why 和for which 在定语从句中一样么

why 和for which 在定语从句中一样么 在定语从句中Why为什么等于why=for which 不是Why＝for what 定语从句中什么时候用for which代替why why 和 for which 替换的语法问题.定语从句中,why 和 for which 可以替换,在实际例句中,不太理解,如：1 Is this the reason why / for which he refused our offer 这就是他拒绝我们帮助他的理由吗?for which 这里,whic 定语从句,求教that在什么情况下可以和when,where,why或介词+which引导的定语从句互换呢? 在定语从句中which in,which on,which for,which怎么用? 名次性从句中for which 和why的区别 Nobody knows the reason why he is often late for school.把why改成that/which引导的定语从句 which,in which,on which,for which ,of which 有什么区别,在定语从句中怎么用 that和which在定语从句中有什么区别 when 和 which 在定语从句中用法区别 which 和where 在定语从句中的区别 what 和which 在定语从句中的区别? 定语从句 of which 和why的区别额.........打错了....本来想问for which和why的区别的~一道选择题上介俩选项都出现了......... 在定语从句中,whose,when,which,why,分别怎样使用? 定语从句在什么情况下用what how which where when还有 why in which定语从句我想问下在定语从句中,in which是不是等于why啊?是不是有的时候不等于啊? of which,about which,和其他介词+which在定语从句中用法