Mastering Passive Voice and Modal Verbs in English

The Passive Voice

The passive voice is used to focus on the action or the recipient of the action. Below are examples of how to transform sentences from active to passive across various tenses:

• Present Simple: He delivers the letters. / The letters are delivered.
• Past Simple: He delivered the letters. / The letters were delivered.
• Future Simple: He will deliver the letters. / The letters will be delivered.
• Present Continuous: He is delivering the letters. / The letters are being delivered.
• Past Continuous: He was delivering the letters. / The letters were being delivered.
• Going to: He is going to deliver the letters. / The letters are going to be delivered.
• Present Perfect: He has delivered the letters. / The letters have been delivered.
• Past Perfect: He had delivered the letters. / The letters had been delivered.
• Infinitive: He has to deliver the letters. / The letters have to be delivered.
• Modals: He must deliver the letters. / The letters must be delivered.

Additional Examples:

• He has been arrested.
• 30 people were killed in the earthquake.
• This book was written by Agatha Christie.

Modal Verbs

Modal verbs express possibility, certainty, or necessity. Here are examples of how to rewrite sentences using appropriate modal verbs:

1. It’s possible that Jane will visit Switzerland next year.
   Jane may/might/could visit Switzerland next year.
2. Perhaps she is taking Spanish lessons.
   She may/might/could be taking Spanish lessons.
3. I’m sure they’ll be home by now.
   They must be home by now.
4. James definitely isn’t eighteen yet!
   James can't be eighteen yet!
5. It’s possible the weather will be sunny tomorrow.
   The weather may/might/could be sunny tomorrow.
6. I’m sure that Mrs. Smith didn’t leave home.
   Mrs. Smith can't have left home.
7. Perhaps she’s gone to stay with her mother.
   She may/might/could have gone to stay with her mother.
8. It’s possible that Mr. Smith committed a crime.
   Mr. Smith may/might/could have committed a crime.
9. I’m certain that he buried something in the garden.
   He must have buried something in the garden.
10. Perhaps they are playing the match.
    They may/might/could be playing the match.
11. I’m sure he bought a new car.
    He must have bought a new car.
12. Perhaps Mr. Smith murdered his wife.
    Mr. Smith may/might/could have murdered his wife.
13. I'm sure she's at home.
    She must be at home.
14. I know that isn't Janet—she's in America.
    That can't be Janet. She’s in America.
15. I'm sure she thinks I'm stupid.
    She must think I'm stupid.
16. I bet I look silly in this coat.
    I must look silly in this coat.