train leaves at 6pm
the train leaves at 6pm.So I have to be at the station ( )5.40pm at the lastest.
A.by B.before
选A.是最迟到.为止的意思?那before为嘛不对
人气：396 ℃ 时间：2020-09-28 16:18:06
解答
楼上的回答不错.
the train leaves at 6pm.So I have to be at the station before 5.40pm.
the train leaves at 6pm.So I have to be at the station by 5.40pm at the lastest.
你可以体会下二者的差别.
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