no matter what 和whatever的区别

Question

还有no matter how 和 however
就是这种类型的，到底有什么语法用法区别，不都是“无论 都”的意思吗？
请举例子具体说明！！！

Answer 1

1whatever可用作连接词或连接副词，引导让步状语从句，表示“无论，不管”的意思。此时，可用no matter what结构来替换其意完全相同。位置前后置都可以。
2whatever还可以引导名词性从句，同时起先行词和关系代词的作用。相当于anything that或all that，有任何一切这类意思。此时不能用no matter what替换。
3what和ever分开写，则作“到底，究竟”解，这时它和on earth, in the world相同，起强调作用。e.g. What ever do you mean? = What do you mean on earth?
4what也可以引导名词性从句意为“the thing which”与“whatever”含义相同。
5用法完全与whatever相同的词还有whichever,whoever.

Answer 2

一、引导让步状语从句时，而这用法等同
e.g. However late he is, his mother will wait for him to have dinner together.
= No matter how late he is, his mother will wait for him to have dinner together.
二、引导名词性从句时，只能用however
e.g. I'll give you however much money you need.（宾从，此时however不能替换成no matter how）
whatever和no matter what同上
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Answer 3

两者都能引导让步状语我是知道的，然后涅?
然后，whatever还可以引导名词从句，(主、宾、表从句)
包括其它的:who,
when,
how,
where加no
matter在前，或在后加ever(where加ver),都一样。
no
matter
+wh-只引导状语从句;而wh-ever可引导状语从句，还可引导名词从句。
Wherever
you
go,
whatever
you
do,
I'll
be
right
here
waiting
for
you.(状语从句)
=No
matter
where
you
go,
no
matter
what
you
do,
I'll
be...
Give
your
child
something
necessary.
Do
not
give
him
whatever
he
wants.
(宾语从句)