UC知道这句话的 before
来源：百度知道 编辑：UC知道 时间：2024/06/30 19:29:43
请问下面这句话 before 可以换成 ago 吗？还是因为是完成式的关系，不能用 ago 所以用 before 呢？
He had run away from home five days before.
He had run away from home five days before.
用before
就得用完成时态
如果用ago 就得改成 He ran away from home five days ago.
用ago的话不能用完成式，ago是一般过去时的标志
before后面有省略，应该用一般完成式
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