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Grammar Matrix

Active and Passive Voice Rules

Master transforming sentence voice with clear structural charts.

Active vs. Passive Voice Rules

In Active Voice, the subject performs the action. In Passive Voice, the subject receives the action (Object becomes Subject + Form of 'Be' + V3 Past Participle + by + Agent).

Tense Active Voice Formula Passive Voice Formula Example Conversion
Simple PresentSubject + V1 (s/es) + ObjectObject + is/am/are + V3 + byShe writes a letter → A letter is written by her.
Present Cont.Subject + is/am/are + V-ingObject + is/am/are + being + V3They are building a bridge → A bridge is being built by them.
Present PerfectSubject + has/have + V3Object + has/have been + V3He has completed the work → The work has been completed by him.
Simple PastSubject + V2 + ObjectObject + was/were + V3The dog bit the boy → The boy was bitten by the dog.
Past ContinuousSubject + was/were + V-ingObject + was/were + being + V3She was cooking dinner → Dinner was being cooked by her.
Past PerfectSubject + had + V3Object + had been + V3They had won the match → The match had been won by them.
Simple FutureSubject + will + V1 + ObjectObject + will be + V3We will clean the room → The room will be cleaned by us.
Modals (Can/Must)Subject + Modal + V1Object + Modal + be + V3You can solve this puzzle → This puzzle can be solved by you.