Active voice and passive voice can describe the same event from different angles. In The chef cooked the meal, the focus is on the chef. In The meal was cooked, the focus moves to the meal. The event is the same, but the sentence highlights a different part of it. That is why these two forms often appear side by side when learners compare them.

In active voice, the subject does the action. In The child broke the vase, the child is the subject and the doer. In passive voice, the subject receives the action. In The vase was broken, the vase is the subject, and the action happens to it. Active voice follows subject + verb + object. Passive voice follows subject + be + past participle, and the object of the active sentence becomes the subject of the passive sentence.

Core subject and action roles

Idea
In active voice, the subject does the action.
In passive voice, the subject receives the action.

Use active voice when the doer is known and matters to the sentence. The manager approved the plan sounds direct because the manager is the important part of the message. Active voice also works best when you want short, clear writing. Maria opened the door is easier to follow than a longer passive version. News, instructions, conversation, and everyday writing often prefer active voice because it states who does what without delay.

Situations that favor active voice

Usage	Explanation
Known doer	Use active voice when the person or thing doing the action matters.
Clear and direct style	Use active voice when you want writing that feels short and easy to follow.
Strong responsibility	Use active voice when you want to show who is responsible for the action.

Use passive voice when the result or the receiver is more important than the person who acted. The window was broken during the storm keeps the attention on the window. The letter was sent yesterday focuses on the letter and the action it received. Passive voice also helps when the sentence needs to sound formal, neutral, or carefully organized. The choice often depends on what the speaker wants the listener to notice first.

Situations that favor passive voice

Usage	Explanation
Result matters most	Use passive voice when the result is more important than the doer.
Focus on the receiver	Use passive voice when you want to highlight what happened to something.
Neutral formal tone	Use passive voice when you want a less personal and more objective tone.

Passive voice is natural when the doer is unknown. My phone was stolen tells the situation clearly even when nobody knows who took it. It also sounds normal when the doer is obvious or unimportant. Dinner is served at seven does not need to name the person who serves it. The road was closed for repairs leaves out the workers because the closure matters more than the people who did it.

When the doer is not needed

Usage	Explanation
Doer is unknown	Use passive voice when you do not know who did the action.
Doer is obvious	Use passive voice when the doer is easy to guess and does not need to be named.
Doer is unimportant	Use passive voice when the action matters more than the person who did it.

A passive sentence can include the doer with a by phrase. The song was written by Adele names the person who wrote it, while the subject still stays on the song. Use this pattern when the doer is worth mentioning, but the sentence should keep the receiver in focus. The structure is subject + be + past participle + by + agent. Without the by phrase, the sentence leaves the doer out completely.

Scientific and official writing often uses passive voice to sound objective and process-focused. The samples were tested in the lab keeps attention on the samples and the procedure. The results were recorded in the report sounds neutral and factual. This style appears in lab reports, notices, manuals, and academic writing when the action or result matters more than the person performing it. In these settings, passive voice gives the writing a measured, impersonal tone.

Passive voice in formal writing

Usage	Explanation
Scientific reports	Use passive voice when you want to sound objective and process focused.
Official records	Use passive voice in writing that should sound formal and impersonal.
Describing procedures	Use passive voice when the steps are more important than the person doing them.