Active and Passive Voice — Rules, Examples & Easy Tricks
Key Points At A Glance
- Voice shows whether the subject does the action or receives it.
- Active voice: the subject performs the action (Riya wrote a letter).
- Passive voice: the subject receives the action (A letter was written by Riya).
- The passive voice always uses a form of "be" + the past participle.
- The form of "be" changes according to the tense.
- Use active voice for clear writing; passive when the doer is unknown.
"The teacher praised the student." "The student was praised by the teacher." Both sentences mean the same thing — yet they are written in two different voices. Understanding active and passive voice is a favourite exam topic and a skill that instantly improves your writing. Let's make it simple.
What Is Voice in Grammar?
Voice tells us whether the subject of a sentence is doing the action or receiving it. There are two voices in English:
- Active voice — the subject performs the action.
- Passive voice — the subject receives the action.
Active Voice
In the active voice, the doer of the action comes first. The structure is:
- Subject + verb + object
- Example: Riya wrote a letter.
Here Riya (the subject) is doing the action of writing. Active voice is direct, clear and strong, so it is usually preferred in everyday writing.
Passive Voice
In the passive voice, the object becomes the focus and the doer moves to the end (or disappears). The structure is:
- Object + form of "be" + past participle + (by + subject)
- Example: A letter was written by Riya.
Now the letter is the focus, not Riya. Passive voice is useful when the doer is unknown or unimportant — for example, "The window was broken."
How to Change Active to Passive (Step by Step)
1. Move the object to the front to make it the new subject. 2. Choose the correct form of the verb "be", matching the original tense. 3. Change the main verb to its past participle (third form). 4. Put the original subject at the end after "by" (if needed).
Example:
- Active: The chef cooks the meal.
- Passive: The meal is cooked by the chef.
Tense-Wise Quick Chart
The form of "be" changes with the tense:
- Simple Present: is / am / are + V3 — The work is done.
- Simple Past: was / were + V3 — The work was done.
- Present Continuous: is / am / are being + V3 — The work is being done.
- Present Perfect: has / have been + V3 — The work has been done.
- Simple Future: will be + V3 — The work will be done.
When to Use Each Voice
- Use active voice for clear, direct writing (most of the time).
- Use passive voice when the doer is unknown ("My bike was stolen"), or when you want to focus on the action rather than who did it.
Common Mistakes to Avoid
- Forgetting to change the verb to its past participle (third form).
- Using the wrong form of "be" for the tense.
- Adding "by + doer" when it is unnecessary — "It was decided" is often enough.
Quick Summary
- Active: subject does the action (Riya wrote a letter).
- Passive: subject receives the action (A letter was written by Riya).
- Passive = form of be + past participle.
- Match the form of "be" to the original tense.
Grammar rules stick fastest when you practise, so try converting five active sentences into passive today. Since voice depends on tenses, our Tenses in English Grammar notes are the perfect companion. To revise efficiently, use How to Study Smart for Exams, and explore more English notes and all our study notes any time.
Frequently Asked Questions
In active voice the subject performs the action (The dog chased the cat), while in passive voice the subject receives the action (The cat was chased by the dog).
Move the object to the front, use the correct form of "be" for the tense, change the main verb to its past participle, and add "by + the doer" at the end if needed.
Look for a form of the verb "be" (is, am, are, was, were, been) followed by a past participle. If both are present, the sentence is usually passive.
Use the passive voice when the doer is unknown or unimportant, or when you want to focus on the action — for example, "The road was repaired last week."
No, the tense stays the same. Only the form of the verb "be" changes to match that tense while the main verb becomes a past participle.
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