有主语从句吗

问题描述:

有主语从句吗
But you have to know the reason why she is smart is because she always picks other people's brains.

冒犯地指出一点儿小错误:
这是哪位大神写的句子,the reason is because……这种搭配根本不存在(原因是因为……呵呵,显然是个病句)
改为But you have to know the reason why she is smart is that she always picks other people's brains 就没什么问题了
意思是“但是你必须要知道她聪明是因为她总是套用别人的思路
在分析一下句子成分:
why she is smart 做the reason 的定语,是定语从句
整个儿the reason(why she is smart)is that she always picks other people's brains是know 的宾语从句,省略了引导词that
在宾语从句中又有一个表语从句,即that she always picks other people's brains 做is 的表语从句
确没有主语从句