Grammar
Past pasive

Weather "Past" passive voice answers the question: "What was done?" = What did / did? or "What was being done?" = What was / were doing?
Example

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• Sally's legs were hurt in an accident.
  Las piernas de Sally fueron lastimadas en un accidente
• It is believed that a battle was fought here 400 years ago.
  Se cree que aquí se peleó una batalla hace 400 años.
• Our dog was not allowed to travel with us.
  A nuestro perro no se le permitió viajar con nosotros.
• You were not called yesterday.
  A usted no le llamaron ayer.
• Was the Tower of London used as a prison in former times?
  ¿Fue usada la Torre de Londres como una prisión en tiempos anteriores?
• Was he thought to have a gift for music?
  ¿Se pensó que él tenía un talento para la música?
• Paul was given three hours to make a decision.
  Le dieron a Paul tres horas para tomar una decisión.
• My neighbors were paid to take care of Pam's cat.
  Les pagaron a mis vecinos para que cuidaran del gato de Pam.

What was being done? - ¿Qué se estaba haciendo?

A house was being built.
Se estaba construyendo una casa / Una casa estaba siendo construida

• 
  
• The car was being washed when it began to drizzle.
  El coche estaba siendo lavado cuando comenzó a lloviznar.
• The girl was being chased by a dog when she fell down.
  La muchacha estaba siendo perseguida por un perro cuando ella se cayó.