中考英语频道为大家提供初三英语高频常考知识点梳理：Unit2，赶紧复习一下吧！更多中考英语复习资料请关注我们网站的更新!初三英语高频常考知识点梳理：Unit21. used to do sth. 过去常常做某事否定形式： didn’t use to do sth. / used not to do sth.如：He used to play football after school.放学后他过去常常踢足球。Did he use to play football? Yes, I did. No,...