核心畫面
Someone is not in the room, so you stand in their place — your mouth, their message; your signature, their decision. The word never stands alone: it lives inside on behalf of somebody / on somebody's behalf, and what it marks is that the action really belongs to the person who is absent.
可以想成：某個人不在場，於是你站到他的位置上——你的嘴，講他的話；你的簽名，代他的決定。這個字不會單獨出現，永遠活在…更多收起
可以想成：某個人不在場，於是你站到他的位置上——你的嘴，講他的話；你的簽名，代他的決定。這個字不會單獨出現，永遠活在 on behalf of somebody 或 on somebody's behalf 這個結構裡，標記的是「這件事其實是那個人的」。從這裡再延伸一點，就變成「為了他的好處」。原始詞典資料2 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
behalfnoun/bɪˈhæf/
- 1
The interest, benefit, or wellbeing of someone or something.
- She appeared on behalf of the U.N. Secretary General at a conference held in behalf of the world's children.
- The one exception to this was William Hilhouse, who was widely regarded as the colonist with the greatest experience of the interior and its native inhabitants, on whose behalf he endlessly campaigned.
- 2
One's role or rightful place; stead or authority.
- He was not only my Representative who died on my behalf; He was my Substitute who died in my very stead.
- Which indeed is so true, that she herself may seek back for her own gain the dowry offered by another on her behalf, unless by chance he who offered it immediately (that is, at the time of offering or of promising) stipulated or made an agreement that the afore-mentioned dowry would be returned to him.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。