no matter what只能引导状语从句,不能引导名词性从句(例如主语从句,宾语从句)
而whatever既可以引导状语从句,又可以引导名词性从句,他用的范围比较广,所以当whatever和no matter what一起出现的时候,考点肯定是考“no matter what不能引导名词性从句”,所以考题出现的时候就选whatever而不选no matter what
No matter what happened,he would not mind.
Whatever happened,he would not mind.
这两句都是对的,因为这两句从句都是让步状语从句,而no matter what和whatever都可以引导,所以是对的
注:no matter what和whatever就是一个代表,像no matter how,no matter where之类的和wherever,whoever之类的是一样处理的