The Verb And Forms

THE PASSIVE AND ACTIVE VOICES

Voice in English is that grammatical category that makes it possible to see an action in a sentence in two ways without a change in the facts reported. In the active voice, the subject is the doer of the action while the object is the receiver of the action for example:
John took the birds to the market.
With the passive voice more emphasis is laid on what is done or the action than on who does it (subject) for example:
The birds were taken to the market by John.
In this sentence, we are really not interested in who took the birds to the market but in the fact that the birds were taken to the market.