Explaining the Estructures!!

Zero conditional: If+Simple Present+Simple Present.

Ex: If I go to Osorno, I need to buy the ticket.

First Conditional: If+Present Simple+Will/Won't.

Ex: If you don't sleep now, you will have problems tomorrow with wake up early.

Second Conditional: If+Past Simple+Would.

Ex: If I ate a lot, I would gain weight.

Third Conditional: If+Past Perfect+Would (d'have)+Past Participle.

Ex: If Nathy had stydied her lesson, she would have had a good grade.