I’m sorry that I didn’t get back to you sooner.
I didn’t realise…
Don’t worry about it…
Never mind
I’m really sorry. I’m afraid…
It doesn’t matter.
I’m sorry about…
I shouldn’t have ….
I can’t believe…
I didn’t mean to …
Forget about it…
I’m sorry for …
I thought…for some reason
Oh, that’s alright.
I had no idea…
No need to apologise.
After “I’m sorry that” we use a clause or a sentence.
After “I’m sorry about” we usually use a noun
After “I’m sorry for” we usually use Verb+ing
