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    • It was …since It was…when it was…before 能否说明一下有什么

    It was …since
    It was…when
    it was…before
    能否说明一下有什么区别和意思！谢谢！

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    第1个回答  2016-01-18
    第一个是自从……它是…，第二个是当…它是…，第三个是在…之前，它是…
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    before and sincebefore or afterbefore and aftersince beforesince before连用sincebefore区别before和since的用法after sincesince和before的句型
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