用I don't know.I didn't know作主句改写成宾语从句
一般疑问句类型
Is he a teacher
特殊疑问句
Where are you from?
人气：299 ℃ 时间：2019-10-19 04:40:44
解答
I don't know if he is a teacher.
I didn't know if he was a teacher.
I don't know where are you from.
I didn't know where were you from.
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