Voices with Modal Operators

Remember all the auxiliaries are called operators and modal operators are different from the operators they have following differences.

  • Since operators are verbs and they have their forms.
  • Modal operators have either past or no form at all.


First form 2nd form 3rd form 4th form –ing Base form 3rd person singular
Do Did Done Doing To do does
Have Had Had Having To have Has
Is Was Been Being To be  
Am Was Been Being To be  

Modal operators

First form 2nd form
May Might
Can Could
Will Would

How to convert the sentence with modal operator is very simple. All the rules of simple voices are applied, and in the place of auxiliary you have only to add be with the modal operators.

  1. Convert Subject into Object
  2. Convert Object into Subject
  3. Use 3rd form
  4. Use by with Objects


Just use be with the auxiliaries and make passive voice.

  • You must understand the situation. (active voice)
    The situation must be understood by you. (passive voice)
  • He can take drink. (active voice)
    Drink can be taken by you. (passive voice)
  • He will read this book. (active voice)
    This book will be read by him. (passive voice)
  • You must go through the test. (active voice)
    The test must be gone through by you. (passive voice)