在用过去式造句时，什么时候用HAVE 什么时候用HAD？THX！
最好能帮我分别举个例句，谢谢！
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Answers · 3
1
have+done.是现在完成时，表示已经做完成的了，比如：i have been there twice我去过那儿两次。
had+done是过去完成时，表示过去的过去，如：i had done this before you told me.在你告诉我之前我已经做完了
希望能帮到你
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