I do apologize for the inconvenience I brought to you last night.(对于昨晚带给你的不便，我感到非常的惭愧。)
I've got to say sorry for what I said rudely just now.(我很抱歉刚才对你说的那些无礼的话。)
I'm awfully sorry about the delay.(对这次耽误，我感到非常的抱歉。)
It was me to blame.(这是我的错。)
I do beg your pardon.(求你原谅我。)
I am sorry to bump into you. (对不起，撞着您了。)
I'm afraid I've taken you up too much for your time.(花您那么多时间，实在对不起。)
It was all my fault to have done...(这都是我的错……)
We really didn't mean that at all.(我们真的没有那样的意思。)
Please forgive me for...(请原谅……)
That's all right, don't think any more about it.(没什么大不了的，别想的太多。)
It's nothing serious. You don't have to upset yourself. (没有那么严重，不必太自责。)
It's not as bad as that. There is no point to getting upset.(没那么糟，不要为此而不安。)
That's okay.Don't let it bother you.(没事，别想的太多了。)
A: It's so careless of me to have lost your book...
B: Oh, that's doesn't matter. Because, you know, that's just the one I borrowed from your father...
A: I'm terribly sorry for breaking into your room, but...
B: Ok, what's your problem?
A: Someone's chasing me behind, and, and I need your help...