题目

used to \be uesd to 的疑问＼否定的形式

提问时间：2020-10-10

答案

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)