whatever与no matter what的区别

whatever可以引导让步状语从句,也可引导名词性从句.whatever引导让步状语从句时,可以换成no matter what; 引导名词性从句时,相当于anything that,不能用no matter what替代,因为no matter what只能用来引导让步状语从句.如：
Whatever (=No matter what) you do,you should do it well.无论你做什么事情,都要做好.
I'll do whatever (=anything that) I can to help you.我将尽力帮你.
Don’t trust him,no matter what he says.无论他说什么,都别信.(让步状语从句) 
Wherever you go ,whatever you do ,I will be right here waiting for you .无论你走到哪里,无论你做什么,(让步状语从句) 
Whatever you do,do it well (让步状语从句) 
whatever作连接代词引导名词从句：主语从句、宾语从句,意思是“所……的任何事情”.如:
Whatever she did was right.她所做的一切都是对的.(主语从句) 
You can take whatever you like.你喜欢什么就拿什么吧.(宾语从句) 
whatever作连接形容词,意为“无论什么样的”.应当注意,此用法的whatever必须同其被修饰的词一起放在从句前引导从句.如:
I can do whatever work I can find.我可以做我能找到的任何工作.
Whatever difficulties we meet,we can work them out.无论遇到什么困难,我们都能解决它们.