从句，方式、地点、时间状语从句只能用"wh+ever"
Eat whatever you like.
(此时不能用no matter what)