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since引导的从句是什么时态
人气:413 ℃ 时间:2025-12-18 23:53:52
解答

可以是过去时也可以是过去完成时.如果是过去时它的从句用现在完成时,如果是过去完成时它的主句用过去时.如 It is /has been five years since he came here.(只有这种句型主句可用一般现在时代替现在完成时.)
It was five years since he had come here.

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