Cách sử dụng
The expression "on behalf of somebody" means that you are doing something for someone else. For example, if your friend is sick and can't go to work, you might call their boss and say "I'm calling on behalf of my friend, who is unable to come to work today." This means that you are calling to let the boss know that your friend won't be at work, but you are doing it because your friend is unable to do it themselves. The expression can be used in many situations where you are acting for someone else, such as in legal matters, business deals, or personal matters.