问题描述： used to \be uesd to 的疑问＼否定的形式 1个回答 分类：英语 2014-10-05 问题解答： 我来补答 疑问：did sb use to do sth 否定sb didn't use to do sth疑问：be(am is are were was) sb used to doing sth 否定:sb be not used to doing sth.(be随人称合数的变化而变化) 展开全文阅读
