wh-ever 既可引导宾从 也可引导状从 . no matter wh 只能引导状从 , 在引导宾从的时候可以互换, 状从不可以.i will take whatever u give . i will take no matter what you give. whatever you say , i will believe u .
当引导状语从句时可以互换,而引导名词性从句时就只能用wh-