Explanation about conditionals

Zero conditional: if + simple present + simple present.
Example: If I eat a lot of chocolate, I feel sick.

First conditional: If + Simple present + will/won`t
Example: If I get sick, my mother will be nervous.

Second conditional: If + past simple + would.
Example: If I had a big house I would be happy.

Third conditional: If + past perfect + would have + past participle.
Example: If I had tried harder, I would have won the game.