13/06/16 How to Use ‘OF COURSE’
A: Do you know how to use “of course”?
B: Of course!
We use of course to mean something like “as everybody knows” or “as is obvious”.
It looks as if the sun goes round the earth, but of course the earth really goes round the sun.
We’ll leave at eight. Granny won’t be coming, of course.
This means that “of course” is not a very polite reply to a statement of fact.
A: Could you help me?
B: Of course.
A: It’s cold.
B: It certainly is. (“Of course it is” would be quite rude, because it would suggest that the first speaker had said something too obvious to be worth mentioning.)