have作“有”解释时是一般的行为动词,而行为动词的否定式或一般疑问句当中都必须加助动词do.
行为动词必须用do提前构成一般疑问句.
这句可以改为：
Have you got an appointment?
have you got sth=do you have sth?
Do you have an appointment?为什么要用do啊
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