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Everyonemustdressup.Ifyou,youcan'tgoin.为什么用don't而不用won't

题目详情
Everyone must dress up.If you ____,you can't go in.为什么用don't而不用won't
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答案和解析
if 当如果时,主句用将来时,从句用一般现在时
if 后边的句子是从句哦·····
主句是 You can't go in
所以用一般现在时,don't