How to use the conditional?

ZERO CONDITIONAL

1) If / when + present simple --- present simple / imperative
If you don’t eat food, you die

2) present simple / imperative --- If / when + present simple
Run when I say go

USO:

- Se utilita parar referirse a una situación que es verdadera.
If I spend too long watching TV, I get a headache.

- Se utiliza para dar órdenes, en este caso el verbo es imperativo.
If you see rubbish, pick t up!

FIRST CONDITIONAL

1) If / unless + present simple --- will + infinitive
If we recycle more, we will have a cleaner environment.

2) Will + infinitive --- if / unless + present simple
We will have a cleaner environment if we recycle more.

USO:

- Se utiliza para hablar sobre posibles futuros inminentes
She will see David if she goes to the party.

- Se utiliza para hacer promesas
If you pass all your exams, I will take you on holiday.

SECOND CONDITIONAL

1) If + past simple --- would + infinitive
If I were rich and famous, I would give money to charity organizations.

2) Would + infinitive --- if + past simple
I would give money to charity organizations if I were rich and famous.

USO:

- Lo utilizamos para hablar sobre situaciones improbables del presente y futuro.
If I had a car, I did travel around the world.