he has three classes every day 对划线部分提问,画线是three

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he has three classes every day 对划线部分提问,画线是three

How many classes does he have every day?
因为classes是可数名词,对其数量提问应用how many.
has在句中是动词,改成疑问句应以助动词does修饰之,has在助动词does后面时就应变为原型have.
相信我没错的.

应该是How many classes has he every day?

How many classes has he every day?