I'm sorry

I'm sorry or Sorry spoken

1) used for telling someone that you are ashamed or unhappy about something that you have done that has hurt or upset them

I'm sorry – I shouldn't have blamed you.

Sorry, I didn't mean to step on your foot.

2) used in a social situation as a way of asking someone to forgive you for doing something rude, embarrassing etc

Sorry, I should have phoned to let you know I'd be late.

I'm sorry about:

I'm sorry about the misunderstanding.

3) used for politely interrupting someone, especially to ask them a question

Sorry, do you know what time it is?

I'm sorry for:

I'm sorry for the intrusion, but you have a phone call.

4) used for politely asking someone to repeat something that they have said

I'm sorry, what was your name again?

5) used for interrupting yourself to correct a mistake that you have made while speaking

You need to catch the number 3, sorry, the number 23 bus to Market Street.

6) used for politely disagreeing with someone's opinion

I'm sorry but I don't see how you expect us to finish by lunchtime.