Which uses of the present simple tense are they examples of?请解释一下这句话的语法结构.
问题描述：
Which uses of the present simple tense are they examples of?请解释一下这句话的语法结构.
这是高一英语Module1中Grammar1中一句话,为什么不是Which uses of the present simple tense do they example of?
答
example 是名词哟