Conditionals 2 & 3
He's married so he has a wife. (If ... )
If he didn't have a wife, he wouldn't be married.
He eats a lot of cakes so the buttons on his pants pop off. (If he ... )
If he didn't eat a lot of cakes, the buttons on his pants wouldn't pop off.
You never leave banana skins on the floor, so you don't slip on them. (If you ...)
If you LEFT banana skins on the floor, you WOULD slip on them.