The passive voice is less unusual than the active voice. But sometimes we want to put the object first or perhaps we don't want to s...
The passive voice is less unusual than the active voice. But sometimes we want to put the object first or perhaps we don't want to say who did something. In this case, we can use the passive which puts the object first.
Two cups of tea were drunk.
He was arrested.
We make the passive by putting the verb "to be" into whatever tense we need and then adding the past participle.