（介词选择）He won't come back ___ five.A.before B.after C.by

来源：学生作业帮编辑：作业帮分类：英语作业时间：2024/05/21 15:57:08

本题选A
根据句意；他在5点以前不会回来
B 在.之后,不合题意
C通过,不合题意
再问： C.by不仅只有“通过”的意思啊，也有“到……为止”“在……之前”的意思啊！
再答： by the time是到……为止，一般用在完成时里这里的before是“在……之前明白了吗
再问：不明白！为什么不能用by？ “在五点钟之前，他不会回来。” 这样翻译有错吗？
再答：翻译是没问题，加将来的时间点用将来完成时。won't不是将来时吗。本题最好用until。在说明白点，如果要用by，必须是by the time。而您这句话里没有

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