When, while and as

Última actualización: 19 de enero de 2026

Uso de When, While y As

Conectores de Tiempo

When, While & As

1 Acciones Simultáneas (Largas vs. Cortas)

Introducen una acción más larga interrumpida por otra.

  • As I was sleeping, the door bell rang.
  • While you were studying, your friend called you.
Nota: Se prefiere el tiempo continuo, pero «as» y «while» admiten pasado simple con verbos de estado:
As I was at home, the postman came.

Orden Inverso

La frase principal puede cambiar de lugar:

  • The doorbell rang as I was sleeping.
  • Your friend called you while you were studying.

2 Dos Acciones Simultáneas (Paralelas)

Preferimos While para dos acciones que ocurren juntas durante el mismo periodo.

Pasado Continuo

While I was taking a shower, my mother was cleaning the attic.

Pasado Simple

While I took a shower, my mother cleaned the attic.

Cambios simultáneos (As)

Cosas que evolucionan o cambian juntas en el tiempo:

As you eat more, you will gain more weight.

As you study more, you will get better grades.

Fases de la vida (When)

Momentos específicos de crecimiento o edad:

When you were a kid, you used to be so shy.

Evitar: «While/As you were a kid».

Eventos Consecutivos (As)

Acciones inmediatas o que ocurren casi al mismo tiempo:

  • As he opened the drawer, he took out an old photo.
  • Just as my father came in, the phone rang.

Reducciones

Se pueden omitir sujetos y verbos con When y While:

  • Take a map when going camping.
  • Tell me when ready.
  • While a student, I used to live with my family.
Resumen Gramatical: Conectores Temporales en Inglés
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