U 代表；利益for, in the interests of, or as the representative of (sb else)

　behalf　的意思是“代表，利益”，作“利益”解时表示“为了…的利益”，在英式用法中常用on behalf of...，在美式用法中常用in behalf of...。

　in ～ of 　〈美〉为了…的利益；作为…的代表或代言人
　in sb's ～ 　〈美〉为了某人的利益，为了某人；代表某人，作为某人的代言人
　on ～ of　代表，为了…的利益；作为…的代表或代言人
　on sb's ～　为了某人的利益，为了某人；代表某人，作为某人的代言人
　appeal to you in sb's ～　替某人向你说情
　speak in ～ of sb　代表某人发言
　appeal to you on sb's ～　替某人向你说情
　speak on ～ of sb　代表某人发言

 ♣ on〔in〕 behalf of/on〔in〕 sb's behalf
1. 代表某人，作为某人的代言人as the representative of sb or instead of them
　A lawyer acts on behalf of his client.　律师作为当事人的代言人。
　A solicitor issued a statement on behalf of the victim's family　一位初级律师代表受害者家庭发表声明。
　As her lawyer, I act on behalf of Mrs. Jones by going to court.　作为琼斯夫人的律师，我代表她到法院出庭。
　I'm writing on behalf of my mother to express her thanks for your gift.　我代表我母亲写信对你的礼物表示感谢。
　On behalf of everyone here I want to thank you for your help.　我代表在场的各位感谢你帮助了我们。
　On behalf of everyone here, I'd like to thank our special guest for his entertaining speech.　我愿代表在座各位向我们的贵宾表示谢意，感谢他为我们做了引人入胜的报告。
　On behalf of the company as a whole, I would like to thank you for all you work.　我代表全公司对你的工作表示感谢。
　On behalf of the department I would like to thank you all.　我谨代表全系感谢大家。
　He spoke on her behalf.　他代她发言。
　The mayor has asked me to speak on his behalf.　市长要我代表他讲话。
　The President can't be here today, so I'm going to speak on his behalf.　今天总裁不能来，所以我将代表他发言。
　Mr. Knight cannot be here, so his wife will accept the prize on his behalf.　奈特先生不能来，因此由他的夫人代他领奖。
　Ken is not present, so I shall accept the prize on his behalf.　肯没有出席，所以我将代表他领奖。
　Unfortunately George cannot be with us today so I am pleased to accept this award on his behalf.　不幸的是乔治今天不能来了，故而我很荣幸能替他领奖。
2. 为了某人的利益；为了某人because of sb; for sb
　I'm collecting on behalf of the blind.　我正在为盲人进行募捐。
　They campaigned on behalf of asylum seekers.　他们为政治难民发起运动。
　They raised money on behalf of the orphans.　他们为孤儿募款。
　We collected money in behalf of the homeless.　我们为帮助无家可归者而募捐。
　Don't worry on my behalf.　别为我担心。
　Please don't leave on my behalf.　请不要因我而离开。
　A number of scientists are campaigning on our behalf.　许多科学家正在为我们进行活动。
　She intervened with the immigration service on his behalf.　她为了他去和移民局交涉。

　［同义词］ advantage, benefit, good, interest