He’s been quite helpful，______？A.hasn’t heB.is heC.has heD.isn’t he
He’s been quite helpful，______？
A.hasn’t he
B.is he
C.has he
D.isn’t he
B.is he
C.has he
D.isn’t he
参考解析
解析：本题考查反义疑问句的用法。
题目意为“他帮了不少忙，不是吗？” 反义疑问句的主要形式由两种：陈述部分肯定式+疑问部分否定式 ；陈述部分否定式+疑问部分肯定式 。根据题意，陈述部分是肯定的，且's是has的缩写，因此疑问部分应该用否定式，且用hasn't来反问。
题目意为“他帮了不少忙，不是吗？” 反义疑问句的主要形式由两种：陈述部分肯定式+疑问部分否定式 ；陈述部分否定式+疑问部分肯定式 。根据题意，陈述部分是肯定的，且's是has的缩写，因此疑问部分应该用否定式，且用hasn't来反问。
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