Change of Voice
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Introduction & Key Concepts
Study MaterialChange of Voice
Change of Voice is an important topic in English Grammar and competitive examinations. It deals with changing a sentence from Active Voice to Passive Voice or from Passive Voice to Active Voice without changing the original meaning of the sentence.
Voice indicates whether the subject of the sentence performs the action or receives the action. Understanding Voice helps improve grammar accuracy, sentence construction, writing quality, and comprehension skills.
What is Voice?
Voice is the form of a verb that shows the relationship between the subject and the action in a sentence.
It tells us:
- Who performs the action
- Who receives the action
- How the action is expressed
Types of Voice
There are two types of Voice in English Grammar:
- Active Voice
- Passive Voice
Active Voice
In Active Voice, the subject performs the action directly.
Structure:
Subject + Verb + Object
Example:
Rahul writes a letter.
Here, “Rahul” performs the action.
Passive Voice
In Passive Voice, the subject receives the action.
Structure:
Object + Helping Verb + Past Participle + by + Subject
Example:
A letter is written by Rahul.
Here, “A letter” receives the action.
Main Difference Between Active and Passive Voice
| Active Voice | Passive Voice |
|---|---|
| Subject performs the action | Subject receives the action |
| Focus is on the doer | Focus is on the action |
| Direct and strong expression | Formal and indirect expression |
| Common in daily communication | Common in formal and academic writing |
Basic Formula for Changing Voice
Active Voice:
Subject + Verb + Object
Passive Voice:
Object + Appropriate Form of “Be” + Past Participle + by + Subject
Key Concepts of Change of Voice
1. Interchange of Subject and Object
While changing Active Voice into Passive Voice:
- The object becomes the subject.
- The subject becomes the object.
Example:
Active → She writes a poem.
Passive → A poem is written by her.
2. Use of Past Participle (V3)
The main verb in Passive Voice is always used in its Past Participle (Third Form).
Examples of Verb Forms
| Base Form | Past Form | Past Participle |
|---|---|---|
| write | wrote | written |
| eat | ate | eaten |
| do | did | done |
| take | took | taken |
3. Appropriate Use of Helping Verbs
Passive Voice requires suitable helping verbs according to tense.
Examples
| Tense | Helping Verb in Passive |
|---|---|
| Present Simple | is / am / are |
| Past Simple | was / were |
| Future Simple | will be |
| Present Perfect | has been / have been |
| Past Perfect | had been |
4. Use of “By”
The preposition “by” is generally used before the doer in Passive Voice.
Active → The teacher teaches grammar.
Passive → Grammar is taught by the teacher.
5. Tense Consistency
The tense of the sentence remains unchanged while changing voice.
Examples
| Active Voice | Passive Voice |
|---|---|
| He writes a letter. | A letter is written by him. |
| He wrote a letter. | A letter was written by him. |
| He will write a letter. | A letter will be written by him. |
When Passive Voice is Used
Passive Voice is commonly used:
- When the doer is unknown.
- When the action is more important than the doer.
- In scientific and technical writing.
- In formal and official communication.
- When emphasis is on the result of action.
Examples
The road was repaired yesterday.
(The doer is unknown or unimportant.)
Pronoun Changes in Passive Voice
| Active Form | Passive Form |
|---|---|
| I | me |
| we | us |
| he | him |
| she | her |
| they | them |
| you | you |
Change of Voice in Different Sentence Types
1. Assertive Sentences
Active → She sings a song.
Passive → A song is sung by her.
2. Interrogative Sentences
Active → Did he complete the work?
Passive → Was the work completed by him?
3. Imperative Sentences
Active → Open the door.
Passive → Let the door be opened.
Sentences with Two Objects
Some sentences contain:
- Direct Object
- Indirect Object
Such sentences can form two passive constructions.
Example
Active → She gave me a gift.
Passive → I was given a gift by her.
OR
A gift was given to me by her.
Tenses That Usually Do Not Form Passive Voice Easily
Some continuous perfect tenses generally do not form natural passive constructions.
- Present Perfect Continuous
- Past Perfect Continuous
- Future Perfect Continuous
Commonly Tested Areas in Exams
| Exam Focus Area | Purpose |
|---|---|
| Tense Conversion | Correct tense transformation |
| Helping Verb Usage | Proper auxiliary selection |
| Verb Form | Correct past participle usage |
| Pronoun Change | Correct pronoun transformation |
| Imperative Sentences | Special passive structure |
| Interrogative Sentences | Question structure handling |
Benefits of Learning Change of Voice
- Improves grammar accuracy.
- Enhances sentence construction skills.
- Strengthens writing ability.
- Improves comprehension and editing skills.
- Helps in formal and academic writing.
- Increases exam-solving confidence.
Important Exam Tips
- Identify Subject, Verb, and Object first.
- Check the tense carefully.
- Use the correct helping verb.
- Always use Past Participle (V3).
- Maintain original sentence meaning.
- Change pronouns correctly.
- Practice tense-wise transformations regularly.
Change of Voice is an essential grammar topic that helps transform sentences between Active and Passive forms while preserving meaning. Understanding subject-object relationships, tense structures, helping verbs, and verb forms enables candidates to solve Voice-related questions accurately in competitive examinations.