这两个单词意思都一样,都是无论什么的意思
但no matter what只能放在句首,在句中,只能用whatever
"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.