If I (leave) ______ a little earlier, I would have caught the train.had left由if引

游客2023-09-22  12

问题 If I (leave) ______ a little earlier, I would have caught the train.

选项

答案 had left

解析 由if引导的非真实条件句中,如果表示与过去事实相反,从句用过去完成时,主句用“should (would,could,might)+have done”的形式。
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