Question

Change voice- you should switch off all the electrical equipments when you go out.

Answer 1

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★Voice:- Voice is a term which describes the relationship between the action done and the recipient who did that particular action.

★Active Voice -When the subject is the doer of the action, then the verb is said to be in active voice .

★Passive Voice :- When the subject is being acted upon by an action , then the verb is known to be in passive voice.

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◆Some Rules for Changing AV TO PV (passive voice) AND PV TO AV. (Active Voice )

★While Changing AV TO PV the sub in the AV becomes the object in PV.

★While Changing AV TO PV third form of the main been is always used.

★'By' is used in PV Before the object.

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Structure of AV 

★Subject + Verb + Obj

Example :- Ram Has Killed a snake.

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★ Structure of PV

★ Object + verb + By +sub

Example :- A snake has been killed by Ram.

Now,

AV:-$\bf{You\:should\: switch\:off\:all\:the \:equipments\:when \:you\:go\:out}$

PV. :-$\bf{when\:you\:go\:out\:all\:the\:electrical\\ equipments\:should\:be \:switched off\:by \:you}$

Here, 

• In AV 'I' is the sub which become obj in the PV 'me'.

• verb in the AV 'has killed ' is used in its third form in PV 'has been killed'.

• by is used before object ! 

◇Structure :-

Obj + has/have + been + main verb + By + Sub 

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