I'm awfully¹ sorry.

很对不起。

I'm sorry to trouble you.

对不起，要麻烦你一下。

I'm sorry to have been so foolish.

我竟笨到这样的程度，真对不起。

I'm awfully sorry this has occurred.

竟发生了这样的事，真对不起。

Forgive my interrupting you, please.

打扰你了，请原谅。

I'd like to apologize.

我想向你道歉。

I can't tell you how sorry I am for it.

我为此感到极为遗憾。

Excuse me for a minute.

对不起，失陪一下。

I'm sorry, I don't remember your name.

对不起，我想不起您的大名。

I'm sorry, I don't mean to hurt you.

很抱歉，我没有伤害你的意思。

I'm sorry it was entirely² my fault.

很抱歉，这全是我的错。

Excues me for my carelessness.

请原谅我的粗心。

May I offer you my sincerest apologies?

请接受我诚挚的歉意。