If the weather is nice, we'll go for a walk.
If we paid more attention to grammar, we should know the language better.
I should not have been late yesterday, if my watch had been right.
If he were free, he would do it.
If I had worked harder at school, I would have a better job now .
We wouldn't be lost if we had looked at the map.
If I had won the lottery I would be rich.
If people were a little more tolerant ,our world would be a better place.
If you hadn't taken so long getting ready,we'd be there by now.
If you hadn't spent all your money on CDs you would buy this T-shirt.