别这么研究,因为副词在句中的位置是很灵活的,句首句中句末往往都可以,所以一般来说它什么从句都可以加.
我举个例子吧：
比如定语从句：she's the girl who loves you.从句前没有副词
你都可以加一个she's the girl absolutely who loves you.
再如状语从句：I will call you as soon as I'm free.
我也加一个：i will call you weekly as soon as i'm free.
是不是?：）