What is the difference between active and passive voice?

In active voice, the subject performs the action (The dog chased the ball). In passive voice, the subject receives the action (The ball was chased by the dog). Active voice is more direct and concise; passive voice shifts focus to the receiver of the action and is used when the actor is unknown, unimportant, or when objectivity is needed.

When should I use passive voice?

Use passive voice when: (1) the actor is unknown or unimportant (My car was stolen), (2) you want to emphasize the object (The Mona Lisa was painted by da Vinci), (3) in scientific/technical writing for objectivity (The solution was heated to 100C), or (4) to avoid blaming or naming someone directly (Mistakes were made).

Is passive voice wrong in English?

No, passive voice is not grammatically wrong. However, overusing it makes writing wordy, indirect, and harder to read. Academic style guides like APA recommend active voice for clarity, though passive is perfectly acceptable � and often preferred � in scientific writing, formal reports, and when the actor is unknown.

How do I convert passive voice to active voice?

To convert passive to active: (1) identify who/what performs the action (often in the "by" phrase), (2) make that the subject, (3) use the base verb form. Example: "The report was written by Sarah" becomes "Sarah wrote the report." If there is no "by" phrase and the actor is unknown, active voice may not be possible.

How do you form the passive voice in different tenses?

The passive is formed with the correct form of "to be" + past participle. Present simple: is/are + eaten. Past simple: was/were + eaten. Present perfect: has/have been + eaten. Past continuous: was/were being + eaten. Future: will be + eaten. Modal: can/must be + eaten.

Should I use active or passive voice in IELTS writing?

In IELTS Task 1 (academic), passive voice is appropriate for describing processes (The water is heated and then filtered). In Task 2 essays, active voice is generally preferred for arguments and opinions (Governments should invest in education). Mixing both voices naturally demonstrates grammatical range, which is scored by examiners.

Active vs. Passive Voice: When and Why to Use Each

Prof. Mark Stevens

Professor of Applied Linguistics, TESOL certified. 20+ years teaching academic writing at UK universities. Specializes in sentence structure and clarity for non-native speakers.

Last updated: March 2026 � Based on Purdue OWL and Cambridge Grammar guidelines.

Quick Answer

Active voice: The subject does the action. "The chef cooked the meal." � Direct, strong, preferred for most writing.
Passive voice: The subject receives the action. "The meal was cooked by the chef." � Used when the actor is unknown, unimportant, or when objectivity is needed (scientific writing, formal reports).
Rule of thumb: Default to active voice. Switch to passive when you have a deliberate reason.

Active vs Passive Voice: Quick Comparison

Feature	Active Voice	Passive Voice
Structure	Subject + Verb + Object	Object + be + Past Participle (+ by Subject)
Example	The chef cooked the meal.	The meal was cooked by the chef.
Focus	Who did the action	What received the action
Tone	Direct, clear, engaging	Formal, objective, impersonal
Best for	Most writing, storytelling	Scientific writing, unknown actors

Voice Usage in Academic and Professional Writing

� ~75% of sentences in news articles use active voice (Reuters Style Guide)
� Scientific journals use passive in 30-40% of sentences for objectivity
� Passive voice questions appear in ~25% of TOEFL/IELTS grammar sections
� Academic style guides (APA, Chicago, Purdue OWL) recommend active voice as the default
� IELTS Task 1 process descriptions almost always require passive voice

Understanding the difference between active and passive voice is essential for clear writing, passing English exams, and producing professional-level English. The two voices are not competing options where one is "right" � they each serve a distinct communicative purpose.

Active Voice: Structure and Examples

In active voice, the subject performs the action. The structure is: Subject + Verb + Object. This is the default voice for most English writing because it is direct and unambiguous about who is doing what.

The teacher explained the grammar rule.
Shakespeare wrote Hamlet in 1600.
The government announced new policies.
Scientists discovered a new species.
She completed the project on time.

Passive Voice: Structure and Examples

In passive voice, the subject receives the action. The structure is: Subject + to be (conjugated) + past participle [+ by + agent]. The agent (doer of the action) can be omitted when unknown or unimportant.

The grammar rule was explained by the teacher.
Hamlet was written by Shakespeare in 1600.
New policies were announced by the government.
A new species was discovered.
The project was completed on time.

How to Form Passive Voice in Every Tense

Tense	Active Form	Passive Form	Example (Passive)
Present Simple	eats	is/are eaten	The cake is eaten every day.
Past Simple	ate	was/were eaten	The cake was eaten yesterday.
Present Perfect	has/have eaten	has/have been eaten	The cake has been eaten.
Past Continuous	was/were eating	was/were being eaten	The cake was being eaten when she arrived.
Future Simple	will eat	will be eaten	The cake will be eaten at the party.
Modal Verbs	can/must eat	can/must be eaten	The cake must be eaten before noon.

When to Use Passive Voice

Passive voice is not a mistake � it is a tool. Use it deliberately in these situations:

Actor unknown: "My wallet was stolen." (We do not know who stole it.)
Actor unimportant: "The bridge was built in 1920." (Who built it is less important than the fact it was built.)
Emphasize the object: "The Mona Lisa was painted by Leonardo da Vinci." (Focus is on the painting.)
Scientific/technical objectivity: "The solution was heated to 100�C and then filtered." (Standard lab report style.)
Diplomatic language: "Mistakes were made." (Avoids assigning blame directly.)
Formal announcements: "The winner has been selected." (Impersonal, formal tone.)

Active vs Passive Voice for IELTS Writing

IELTS examiners specifically look for grammatical range and accuracy. Knowing when to use each voice demonstrates sophisticated control of English grammar.

Task 1 (Academic) � Using Passive

Process diagrams: 'The water is filtered and then purified.'
Describing charts: 'The data was collected over five years.'
Manufacturing: 'The components are assembled by machine.'

Task 2 (Opinion Essays) � Using Active

Arguments: 'Governments should invest more in education.'
Your view: 'I believe technology improves quality of life.'
Evidence: 'Studies show that exercise reduces stress.'

Converting Between Active and Passive

To convert passive to active, identify the agent in the "by" phrase and move it to subject position:

Passive Voice	Active Voice
The report was written by Sarah.	Sarah wrote the report.
The law was passed by parliament.	Parliament passed the law.
English is spoken by millions.	Millions speak English.
The mistake was made by the team.	The team made the mistake.

When Passive Cannot Be Converted to Active

If there is no "by" phrase and the actor is unknown, it is often impossible � or unnatural � to convert to active:

My car was stolen. (no agent � who stole it is unknown)
The road has been closed. (official notice � who closed it is irrelevant)
She was born in London. ('born' is almost always passive)

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