请先看下题：
_____ you say is of no use now.
A. No matter where
B. Whatever
C. No matter what
D. No matter how
答案选B。又例如：
No matter what happened, he would not mind. =Whatever happened, he would not mind.
不管发生什么，他不在意。
替换方法：
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。
（whatever they're given是宾语从句）
（倪现强）