already的词典解释是:已经(用already时,英国英语中动词用完成时态,美国英语有时则用一般过去时)You usealready to show that something has happened, or that something had happened before the moment you are referring to. Speakers of British English usealready with a verb in a perfect tense, putting it after 'have', 'has', or 'had', or at the end of a clause. Some speakers of Americ