Passive Voice with Modals

Passive voice with Modals

“CAN, MAY, MIGHT, SHOULD, MUST, OUGHT TO”

Formulas:-

Active voice: Subject + modal verbs + first form of the verb + object

Passive Voice: Object + modal verbs + be + 3rd form of the verb + subject

Passive voice for Present/Future Modals verbs “CAN, MAY, MIGHT, SHOULD, MUST, OUGHT TO”
Active voice: CAN She can play a guitar. She cannot/can't play a guitar. Can she play a guitar?	Passive voice: CAN + BE A guitar can be played by her. A guitar can't be played by her. Can a guitar be played by her?
Active voice: MAY I may buy a mobile phone. I may not/mayn't buy a mobile phone.	Passive voice: MAY + BE A mobile phone may be bought by me. A mobile phone mayn't be bought by me.
Active voice: MIGHT  They might play chess. They might not play chess.	Passive voice: MIGHT + BE Chess might be played by them. Chess mightn't be played by them.
Active voice: SHOULD You should study all lessons. You should not/ shouldn't study all lessons. Should you study all lessons?	Passive voice: SHOULD + BE All lessons should be studied by you. All lessons shouldn't be studied by you. Should all lessons be studied by you?
Active voice: MUST We must obey our parents. We must not/ mustn't obey our parents.	Passive voice: MUST + BE Parents must be obeyed by us. Parents mustn't be obeyed by us.
Active voice: OUGHT TO They ought to take the precautions.	Passive voice: OUGHT TO + BE The precautions ought to be taken by them.

Passive voice for Past Modals
“MAY HAVE, MIGHT HAVE, SHOULD HAVE, MUST HAVE, OUGHT TO HAVE”

Formulas:-

Active voice: Subject + modal verbs +have + first form of the verb + object

Passive Voice: Object + modal verbs + have + been + 3rd form of the verb + subject

Passive voice for Past Modals   “MAY HAVE, MIGHT HAVE, SHOULD HAVE, MUST HAVE, OUGHT HAVE TO”
Active voice: MAY HAVE You may have operated the computer. You mayn't have operated the computer.	Passive voice: MAY HAVE BEEN The computer may have been operated by you. The computer mayn't have been operated by you.
Active voice: MIGHT HAVE He might have watched movie. He mightn't have watched movie.	Passive voice: MIGHT HAVE BEEN The movie might have been watched by him. The movie mightn't have been watched by him.
Active voice: SHOULD HAVE You should have phoned him. You shouldn't have phoned him.	Passive voice: SHOULD HAVE BEEN He should have been phoned by you. He should haven't been phoned by you.
Active voice: MUST HAVE He must have attended the workshop. He mustn't have attended the workshop.	Passive voice: MUST HAVE BEEN The workshop must have been attended by him. The workshop mustn't have been attended by him.
Active voice: OUGHT TO HAVE You ought to have arranged money.	Active voice: OUGHT TO HAVE BEEN The money ought to have been arranged by you.

http://www.studyandexam.com/passive-voice-for-modal.html