Passive voice for Present/Future Modals
“CAN, MAY, MIGHT, SHOULD, MUST, OUGHT TO”

• The places of subject and object in sentence are inter-changed in passive voice.
• 3rd form of verb (past participle) will be used only (as main verb) in passive voice.
• To change sentences having present/future modal into passive voice, auxiliary verb “be” is added after modal in sentence.

Passive voice for Present/Future Modals  “CAN, MAY, MIGHT, SHOULD, MUST, OUGHT TO” Auxiliary verb in passive voice: be
Active voice: CAN She can play a violin. She cannot play a violin. Can she play a violin?	Passive voice: CAN BE A violin can be played by her. A violin cannot be played by her. Can a violin be played by her?
Active voice: MAY I may buy the computer. I may not buy the computer. May I buy the computer?	Active voice: MAY BE The computer may be bought by me. The computer may not be bought by me. May the computer be bought by me?
Active voice: MIGHT Guests might play chess. Guests might not play chess.	Active voice: MIGHT BE Chess might be played by guests. Chess might not be played guests.
Active voice: SHOULD Students should study all lessons. Students should not study all lessons. Should students study all lessons?	Active voice: SHOULD BE All lessons should be studied by students. All lessons should not be studied by students. Should all lessons be studied by students?
Active voice: MUST You must learn the test-taking strategies. You must not learn the test-taking strategies.	Active voice: MUST BE Test-taking strategies must be learnt by you. Test-taking strategies must not be learned by you.
Active voice: OUGHT TO They ought to take the examination.	Active voice: OUGHT TO BE The examination ought to be taken by them.

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

• The places of subject and object in sentence are inter-changed in passive voice.
• 3rd form of verb (past participle) will be used only (as main verb) in passive voice.
• To change sentences having past modal into passive voice, auxiliary verb “been” is added after modal in sentence.

Passive voice for Present/Future Modals  “MAY HAVE, MIGHT HAVE, SHOULD HAVE, MUST HAVE, OUGHT HAVE TO” Auxiliary verb in passive voice: been
Active voice: MAY HAVE You may have availed the opportunity. You may not have availed the opportunity.	Active voice: MAY HAVE BEEN The opportunity may have been availed by you. The opportunity may not have been availed by you.
Active voice: MIGHT HAVE He might have eaten meal. He might not have eaten meal.	Active voice: MIGHT HAVE BEEN Meal might have been eaten by him. Meal might not have been eaten by him.
Active voice: SHOULD HAVE You should have studied the book. You should not have studied the book.	Active voice: SHOULD HAVE BEEN The book should have been studied by you. The book should have not been studied by you.
Active voice: MUST HAVE He must have started job. He must not have started job.	Active voice: MUST HAVE BEEN Job must have been started by you. Job must not have been started by you.
Active voice: OUGHT TO HAVE You ought to have helped him.	Active voice: OUGHT TO HAVE BEEN He ought to have been helped by you