一个英语知识点不会，麻烦大家了！

no matter what 只可以引导条件状语从句
而wahtever不仅可以引导条件从句 还可以用做代词
anything that应该是定语从句

"no matter +疑问词" 或"疑问词+后缀ever" 。

例如：
No matter what happened, he would not mind. =Whatever happened, he would not mind.
不管发生什么，他不在意。

替换：
no matter what = whatever
no matter who = whoever
no matter when = whenever
no matter where = wherever
no matter which = whichever
no matter how = however

注意：no matter 不能引导主语从句和宾语从句。

(错）No matter what you say is of no use now.（对）Whatever you say is of no use now. 你现在说什么也没用了。（Whatever you say是主语从句）

（错）Prisoners have to eat no matter what they're given.
（对）Prisoners have to eat whatever they're given.囚犯们只能给什么吃什么。