El past continuous describe una acción que estaba en curso en algún momento del pasado — ya había empezado y no había terminado todavía. Imagínalo como una foto tomada a mitad de una acción: At nine o'clock, she was studying. They were sleeping when I arrived.
La forma es sencilla: was o were + la forma en -ing del verbo principal.
Fórmula rápida: sujeto + was / were + verbo**-ing** → I was working. They were talking.
Cómo formar el past continuous
El auxiliar es siempre was o were — la misma elección que en el Past simple: was / were. Luego se añade la forma en -ing del verbo principal.
| Sujeto | Auxiliar | Forma en -ing | Ejemplo |
|---|---|---|---|
| I | was | working | I was working late. |
| he / she / it | was | reading | She was reading a book. |
| you | were | talking | You were talking loudly. |
| we / they | were | sleeping | They were sleeping. |
La regla para was / were es siempre la misma: I, he, she, it → was; you, we, they → were. También se aplica a sustantivos en función de sujeto — ✅ The baby was sleeping, ✅ The children were sleeping.
Ortografía de la forma en -ing
Son las mismas reglas que en el present continuous:
| Si el verbo termina en… | Regla | Ejemplo |
|---|---|---|
| la mayoría de los verbos | añadir -ing | work → working, play → playing |
| -e | eliminar la -e, añadir -ing | make → making, have → having |
| verbo monosílabo con patrón consonante–vocal–consonante | duplicar la consonante final (no w/x/y) | run → running, sit → sitting, fix → fixing |
| -ie | cambiar a -y, añadir -ing | lie → lying, die → dying |
Una acción en curso en un momento del pasado
El past continuous sirve para decir qué estaba pasando en un momento concreto del pasado. La expresión de tiempo señala un instante dentro de la acción:
- At ten o'clock last night, I was watching TV.
- This time yesterday, we were flying over the ocean.
- When you called, she was having a shower.
Acciones interrumpidas: past continuous + when + past simple
Este es uno de los usos más frecuentes. Una acción más larga (past continuous) estaba en curso cuando ocurrió un evento más breve (past simple). El evento puede interrumpir la acción o no — en I was cooking when the phone rang, quizá siguió cocinando:
- I was cooking dinner when the phone rang.
- She was walking home when it started to rain.
- We were watching the match when the power went out.
El past continuous pinta el fondo; el past simple marca el evento. Se puede invertir el orden de las dos partes: cuando la parte con when va primero, generalmente se añade una coma:
- When the phone rang, I was cooking dinner.
En español, la perífrasis estar + gerundio (estaba cocinando) suele corresponder al past continuous inglés: I was cooking when the phone rang equivale a estaba cocinando cuando sonó el teléfono. El inglés aplica esta distinción de forma más sistemática; en español, a veces se usa el imperfecto simple (cocinaba) con el mismo sentido.
Dos acciones simultáneas
Usa el past continuous en ambas partes para mostrar dos acciones que ocurren al mismo tiempo:
- While she was studying, he was cooking.
- They were talking while I was trying to sleep.
When y while
Estas dos palabras siguen patrones útiles:
- ✅ While I was sleeping, the cat came in. (while + acción de fondo)
- ✅ I was sleeping when the cat came in. (when + el evento que interrumpe)
- ✅ When she arrived, we were eating dinner. (when antes del past simple también es posible)
while señala duración y encaja naturalmente con el past continuous; when suele introducir el evento breve en past simple. En la práctica, ambas palabras aparecen delante de oraciones en past continuous — When I was cooking, the phone rang es perfectamente natural.
Forma negativa
Añade not después de was / were. Las formas contraídas son muy habituales:
- I wasn't listening. (was not)
- They weren't expecting you. (were not)
- It wasn't raining when I left.
Preguntas
Coloca was / were delante del sujeto:
- Was she sleeping?
- Were they waiting for us?
- What were you doing last night?
- Who was he talking to?
Las respuestas cortas repiten was o were:
- «Were you working?» — «Yes, I was.» / «No, I wasn't.»
Verbos que habitualmente no se usan en la forma continua
Algunos verbos describen estados en lugar de acciones — know, believe, love, want, understand. En su significado de estado, suelen ir en past simple, no en la forma continua:
- ❌ I was knowing the answer. → ✅ I knew the answer.
- ❌ She was wanting to leave. → ✅ She wanted to leave.
Algunos de estos verbos pueden usarse en la forma continua con un significado diferente, más activo (I was seeing a doctor, She was thinking about it), pero eso es para más adelante.
Errores frecuentes
- ❌ I was cook dinner. → ✅ I was cooking dinner. (falta la forma en -ing)
- ❌ I cooking when you called. → ✅ I was cooking when you called. (falta was / were)
- ❌ What was you doing? → ✅ What were you doing? (you siempre lleva were)
- ❌ While she reading, I was writing. → ✅ While she was reading, I was writing. (falta was / were antes de la forma en -ing)
- ❌ I was knowing the answer. → ✅ I knew the answer. (los verbos de estado no se usan en la forma continua)
Comprobación rápida
¿Past continuous o past simple?
- At midnight, they ____ (sleep).
- I ____ (have) a shower when you ____ (knock).
- While she ____ (read), he ____ (cook) dinner.
- ____ you ____ (listen) when the teacher explained it?
Ver respuestas
- were sleeping 2. was having … knocked 3. was reading … was cooking 4. Were … listening
Puntos clave
- El past continuous = was / were + verbo-ing — describe una acción en curso en el pasado.
- Se usa para: una acción en un momento concreto del pasado; una acción de fondo interrumpida por un evento en past simple; dos acciones simultáneas.
- while encaja naturalmente antes de una parte en past continuous; when suele introducir el evento breve en past simple.
- Negación: wasn't / weren't + -ing. Preguntas: Was / Were + sujeto + -ing?
- Los verbos de estado (know, want, love…) suelen ir en past simple en su sentido de estado, no en la forma continua.