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  • 任甜钿 任甜钿

    may have done可能已经做了某事 must have done一定已经做了某事 should have done 本来应该做某事缺没有做 shouldn’t have done本来不应该做某事,却做了 needn‘t have done本可不必这样做 could have done本来可以做,却没有做,有惋惜的感觉 can’t have done不可能做过 这些词都要注重虚拟时态的运用

    2020-12-22 喜欢(0) 回复(0)