1. I'm terribly sorry.
我非常抱歉。

2. Sorry. It was all my fault.
对不起，都是我的错。

3. Please don't be mad at me.
求你了，别生我的气。

4. Please forgive me.
请原谅我吧！

5. I'm sorry. I didn't mean to offend you.
对不起，我不是故意要冒犯你。

6. How can I make it up to you?
我要怎样才能补偿你？

7. It's my fault. I really feel bad about it.
是我错了。我真的很抱歉。

8. I just don't know what to say.
我真不知道该说什么好。

9. I shouldn’t have done that.
我真不该那么做。