名詞 behalf:

1. as the agent of or on someone's part (usually expressed as "on behalf of" rather than "in behalf of");
2. for someone's benefit (usually expressed as `in behalf' rather than `on behalf' and usually with a possessive)

1. The agent spoke on behalf of his principal.
   代理人代表他的委托人說話。
2. I made all these troubles in your behalf.
   我是為了你才找這么多麻煩的。
3. I intervened on her behalf to try to get the decision changed.
   我為她力爭(zhēng)，以求改變決定。
4. He agreed to testify on behalf of the accused man.
   他同意為被告作證。
5. I put up the proposal on your behalf.
   我是為你的利益才提出這個(gè)建議的。
6. On behalf of my colleagues and myself I thank you.
   我代表我的同事和我本人向你表示感謝。

be.half

n.（名詞）
Interest, support, or benefit.
利益、支持或好處

<習(xí)慣用語>in behalf of
For the benefit of; in the interest of.
為了…；為了…利益
on behalf of
As the agent of; on the part of.
作為…的代理；在…一邊
來源：
Middle English
中古英語
from Old English be healfe [by (his) side]
源自 古英語 be healfe [接近，旁邊]
be [by, at] * see by
be [在（他）一邊] *參見 by
healf [side, half] * see half
healf [在…前，在…一旁] *參見 half

Traditionally,in behalf of and on behalf of have distinct senses. In behalf of means .for the benefit of,. as inWe raised money in behalf of the earthquake victims. On behalf of means .as the agent of; on the part of,. as inThe guardian signed the contract on behalf of the minor child. The two senses are quite close, however,and are often confused, even by reputable writers.
傳統(tǒng)上in behalf of 和 on behalf of 有著不同的意思。 In behalf of 意為.為了…的利益.， 如我們?yōu)榈卣鹗転?zāi)者籌款。 On behalf of表示.作為…的代理人；代表….， 如監(jiān)護(hù)人代表那個(gè)小孩簽了合同。 但這兩種意思相當(dāng)接近，因此經(jīng)常被弄混，連一些名作家也時(shí)?；煊?/br>