Making apologies:
I do apologize for...
I must apologize for...
I apologize for...
I'd like to apologize for...
I apologize for...
I'd like to apologize for...
I am so sorry for...
I shouldn't have...
It's all my fault.
I'm ashamed of...
Please, forgive me for...
Excuse me for ...
I'm terribly sorry for...
Please, forgive me for my...
Please, accept my apologies for...
I shouldn't have...
It's all my fault.
I'm ashamed of...
Please, forgive me for...
Excuse me for ...
I'm terribly sorry for...
Please, forgive me for my...
Please, accept my apologies for...
Accepting apologies:
That's all right.
Never mind.
Don't apologize.
It doesn't matter.
Don't worry about it.
Don't mention it.
That's OK.
I quite understand.
You couldn't help it.
Forget about it.
Don't worry about it.
No harm is done.
Never mind.
Don't apologize.
It doesn't matter.
Don't worry about it.
Don't mention it.
That's OK.
I quite understand.
You couldn't help it.
Forget about it.
Don't worry about it.
No harm is done.
Examples:
A: I hope you’ll forgive me for being late. I had a flat tire.
B: That’s quite all right/ I understand completely. It can happen to anyone.
A: Please accept my apologies for the mistakes in the report. I forgot to check it.
B: You don’t need/have to apologize. But next time, try to concentrate better.
A: I (would like to) apologize for shouting at you yesterday. I lost control of myself.
B: don’t worry about it. I just hope you’ll keep your temper from now on.
A: excuse me! I didn’t realize this was your seat/newspaper/…
B: That’s OK. I’m leaving anyway/I’ve finished reading it/…
A: I’m sorry. I didn’t mean to keep your book so long.
B: No problem/No big thing. I won’t need it until next semester.