I beg your pardon.

请原谅我

Pardon/Excuse me, please.

请原谅我。

Please forgive me/my son.

请原谅我儿子

Please forgive me for forgetting your name/breaking the promise.

请原谅我，忘记了你的名字/没能遵守诺言。

forgive sb for doing sth.

原谅某人做某事

Please forgive him for my sake.

看在我面子上就原谅他吧。

for one's sake

看在某人的面子上

Please accept my apologies.

请接受我的道歉。

Can you forgive me?

你能原谅我吗？

Give me a break.

饶了我吧。

Dialogue1:

A: Excuse me, I didn't mean to step on your foot.

对不起，我不是故意踩你的脚的。

B: No problem, you're pretty light.

没关系，你踩得很轻。

Dialogue2:

A: Can you forgive me?

你能原谅我吗？

B: I don't know, it's going to take some time.

我不知道，那得花点儿时间。

Dialogue3:

A: Give me a break, it's not like I did it on purpose,

饶了我吧，我不是故意那么做的。

B: No. That's what you always say, then you just go ahead and do it again.

不行，你总是这么说。然后你还会再做。

Dialogue4:

A: Please forgive my son for not finishing his homework. He's been very sick.

原谅我儿子没能完成作业，他病得挺严重的。

B: That's OK. Just have him turn it in by next week.

没关系，让他在下周前交上就可以了。