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It’s important for everyone to learn how to apologize effectively. You might think a simple “I’m sorry” will take care of everything.   There are some situations in which you need to apologize properly.
Apologize truely.
Apologizing through a half-hearted “Sorry” will get you nowhere.   If you really want to apologize, you must do it truely. Accept the fact that you were in the wrong.   
Contrary to what you might think, apologizing over and over again isn’t going to help, especially if you’re apologizing to someone who’s your boss.
Don’t wait too long to apologize.
One piece of advice on how to apologize effectively is to do it as soon as you realize your mistake. Some people put off giving an apology because they think it will save them from the offended (被冒犯的) person’s anger. However, that is just not polite. If you can’ t approach the person personally at once, send him or her a message first.  
Don’t expect too much.
You can’t expect that person to forgive you immediately. If you’re going to apologize, you have to be prepared for the worst. The conversation isn’t going to be the most comfortable one either.  
Learning how to apologize effectively is very important. It shows people that you are a very kind person.

A．Don’t apologize again and again.

B．However, that’s not exactly true.

C．Pay a visit to others ahead of time.

D．You’d better prepare yourself for anything.

E. But make sure you make an apology in person as well.
F. In fact, it might get you into even bigger trouble than before.
G. A lot of people don’t know how to make an apology to their boss.