I'm not sure which room he lives in.这个句子为什么不能写作 I'm not sure which room does he live in.或者I'm not sure in which room does he live .
问题描述：
I'm not sure which room he lives in.这个句子为什么不能写作 I'm not sure which room does he live in.
或者I'm not sure in which room does he live .
答
which room he lives in.是从句而不是特殊疑问句，故应该用陈诉语序
答
间接引证从句时，后面从句要用陈述句语序，所以不能再用does了
答
宾语从句不需要用疑问句，陈述句就可以···
答
在宾语从句中不管原来的语序是什么语序，一律都用陈述语序，即主语在前，谓语在后。
答
宾语从句,陈述句词序
I'm not sure which room he lives in
I'm not sure in which room he lives
如果I'm not sure which room does he live in.从句部分which room does he live in.就成了疑问句词序了