Mid 18th century; earliest use found in Samuel Richardson (bap. 1689, d. 1761), printer and author. From had, past tense of have + been, past participle of be.
英语词典包含243303条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。