"He has resigned"是"他已经离职了"的英语表达。
"Resigned"这个词来源于拉丁语"resignare"，意思是"重新签署"或"重新交回"。在职场中，"resign" 意味着辞去工作。
例句：
He has resigned from his position as CEO. (他已经辞去了首席执行官的职位)
She resigned from her job due to personal reasons. (由于个人原因，她辞去了工作)
He tendered his resignation letter last week. (上周他递交了辞职信)