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several weeks had gone by

时间:2023-02-13 16:58:01

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several weeks had gone by

问题补充:

several weeks had gone by

答案:

很明显,前面半句是过去完成时,表示过去的过去,后面半句是过去时.因此前面的动作发生在后面的之前所以要用before,而不能用since,就是这个道理 解

======以下答案可供参考======

供参考答案1:

选before.等我意识到画丢了,已经几个星期过去了。

供参考答案2:

应该是before

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