Forming the 'perfect' tenses with the auxiliary 'have'

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Forming the 'perfect' tenses with the auxiliary 'have'

助词have后跟过去分词时,组成'完成'时态:
现在完成时 -> He has understood.他懂了。
过去完成时 -> She had done a great job.她完成了一件很棒的工作。
将来完成时 -> They will have finished by tomorrow. 他们明天应该就完成了。
条件式完成时 -> We would (或者We'd) have won the game if we had had a great player like him.如果我们有像他一样棒的选手,我们肯定就赢了这场比赛了。
助词+have+过去分词 -> She must have called.她应该已经打过电话了。

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