MODALS + HAVE

El tiempo "con Modals + have" de la voz pasiva responde a la pregunta: "What (must/could...) have been done?" = ¿Qué se (debe/podría...) haber hecho? o "What (must/could...) have been being done?" = ¿Qué se (debe/podría...) haber estado haciendo?

1. Present The car is washed The car is being washed	2. Present perfect The car has been washed The car has been being washed
3. Past The car was washed The car was being washed	4. Past perfect The car had been washed The car had been being washed
5. Future The car will be washed The car will be being washed	6. Future perfect The car will have been washed The car will have been being washed
7. Future (going to) The car is going to be washed The car is going to be being washed	8. Future perfect (going to) The car is going to have been washed The car is going to have been being washed
9. Future in past The car was going to be washed The car was going to be being washed	10. Future perfect in past The car was going to have been washed The car was going to have been being washed
11. Conditional The car would be washed The car would be being washed	12. Conditional perfect The car would have been washed The car would have been being washed
13. Modals The car (can, could, ...) be washed The car (can, could, ...) be being washed	14. Modals + have The car (can, could, ...) have been washed The car (can, ...) have been being washed

Tenses - Continuous Tenses

What (must/could...) have been done? - ¿Qué se (debe/podría...) haber hecho?

A house (must/could...) have been built.
Se (debe/podría...) haber construido una casa / Una casa (debe/podría...) haber sido construida

• The day had been hot and sunny. The garden should have been watered at twilight.
  El día había estado caluroso y soleado. El jardín debería haber sido regado al anochecer.
• Susan feels tired. She must have been working hard lately.
  Susan se siente cansada. Ella debe haber estado trabajando duro ultimamente.
• These shoes should not have been mended. They are too old.
  Estos zapatos no deberían haber sido reparados. Son demasiado viejos.
• Smokers should not have been allowed inside the restaurant.
  No deberían haber permitido a los fumadores entrar al restaurante.
• Should the candles have been lit in the evening?
  ¿Deberían las velas haber sido encendidas por la noche?
• That statue should have been shown in the art gallery.
  Esa estatua debería haber sido mostrada en la galería de arte.
• Johny was fired. I think he should have been given another opportunity.
  Johny fue despedido. Pienso que se le debería haber dado otra oportunidad.
• Diana's death could have been prevented.
  La muerte de Diana se podría haber evitada.
• The infection he had suffered might have been caused by the contaminated catheters.
  La infección que él había sufrido podría haber sido causada por los catéteres contaminados.
• Could the party have been organized somewhere else?.
  ¿Podría la fiesta haberse organizado en otra parte?