Active to Passive Voice – Quick Guide
1. What is Active and Passive Voice?
- Active voice: The subject does the action.
Example: She writes a letter. - Passive voice: The subject receives the action.
Example: A letter is written by her.
2. How to Change Active Voice to Passive
- Move the object of the active sentence to the subject position.
- Change the verb to: be + past participle (V3).
- Move the subject to the end (after “by”), or omit if unimportant.
- Keep the verb tense consistent.
3. Examples by Tense
| Tense | Active | Passive |
|---|---|---|
| Simple Present | She cooks food. | Food is cooked by her. |
| Present Continuous | They are building a house. | A house is being built by them. |
| Simple Past | He wrote a book. | A book was written by him. |
| Present Perfect | I have finished the work. | The work has been finished by me. |
| Simple Future | They will close the shop. | The shop will be closed by them. |
| Modal | You must follow the rules. | The rules must be followed by you. |
4. Structure Comparison
| Voice | Structure | Example |
|---|---|---|
| Active | Subject + Verb + Object | The cat ate the mouse. |
| Passive | Object + Be + V3 + (by + Subject) | The mouse was eaten by the cat. |
5. When to Use Passive Voice?
- Doer unknown or unimportant: English is spoken all over the world.
- Focus on action/result: The project was completed on time.
6. Quick Tips
- Not all verbs are used in passive (no passive for intransitive verbs like ‘sleep’).
- Use ‘by’ to introduce the agent (original subject), if needed.
- Match the verb tense with the active sentence.
7. Practice Converting – Try These!
People play cricket. → Cricket is played by people.
He is making tea. → Tea is being made by him.
They have finished the project. → The project has been finished by them.