含ever的和不含ever在用法上的区别!例如：whatever、whoever、wherever、however

含ever的和不含ever在用法上的区别!例如：whatever、whoever、wherever、however whatever,whoever,whichever,whenever,wherever however的用法,要全! whenever,wherever,whatever,whichever,whoever,however的用法 whatever、whoever、wherever、however这样的词怎么用? whatever,whoever,whereever,however的区别 however,whatever,whenever,wherever的区别 what ever和whatever的区别 ever...however...whoever...whenever.whatever...这5个 whatever whenever however wherever 四者的意思、用法及区别? 英语 whatever,whenever,wherever,however,whoever,whichever what与whatever,who与whoever在用法上的区别 Whatever however wichever whoever whenever的意思和解释