I’m sorry.

对不起。

I’m terribly sorry.

非常抱歉。

I’m sorry, I didn’t do it on purpose.

对不起，我不是故意的。

I didn’t mean it, please forgive me.

我不是故意的，请原谅。

Sorry, I was wrong.

对不起，我错了。

Sorry, please forgive me.

对不起，一定要原谅我。

Can you forgive me? Please give me a second chance.

可以原谅我吗？给我个机会吧。

Sorry, you misunderstood what happened today. I hope you can give me a chance to explain.

抱歉，今天的事情让你误会了，希望能给我个机会解释下。

Sorry, I did not realize it would cause you any problems, please forgive me.

对不起，没想到会给你带来不便，请原谅。

I apologize for the things I said earlier, please don’t take offense.

我对我今天说的话表示歉意，请不要跟我一般见识了。