When Madonna's new record comes out, I won't buy it.
If President Kennedy hadn't gone to Dallas, he wouldn't have been shot.
If you heat water to 100C, it boils.
If I didn't like sport, I wouldn't watch TV sports channel.
The Beatles wouldn't have existed, if Lennon and McCartney hadn't met.
If it isn't cold, I don't wear boots.
If Karl Marx and Chairman Mao had met, they would have had an interesting conversation.
If it usually snowed in June in Europe, I could go skiing there then.