And, Or & But * And And means also, added to: - Please speak slowly and clearly. - She plays piano and guitar. * Or Or is used to introduce another possibility: - Shall we go to the cinema or bar? - Are you interested or not? * But But is used to introduce something new that you say, especially something that is different or the opposite from what you have just said: - I want to go, but I have to work. - She didn't send me a birthday card, but she did phone me.