what与whatever,who与whoever在用法上的区别

what与whatever,who与whoever在用法上的区别
1、( )you want has been sent here.
( )you want makes no difference to me.
括号里应填what还是whatever?为什么呢?
2、( )breaks the law will be punished.
( )robbed the bank is not clear.
括号里应填who还是whoever?为什么呢?

1.1 what 你要的东西已经送到了..
1.2 whatever 不论你想做什么都与我无关
2.whoever 不管谁触犯法律将得到严惩.
who 现在还不清楚谁抢劫的银行
二者的区别在于意思不一样
who指谁,是特殊疑问词
例如：who are you?
whoever是“无论谁”,引导主语从句,有时也引导宾语从句
类似的有“which”与“whichever”