问题描述: 问一下may,can,must,could提问时该怎么回答? 1个回答 分类:英语 2014-10-31 问题解答: 我来补答 may:肯定may 否定mustn't can:can can't must:have to do don't have to do could:肯定sure certainly of course 否定 certaintly not,of course not 记得给分哦 展开全文阅读