Question

反义疑问句:Everyone has a flower in his hand,____? 用haven't they 还是 don't they还是都可以

Answer 1

has 作实义动词，答案是 don't they ?

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追问

答案只有 haven't they 和didn't they 应该怎么选

追答

如果不出错，只能选 haven't they ; 因为have/　has　作为‘有’时，基否定式也可用haven't / hasn't ，不过一般是加助动词较好，

has 是一般现在时，不能用didn't they

Answer 2

这里的has是实意动词，表示拥有的意思。前一句是肯定，后面应该是否定，所以答案是don‘t they？