whom,who,whomever,whoever,在定语,名词性从句中的区别

whom,who,whomever,whoever,在定语,名词性从句中的区别
；no matter wh-与wh-ever的区别（即如何让判断让步性定语从句.）希望有例句说明,和易混淆的例句,

引导让步状语从句时,两者可互换
No matter what/Whatever you say,i will not believe you.
但 no matter 不能引导名词性从句(就是主,宾,表,同位语从句)
I don't believe whatever you say.
这句句子中whatever的位置作believe的宾语 所以不能用No matter what
一道题中同时出现这2个选项,当然要选whatwver了,
因为能用no matter what 就一定能用whatever
再问： 那如何判断让步性定语从句呢？还有whom,who,whomever,whoever如何区别？
再答： 首先你来看 No matter what/Whatever you say,i will not believe you. I don't believe whatever you say. 让步状语从句是状语从句的一种，所以句子是完整的，不缺成分例如第一句中i will not believe you 主谓宾齐全 ，所以No matter what/Whatever you say 这句是状语 而后面一句I don't believe whatever you say. 中whatever you say. 作believe的宾语 所以是宾语从句 所以你的概念首先错了 是让步状语从句 而不是让步定语从句 whom和who 的区别 who 可以做主语，又可以做宾语 whom 只能做宾语 例子：1,who are you? 不能是whom are you? 2,This book belongs to whom/who?两者都可以 1.who指人，在从句中做主语 (1) The boys who are playing football are from Class One. (2) Yesterday I helped an old man who lost his way. 2. whom指人，在定语从句中充当宾语，常可省略。 (1) Mr. Liu is the person (whom) you talked about on the bus. (2) Mr. Ling is just the boy whom I want to see. 注意：关系代词whom在口语和非正式语体中常用who代替，可省略 简单点说就是： Whom 只能出现在从句里面或是介词（如 to, from, at, of..）后面。 1． Whom 出现在从句里面时，所有用whom的地方都可以用who代替。Whom 这个词只出现在很正式的书面语。口语不用。 2． Whom 在介词（如 to, from, at, of..）后面时，不可替换。
再问： Give it to _____ asks for it first 对于这个句子用whomever说是不对的，to不是介词吗？
再答： 因为空格在后面那句句子中充当主语 所以不能用whomever 只能用whoever