what is the difference between
1. i am sorry to disturb
2. i am sorry to have disturbed
***** NOT A TEACHER *****
(1) Maybe ( I do not say that I am right):
Tom: Ms. Smith, may I enter your office?
Ms. Smith: Yes.
Tom: I am sorry to disturb you [now], ma'am, but I have some important
business matters.
Ms. Smith: Do sit down.
(Ms. Smith and Tom talk for 30 minutes.)
Tom (gets up from his chair): Ms. Smith, I am sorry to have disturbed
you [ 30 minutes ago], but this matter was very important.
Ms. Smith: You did not disturb me [30 minutes ago]. My door is always open
to employees who want to discuss business matters. Have a nice day.