Passive Voice

Passive Voice

S          V        O Active : (a) Mary helped the boy	Form of passive : be + past participle
S                    V Passive : (b) The boy was helped by Mary	In the passive, the object of verb becomes the subject of the passive verb : “the boy” in (a) becomes the subject of the passive verb in (b). (a) and (b) have the same meaning.

TENSES	ACTIVE	PASSIVE
simple present	Tom opens the door	The door is opened by Tom
present progessive	Tom is opening the door	The door is being opened by Tom
present perfect	Tom has opened the door	The door has been opened by Tom
simple past	Tom opened the door	The door was opened by Tom
past progessive	Tom was opening the door	The door was being opened by Tom
past perfect	Tom had opened the door	The door had been opened by Tom
simple future	Tom will open the door	The door will be opened by Tom
be going to	Tom is going to open the door	The door is going to be opened by Tom
future perfect	Tom will have opened the door	The door will have been opened by Tom