2. WHEN DO WE USE THE PASSIVE VOICE?
When the actor in the situation is not
important:
The aurora borealis can be observed in the early
morning hours.
When the focus is on the action.
My bicycle was stolen.
Use “by+agent” when you want to say who
did the action:
The tin can was crushed by the gorilla.
4. More Tenses
Tense Subject Auxiliary Past
ParticipleSingular Plural
Present simple The car/cars is are designed.
Present perfect The car/cars has been have been designed.
Past simple The car/cars was were designed.
Past perfect The car/cars had been had been designed.
Future The car/cars will be will be designed.
Present
continuous
The car/cars is being are being designed.
Past continuous The car/cars was being were being designed.