1.	On behalf of my colleagues and myself I thank you.
	我代表我的同事以及我自己向你表示谢意。
2.	Ken is not present, so I shall accept the prize on his behalf .
	肯不在场,所以我代表他领奖。
3.	The legal guardian must act on behalf of the child.
	法定监护人应该维护这个孩子的利益。
4.	I am appealing on behalf of the famine victims.
	我代表饥民恳求援助。
5.	He doesn't have to exert himself on my behalf .
	他不必为我费那么大力气。

 

in behalf of sb   为了帮助某人
on behalf of sb   1) 代表某人 2) 因为某人， 为了某人 3) 为了帮助某人