Zero Conditional
Facts and general truths; always true. IF+present simple + Presente Simple. Example: If you heat water to 100C, it boils.
Firts Conditional
Talk about a possible present or future or future situation and its result. IF + present simple + will (modal verb).
Example:
- If it rains, I will stay home.
- If she studies hard, She will pass the exam.
- If you feel sick, you should go to the doctor.
- If I finish work early, I might go to the gym.
Second Conditional
are used to talk about hypothetical or improbable situations in the present or future. We use the past tense (simple or continuos) in the if-clause and would (or could/might) + infinite in the other clause.
IF + Past Simple + Would + Verb
- If She were taller, she would play basketball
- If we didn’t have work tomorrow, we would stay up late tonight.
- If I spoke French, I could talk to them.
- If it stopped raining, we might go for a walk.
we can use were instead of was after I/He/She/It in the if-clause and we always use were in the expression if I were you
Third Conditional
are used to talk about a hypothetical situation in the past. Unreal situations in the past: regrets. We use the past perfect (simple or continuos) in the if-clause and would have (or could / might have) + part participle int the other clause. If-Clause (condición imposible) + Main Clause (Resultado Imposible).
IF + Past perfect + would have (or could / might have) + past participle.
Alternatives to IF
Mixed 1 Conditional
To show how a past action affects the present
IF + Past Perfect + Would + verb
Se utiliza para decir que una acción o situación que no ocurrió en el pasado tiene un resultado visible en el presente.
Ex
- If he had taken the job,he would be rich now.
- If you hadn’t stayed up late, you wouldn’t be so tired.
Mixed 2 Conditional
To show how a present situation affects past outcome
IF+Past Simple + Would have + Past Participle
Este condicional mixto conecta una condición permanente en el presente con un resultado en el pasado.
Ex.
If I were good with numbers, I would have chosen to study engineering.
If she spoke Spanish,she would have understood the announcement.