Mary has two brothers,________ A.is she B.does she C is not she D does not she

问题描述:

Mary has two brothers,________ A.is she B.does she C is not she D does not she
为什么选D

这边是反义疑问句
前面是肯定 后面就要用否定 排除 A和B
又因为has是动词have的三单形式 所以反义疑问句用助动词does 排除C
所以选择 D does not she =doesn't she为什么用does因为has是动词have的三单形式 所以反义疑问句用助动词does