Tommy had already swallowed them!中为什么用had而不是用have

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第1个回答 2019-12-25

had 表示过去完成时
现在完成时用has
用has还是had都是对的取决于时态

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have had done怎么用 have already been had already done already done什么意思 swallowed是什么意思啊 be already to already had has already was already