Passive voice describes a sentence structure that puts the person or thing receiving an action in the main position. Many students and writers learn about passive voice as a grammar rule, but good writing requires more than memorizing a formula. You need to know what passive voice means, how it works, how to identify it, and when to use it.
Writers often choose between active and passive voice based on the purpose of a sentence. Active voice usually gives writing a direct and clear feel, while passive voice can help writers focus on an action or its result. Once you understand the difference between active and passive voice, you can choose the structure that best fits your meaning.
Quick Answer
Passive voice puts the person or thing receiving an action in the subject position. It usually uses a form of “to be” + past participle. For example, “The teacher explained the lesson” uses active voice, while “The lesson was explained by the teacher” uses passive voice.
Writers can use passive voice when the actor remains unknown, does not matter, or should receive less attention. However, active voice often makes writing more direct and easier to understand. The key is to choose the voice that best communicates your meaning. Passive voice is not wrong or bad; writers simply need to use it purposefully.
TL;DR
- Passive voice focuses on the person or thing receiving an action.
- It commonly uses a form of “to be” + past participle.
- Example: “The report was written by Sara.”
- Writers can use passive voice when the actor is unknown, unimportant, or less important than the action.
- Active voice usually makes writing more direct, clear, and concise.
- Passive sentences do not always need a “by” phrase.
- To identify passive voice, check whether the subject receives the action.
- To change passive voice to active voice, identify the actor and make that actor the subject.
- Passive voice is not always bad; the best choice depends on the sentence’s purpose and context.
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What Is Passive Voice?
Passive voice describes a sentence in which the subject receives the action instead of performing it. In an active sentence, the subject performs the action. For example, “The chef cooked the meal” uses active voice because the chef performs the action. “The meal was cooked by the chef” uses passive voice because the meal receives the action.
In simple terms, passive voice means that the writer places the receiver of an action in the subject position. The passive voice definition often includes a form of the verb “to be” followed by a past participle. A writer may also include the person or thing that performed the action, but the sentence does not always need a by phrase.
How Does Passive Voice Work?
Passive voice changes the normal relationship between the subject and object. In an active sentence, the subject performs an action on an object. In a passive sentence, the writer moves the object into the subject position and focuses attention on the receiver of the action.
Consider this example: “The manager approved the request.” The manager acts as the actor, while the request receives the action. The passive version says, “The request was approved by the manager.” The request now becomes the grammatical subject. This structure helps writers emphasize the action or its result rather than the actor. Understanding the subject, object, actor, agent, and action makes passive construction easier to recognize.
Passive Voice Formula
The basic passive voice formula uses a form of “to be” + past participle. Writers change the form of “to be” according to the tense, while the main verb takes its past participle form.
The basic structure looks like this:
Subject + form of “to be” + past participle + optional by phrase
For example:
- The letter was written by Maria.
- The windows were cleaned yesterday.
- The report is reviewed every month.
Writers can also create negative passive sentences and passive questions. For example, “The report was not completed” uses a negative structure, while “Was the report completed?” uses a question. This passive voice structure helps writers build clear sentences across different tenses.
Active Voice vs. Passive Voice
The main difference between active voice and passive voice concerns who or what performs the action. Active voice puts the actor first, while passive voice puts the receiver first.
| Active Voice | Passive Voice |
| The teacher explained the lesson. | The lesson was explained by the teacher. |
| Sara cleaned the room. | The room was cleaned by Sara. |
| The company launched the product. | The product was launched by the company. |
| Someone stole my bike. | My bike was stolen. |
Active voice often gives writing a clear, direct, and concise style. Passive voice can help when the actor does not matter, remains unknown, or needs less attention. Neither structure works as the best choice in every situation. Good writers choose the voice that supports the sentence’s purpose.
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Examples of Passive Voice
You can find passive voice examples in everyday conversation, academic writing, news reports, technical documents, and formal communication. Look at these examples:
- The package was delivered this morning.
- The bridge was built in 1995.
- The results were published yesterday.
- The computer was repaired by a technician.
- The rules were changed last year.
- The documents have been signed.
Each example places the receiver of the action in the subject position. For example, “The technician repaired the computer” uses active voice, while “The computer was repaired by a technician” uses passive voice. These passive sentences show how writers can shift attention from the actor to the action or its result.
How to Identify Passive Voice
You can learn how to identify passive voice by checking several parts of a sentence. First, look for a form of “to be,” such as is, are, was, were, has been, or will be. Then check whether a past participle follows it. Finally, ask whether the subject receives the action.
For example, “The window was broken by Tom” contains was + broken, and the window receives the action. You can also find passive voice without a by phrase. In “The window was broken,” the sentence does not tell you who broke it. These clues can help you recognize passive voice and spot passive sentences during editing. However, “to be + past participle” alone does not always prove that a sentence uses passive voice.
Passive Voice in Different Tenses
English can use the passive voice in different tenses, although some forms sound more natural than others. Writers change the form of “to be” to show time while keeping the main verb in its past participle form.
| Tense | Example |
| Simple Present | The room is cleaned daily. |
| Simple Past | The room was cleaned yesterday. |
| Present Continuous | The room is being cleaned now. |
| Past Continuous | The room was being cleaned earlier. |
| Present Perfect | The room has been cleaned. |
| Past Perfect | The room had been cleaned. |
| Future | The room will be cleaned tomorrow. |
This approach covers common passive voice tenses, including simple present, simple past, present continuous, past continuous, present perfect, past perfect, and future forms.
When Should You Use Passive Voice?
Writers can use passive voice when the action or receiver matters more than the actor. For example, “The suspect was arrested” works well when the writer does not know who made the arrest or does not need to mention the officers.
You can also use passive voice when the actor seems obvious, irrelevant, or deliberately unspecified. Scientific and academic writers sometimes use passive constructions when they want to emphasize a process, result, experiment, or finding. For example, “The samples were tested at room temperature” focuses attention on the samples and the testing process.
Good writing does not require you to avoid passive voice completely. Instead, choose it when it gives the reader the right focus.
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When Should You Avoid Passive Voice?
You should avoid passive voice when it makes your writing vague, wordy, indirect, or difficult to understand. A passive sentence can hide the person responsible for an action, especially when the writer leaves out the agent.
For example, “Mistakes were made” does not tell readers who made the mistakes. An active sentence such as “The team made mistakes” gives readers clearer information.
Active voice often works better when you want to show responsibility, create a direct tone, or reduce unnecessary words. Writers should also avoid passive constructions when the actor provides important information. Instead of automatically asking, “Is passive voice bad?” ask whether the sentence clearly communicates your intended meaning. If active voice improves clarity, use it.
Passive Voice Without “By”
Many learners assume that every passive sentence needs “by.” That idea creates confusion. A writer can use passive voice without naming the actor at all.
For example:
The car was stolen.
This sentence does not tell us who stole the car, but it still uses passive voice. The car receives the action, and was stolen forms the passive construction.
Writers often omit the agent when they do not know who performed the action, when the actor does not matter, or when context already makes the actor clear. This creates a useful passive voice without “by” construction. Therefore, when you try to identify passive voice, do not search only for a by phrase. Look at the relationship between the subject and the action.
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How to Change Passive Voice to Active Voice
You can change passive voice to active voice by finding the actor, moving that actor into the subject position, and adjusting the verb when necessary.
Consider this passive sentence:
The report was prepared by Ahmed.
First, identify the actor: Ahmed. Next, move Ahmed to the subject position. Then change the sentence:
Ahmed prepared the report.
If the passive sentence does not name the actor, you may need to use context to determine who performed the action. For example, “The meeting was canceled” does not identify the person who canceled it. You should not invent an actor when the original sentence intentionally leaves that information unknown. This method helps you convert passive voice to active voice while preserving the original meaning.
Common Passive Voice Mistakes
Writers often make a few common passive voice mistakes. First, some learners believe that every passive sentence must contain “by.” As we saw earlier, writers can omit the agent. Second, writers sometimes choose the wrong form of “to be” for the tense. Third, they may use an incorrect past participle.
Another mistake involves using passive voice simply because it sounds formal. Formal writing does not require passive constructions. Writers should also avoid unnecessary repetition, wordiness, and unclear responsibility. Finally, remember that not every sentence containing “be + past participle” automatically uses passive voice. Some past participles function as adjectives. Careful attention to the sentence’s meaning will help you avoid these passive grammar errors.
Is Passive Voice Always Bad?
No. Passive voice is not always bad. This common belief can cause writers to remove useful constructions from their work. Passive voice can improve a sentence when the writer wants to emphasize the receiver, process, result, or action.
For example, “The vaccine was developed in record time” focuses on the vaccine and the development process. The identity of the developers may not matter in that particular sentence. In another context, active voice may provide a stronger option: “Scientists developed the vaccine in record time.”
The better question is not “Should I always avoid passive voice?” Instead, ask whether the sentence communicates the intended idea clearly. Use active voice when it gives readers stronger information, and use passive voice when it creates the right focus.
Passive Voice vs. Passive-Looking Adjectives
Some sentences can look passive even when the past participle works as an adjective. This distinction can confuse learners who use a simple “to be + past participle” test.
Consider:
The door was closed by the guard.
Here, the guard performs the action, so the sentence clearly uses passive voice.
Now consider:
The door was closed.
This sentence may describe either a completed action or the door’s current state, depending on the context. Words such as broken, tired, interested, excited, and closed can sometimes function as adjectives. You need to examine the meaning and context rather than relying on a single grammar clue. This distinction helps advanced learners understand why passive participles and adjectives do not always work in exactly the same way.
Can Every Verb Be Used in Passive Voice?
Not every verb can form a normal passive construction. Passive voice generally requires a transitive verb, because the structure needs an object that can move into the subject position.
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For example:
Active: The chef cooked the meal.
Passive: The meal was cooked by the chef.
The verb cooked takes the object “the meal,” so the sentence can form a passive construction.
In contrast, an intransitive verb does not take a direct object in the same way. For example, “The baby slept” does not provide an object that you can move into the subject position. Therefore, you cannot normally create a standard passive version of that sentence. Understanding transitive and intransitive verbs helps you know which verbs can form passive sentences.
Passive Voice With Modal Verbs, Infinitives & Gerunds
English also allows passive constructions with modal verbs, infinitives, and gerunds. Modal verbs combine with “be + past participle.” For example, “The work must be completed today” uses a modal passive.
Writers can also use a passive infinitive, such as “to be completed.” For example, “The form needs to be completed before Friday.” English also allows passive gerund structures, such as “being examined.”
These forms can look more advanced, but the basic idea remains the same: the sentence focuses on the receiver of the action. You may also encounter get-passive constructions, such as “He got injured,” and have something done, such as “She had her car repaired.” These structures expand the ways English can express passive or passive-like meanings.
Passive Voice in Academic and Scientific Writing
Many learners associate passive voice with academic writing and scientific writing. Writers have traditionally used passive constructions in research papers and lab reports because they can emphasize methods, processes, and results rather than individual researchers.
For example:
The samples were stored at 20°C.
This sentence focuses on the samples and the procedure. However, modern academic writing does not require writers to use passive voice in every sentence. Active voice can often make research writing clearer and more direct:
The researchers stored the samples at 20°C.
The best choice depends on the purpose of the sentence. Use passive voice when the process or result deserves attention, but choose active voice when identifying the actor makes the information clearer.
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Frequently Asked Questions About Passive Voice
What is passive voice in simple terms?
Passive voice places the receiver of an action in the subject position. For example, “The cake was baked by Sara” uses passive voice.
What is an example of passive voice?
“The letter was sent yesterday” provides a simple passive voice example. The letter receives the action.
What is the difference between active and passive voice?
Active voice puts the actor first: “Ali opened the door.” Passive voice puts the receiver first: “The door was opened by Ali.”
How do you identify passive voice?
Look for a form of “to be” + past participle and check whether the subject receives the action.
How do you change passive voice to active voice?
Find the actor, move that actor into the subject position, and adjust the verb to create a natural active sentence.
Is passive voice grammatically correct?
Yes. Passive voice is grammatically correct and useful in many contexts. Writers simply need to choose it for a clear purpose.
Final Thoughts
Passive voice gives writers another way to organize information and control emphasis. You do not need to avoid it simply because some writing advice favors active voice. Instead, consider what your sentence needs to communicate. If the actor matters, active voice may provide greater clarity. If the action, result, or receiver matters more, passive voice may work better.
The most effective writers understand when to use passive voice, when to avoid it, and how to recognize it. Once you understand its structure, examples, rules, and common uses, you can make deliberate choices instead of treating passive voice as a grammar mistake.
