问题描述：
定语从句和同位语从句辨析
The reason why he was chosen remains unknown.为什么是定语从句
The idea why he was chosen attracted our attention.为什么是同位语从句
只辨析这两个句子即可，
第一个句子为甚么why he was chosen不能理解为the reason的同位语
The reason why he was chosen remains unknown.为什么是定语从句
The idea why he was chosen attracted our attention.为什么是同位语从句
只辨析这两个句子即可，
第一个句子为甚么why he was chosen不能理解为the reason的同位语
问题解答：
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