变特殊疑问句
问题描述：
变特殊疑问句
The backpack on the desk is the teacher's
分别对the backpack、on the desk、the teacher's提问
写出原因!（按照一般方法改起来有点怪）
答
The backpack作为名词,用what提问,即What on the desk is the teacher's?on the desk修饰the backpack 用which （哪一个）提问,即Which backpack is the teacher's?the teacher's做宾语（所有格形式）用whose,即Whos...