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§ 1 General information

Voice is the form of the verb which shows whether the subject of the sentence is the doer of the action expressed by the verb or whether it was acted upon.

There are two voices in English – the Active Voice and the Passive Voice.

The Active Voice shows that the person or thing denoted by the subject of the sentence is the agent (the doer) of the action expressed by the predicate verb: Someone stole the jewels.

The Passive Voice shows that the subject of a sentence is not the agent (doer) of the action but the receiver of it: The jewels were stolen.

1. F o r m a t i o n

The Passive Voice is formed by using the appropriate tense of the verb to be + past participle.

1) The Rules of Changing from Active into Passive

  1. The object of the active verb becomes the subject in the new sentence.

  2. The active verb changes into a passive form and the subject of the active verb becomes the agent.

  3. The agent is introduced with by or it is omitted.

  • Only transitive verbs can be changed into the passive.

Subject

Verb

Object

Agent

Active

Bell

invented

the telephone

Passive

The telephone

was invented

by Bell

Active

The doctor

has examined

the patient

Passive

The patient

has been examined

by the doctor

2) Active Tenses and their Passive Equivalents Affirmative Form

Tense

Active Voice

Passive Voice

Present Indefinite

They repair cars

Cars are repaired

Past Indefinite

They repaired the car

The car was repaired

Future Indefinite

They will repair the car

The car will be repaired

Present Continuous

They are repairing the car

The car is being repaired

Past Continuous

They were repairing the car

The car was being repaired

Present Perfect

They have repaired the car

The car has been repaired

Past Perfect

They had repaired the car

The car had been repaired

Future Perfect

They will have repaired the car

The car will have been repaired

modals (modal+be+p.p.)

They may repair the car

The car may be repaired

Infinitive

They have to repair the car

The car has to be repaired