问题描述：
一般疑问句中 Did的后面的动词的形式用什么?
例如 你在家里吃午饭了吗吗?
Did you have breakfast at home?
还是Did you had breakfast at home?
例如 你在家里吃午饭了吗吗?
Did you have breakfast at home?
还是Did you had breakfast at home?
问题解答：
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