Resultados posibles:
estabas celebrando
-you were celebrating
Imperfecto progresivo para el sujetodel verbocelebrar.
estabas celebrando
-you were celebrating
Imperfecto progresivo para el sujetovosdel verbocelebrar.

celebrar

Escuché que estabas celebrando una fiesta.
I heard you were having a party.
Parece que tú ya estabas celebrando.
Looks like you've already been celebrating.
Palabra del día
asustar