-Did Peter finish homework?-yes,he gave me this morning.
问题描述:
-Did Peter finish homework?-yes,he gave me this morning.
为什么用"did"不用has?
答
1因为指的是过去放生过的事而不是刀现在刚完成的事 用have的话就是完成时了 2那样的话动词应该改成finished 而且应该有明确的表示过去的时间状语
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