used /ju:st/ I. v. used to 惯常 (与不定式连用，否定式为used not 或 didn’t use 疑问句可用used开头，也可用did 开头)：He is not what he used to be. 他已不是从前的他了。He usedn’t/didn’t use to come.他过去不常来。Used he /Did he use to come by bus? 他过去常乘公共汽车来吗? You used to go there, usedn’t/didn’t you? 你过去常到那里去，不是吗? ‖II. adj. 1. be used to习惯于…的(跟名词或v-ing连用)：［考句］Although punctual himself, the professor was quite used to students’ being late for his lecture.尽管教授本人很守时，但他已经习惯了学生上课迟到。 2. 用过的, 旧的：a used car 二手车