we middle school students have had many tests or e有了have为什么还加had

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we middle school students have had many tests or e有了have为什么还加had
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we middle school students have had many tests or e有了have为什么还加had
we middle school students have had many tests or e
有了have为什么还加had

we middle school students have had many tests or e有了have为什么还加had
这是have 的完成式,构成现在完成时态,表明动作已经完成,但对目前仍有影响.