whatever、whoever、whichever引导名词性从句的时候相当与什么词?

引导名词性从句时,相当于anything that/ anyone who
whichever还可以引导名词性从句时分为两种
A.whichever作连接代词,意为\"无论哪个;无论哪些\",连接宾语从句、主语从句.
B.whichever作连接形容词,意为\"无论哪个;无论哪些\".此时whichever必须同其被修饰的词一起放在从句前引导从句.
引导让步状语从句时.相当于no matter what/who/which