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题目
You had your singing contest in your school last week
改为反意疑问句是didn' you还是hadn't you
为什么有的时候had是用didn' you,有的时候用hadn't you

提问时间:2021-02-10

答案
didn' you,因为这个是过去时,所以用did't you
用hadn't you是在过去完成时中用.例如,She had finished her work when we got there,hadn't she?
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