Conditional sentences (by Verónica Marcilla)

Zero conditional

If you heat water at 100ºC, it boils

Snakes bite if they are scared

Second conditional

If I were you, I would go to the doctor

If you studied harder, you would pass

First conditional

If you study hard, you will pass

If you go to the supermarket, buy some tomatoes

Third conditional

If I had known, I would have told you

If you had studied harder, you would have passed