Conditionals (0, 1, 2, 3)
Conditional 0 :
If + Present tense , Present tense
If you freeze water , it turns into ice.
Si congelas agua, se convierte en hielo
Conditional 1 :
If + Present tense , will / can / may / must + verb
If it rains today , I'll stay at home
Si llueve hoy , me quedaré en casa
Conditional 2 :
If + Past Simple , would / could / might + verb
If I didn't want to go , I would tell you
Si no quisiera ir , te lo diria
Conditional 3 : would/might/
If + Past Perfect tense , could + have + past participle
If I had known the answer , I would have raised my hand.
Si hubiese sabido la respuesta , habría levantado mi man
past perfect : had