En B2 es clave controlar los 4 condicionales básicos y ver cómo cambiar de Zero → First → Second → Third cambia el significado (real, probable, irreal, pasado alternativo).
1) Mapa rápido de los 4 condicionales
Zero: If you heat water to 100°C, it boils. (siempre verdad)
First: If it rains, we’ll stay at home. (posible futuro)
Second: If I had more time, I would learn Chinese. (irreal ahora)
Third: If I had studied, I would have passed. (irreal en el pasado)
La estructura te dice el tipo de situación: regla general, plan real, fantasía presente o arrepentimiento pasado.
Pregunta clave: “¿Hablo de regla general, futuro real, presente irreal o pasado irreal?”
2) Tabla-resumen: forma, tiempo y uso
| Tipo | Estructura | Tiempo | Uso principal | Ejemplo |
|---|---|---|---|---|
| Zero | If + Present, Present | Presente | Hechos generales, rutinas, verdades | If you mix red and blue, you get purple. (siempre ocurre así) |
| First | If + Present, will + base | Presente → Futuro | Situaciones reales/posibles | If I have time later, I’ll call you. (posible plan) |
| Second | If + Past, would + base | Presente irreal | Hipótesis / fantasías / consejos | If I were rich, I would travel the world. (pero no soy rico) |
| Third | If + Past Perfect, would have + V3 | Pasado irreal | Arrepentimiento / crítica / “ya no se puede cambiar” | If we had left earlier, we would have caught the bus. (no salimos, no lo cogimos) |
3) Un mismo contexto con 4 condicionales
Fíjate cómo cambia el significado al cambiar el tipo de condicional.
A) “Lluvia y planes”
Zero:
If it rains, the streets get flooded.
➜ Hecho general (suele pasar siempre que llueve).
First:
If it rains this afternoon, we’ll stay at home.
➜ Plan real para hoy; puede que llueva o no.
Second:
If it rained more in this region, we would have more water.
➜ Fantasía sobre la situación actual (pero no llueve mucho).
Third:
If it had rained yesterday, we would have stayed at home.
➜ Miramos un pasado alternativo; en realidad no llovió.
B) “Dinero y viajes”
First: If I get a bonus, I’ll travel to Japan.
➜ Posible futuro (depende del bonus).
Second: If I had more money, I would travel more.
➜ Imaginación sobre el presente (pero ahora no tengo).
Third: If I had saved more money, I would have travelled more last year.
➜ Arrepentimiento sobre el pasado (ya pasó).
Cambiar el tipo de condicional es como mover una escena en el tiempo: general → futuro real → presente irreal → pasado irreal.
4) Cómo elegir el condicional correcto (guía rápida)
- Zero: ¿Hablas de algo que siempre ocurre, una regla o hábito?
→ If + Present, Present
If I drink coffee at night, I can’t sleep. - First: ¿Hablas de un futuro posible o un plan real? (“si pasa X, haré Y”)
→ If + Present, will + base
If I finish early, I’ll go to the gym. - Second: ¿Hablas de algo que no es verdad ahora (fantasía, deseo, consejo)?
→ If + Past, would + base
If I were you, I would change jobs. - Third: ¿Hablas de un pasado que no ocurrió y un resultado diferente?
→ If + Past Perfect, would have + V3
If we had left earlier, we would have arrived on time.
Atajo mental:
• Palabras como always, usually, when → Zero.
• Palabras como tonight, tomorrow, later → First (normalmente).
• Palabras como now, these days, in my life + fantasía → Second.
• Palabras como yesterday, last year, in 2010 + arrepentimiento → Third.
5) Errores típicos al mezclar condicionales
| Incorrecto | Correcto | Tipo / problema |
|---|---|---|
| *If it will rain, we’ll stay at home.* | If it rains, we’ll stay at home. | First: en la parte de if no se usa will. |
| *If I would have more time, I would travel more.* | If I had more time, I would travel more. | Second: solo un would en la cláusula principal. |
| *If I had study more, I would have passed.* | If I had studied more, I would have passed. | Third: Past Perfect → had + V3, no forma base. |
| *If I know the answer, I would tell you.* | If I knew the answer, I would tell you. (Second) If I know the answer, I’ll tell you. (First) | No mezcles “presente real” con “would” irreal. |
| *If you would tell me, I’ll help you.* | If you tell me, I’ll help you. (First) If you told me, I would help you. (Second) | Evita “if + would” en estos condicionales básicos. |
Truco: decide primero el tipo, y luego aplica su estructura completa. No mezcles partes de diferentes condicionales en la misma oración.
6) Mini-práctica: elige el condicional correcto
- Indica qué tipo de condicional es cada oración (Zero / First / Second / Third):
a) If you heat ice, it melts.
b) If it rains tomorrow, we’ll cancel the picnic.
c) If I knew his number, I would call him.
d) If they had invited me, I would have gone.
e) If you don’t water plants, they die. - Completa con la forma correcta del verbo y el tipo de condicional:
a) If I ______ (get) the job, I ______ (move) to London. (futuro posible)
b) If I ______ (be) you, I ______ (not/accept) that offer. (consejo irreal)
c) If they ______ (study) more, they ______ (pass) the exam. (pasado irreal)
d) If you ______ (press) this button, the machine ______ (start). (hecho general)
e) If she ______ (not/forget) her keys, she ______ (not/be) late. (pasado irreal) - Reescribe usando el condicional indicado entre paréntesis:
a) I don’t have a car, so I take the bus. (Second → irreal presente)
b) I usually drink coffee, and then I can’t sleep. (Zero)
c) Maybe it will rain later, so I’ll stay at home. (First)
d) I didn’t see the message, so I didn’t reply. (Third)
e) When I eat too much sugar, I get a headache. (Zero) - Corrige si es necesario y di qué tipo de condicional debería ser:
a) If I will finish early, I’ll call you.
b) If I had more time, I will learn Italian.
c) If she had told me, I would go to the party.
d) If it rains, the streets will get flooded always.
e) If they would have called me, I would have answered. - (Producción guiada) Escribe 4 oraciones, una de cada tipo, sobre tu vida:
• Zero: una verdad general sobre ti (If I…, I…).
• First: un plan real para esta semana (If I…, I’ll…).
• Second: una fantasía o deseo (If I…, I would…).
• Third: un arrepentimiento del pasado (If I had…, I would have…).
Intenta que sean ejemplos que realmente tengan sentido para tu vida.
Respuestas ejemplo (orientativas):
1) a) Zero · b) First · c) Second · d) Third · e) Zero.
2) a) get / will move (First)
b) were / wouldn’t accept (Second)
c) had studied / would have passed (Third)
d) press / starts (Zero)
e) hadn’t forgotten / wouldn’t have been (Third)
3) a) If I had a car, I would take the bus less / I wouldn’t take the bus. (Second)
b) If I drink coffee, I can’t sleep. (Zero)
c) If it rains later, I’ll stay at home. (First)
d) If I had seen the message, I would have replied. (Third)
e) If I eat too much sugar, I get a headache. (Zero)
4) a) If I finish early, I’ll call you. (First)
b) If I had more time, I would learn Italian. (Second)
c) If she had told me, I would have gone to the party. (Third)
d) If it rains, the streets get flooded. (Zero) / “always” fuera de la if-clause.
e) If they had called me, I would have answered. (Third)
5) Respuesta libre; revisa que cada oración respete la estructura de su tipo.
7) Próximo paso
Continúa con Relative clauses no definidas + reduced relatives, donde aprenderás a usar oraciones de relativo para añadir información extra (who/which/that) y a reducirlas para sonar más natural y avanzado.