but · conjunction /bʌt/
but (DIFFERENT STATEMENT)
A1 used to introduce an added statement, usually something that is different from what you have said before
Dictionary examples:
You can invite Keith to the party, but please don't ask that friend of his.
She's very hard-working but not very imaginative.
She's not only a painter but also a writer.
I think it's true, but then, I'm no expert.
Learner example:
There are eight rooms but the best one is my bedroom, because there are a lot of books. (Key English Test; A2; Italian)
but (EXPLAINING WHY)
B1 used before you say why something did not happen or is not true
Dictionary example:
I was going to go to his party, but I was ill.
Learner example:
I'm really sorry I haven't written for so long, but I was very busy last week. (Preliminary English Test; B1; Italian)
but · preposition /bʌt/
but
B1 except
Dictionary examples:
Everyone but Andrew knows.
This car has been nothing but trouble - it's always breaking down!
Learner example:
I'm free all days of the week but Monday and Wednesday. (Key English Test; A2; Spanish)
