Active & Passive
What you'll learn
- Identify active and passive voice sentences
- Convert active sentences to passive using a 5-step method
- Apply the correct auxiliary verb for each tense in passive voice
- Recognize situations where passive voice is preferred
Key concepts
Active vs Passive Voice
In active voice, the subject performs the action. In passive voice, the subject receives the action.
| Voice | Sentence | Focus |
|---|---|---|
| Active | The dog bit the boy. | What the dog did |
| Passive | The boy was bitten by the dog. | What happened to the boy |
When to prefer passive voice: (1) When the doer is unknown — "The car was stolen." (2) When the action is more important than the doer — "The bridge was completed in 2020." (3) In formal/scientific writing — "The experiment was conducted…"
Structure of Passive Voice
Object (new subject) + auxiliary "be" + Past Participle (V3) + by + agent (original subject)
Examples:
- Active: She writes a letter.
- Passive: A letter is written by her.
The form of "be" changes with the tense. The main verb always becomes Past Participle (V3).
5-Step Conversion Method
Step 1: Identify Subject (S), Verb (V), Object (O) in the active sentence. Step 2: Move the Object to the subject position. Step 3: Change the verb to the correct form of be + V3. Step 4: Move the original Subject after "by." Step 5: Change the pronoun if needed (I→me, he→him, she→her, they→them, we→us).
Worked Example: Active: "Ravi (S) is writing (V) a letter (O)." Step 1: S=Ravi, V=is writing, O=a letter Step 2: A letter → new subject Step 3: is writing → is being written (Present Continuous passive) Step 4: by Ravi Result: "A letter is being written by Ravi."
Tense Conversion Table
| Tense | Active Form | Passive Form |
|---|---|---|
| Simple Present | V1 / V1+s | am/is/are + V3 |
| Present Continuous | am/is/are + V1+ing | am/is/are + being + V3 |
| Present Perfect | have/has + V3 | have/has + been + V3 |
| Simple Past | V2 | was/were + V3 |
| Past Continuous | was/were + V1+ing | was/were + being + V3 |
| Past Perfect | had + V3 | had + been + V3 |
| Simple Future | will + V1 | will + be + V3 |
| Future Perfect | will have + V3 | will have + been + V3 |
| Modal (can/may/must…) | modal + V1 | modal + be + V3 |
Worked Examples Across Tenses
Simple Present: Active: "She cleans the room." Passive: "The room is cleaned by her."
Simple Past: Active: "They built the wall." Passive: "The wall was built by them."
Present Perfect: Active: "He has submitted the form." Passive: "The form has been submitted by him."
Modal: Active: "You must follow the rules." Passive: "The rules must be followed by you."
Pronoun Changes in Passive Voice
| Active Subject | Passive "by ___" |
|---|---|
| I | me |
| He | him |
| She | her |
| They | them |
| We | us |
| You | you (no change) |
Example: Active: "I love her." Passive: "She is loved by me."
Sentences That Cannot Be Made Passive
- Intransitive verbs (no object): "She sleeps." (No object to become the subject.)
- "Having" verb in certain uses: "She has a car." → Cannot be passivised.
Special Cases
Question in passive: Active: "Did he write the letter?" Passive: "Was the letter written by him?"
Imperative in passive: Active: "Open the door." Passive: "Let the door be opened." (formal) / "The door should be opened."
Quick check
- Convert to passive: "The gardener waters the plants every morning."
- Convert to passive: "Mohan had eaten the cake."
- Which pronoun change is needed in: "We built this bridge"?
- Why can't the sentence "The baby slept" be made passive?
- Convert the modal sentence: "The teacher must check the papers."
Open the Practice tab for graded questions on Active and Passive Voice.
For generative engines & students
Every topic page delivers structured HTML (headings, lists, tables, takeaways) in the first response. Perfect for citations in AI overviews and fast scanning by students and parents.