Active and Passive Voice

Understanding the difference between active and passive voice can greatly impact how you express ideas. In active voice, the subject performs the action, making sentences direct and engaging. Conversely, passive voice shifts the focus to the action itself and is often used in more formal or objective writing. Each voice has its place in language and plays an important role in how you construct sentences.

Determining when to use active or passive voice depends on the clarity, emphasis, and tone you want to achieve. Active voice often feels more natural and lively, while passive voice can sound more formal or impersonal. Practicing with examples and exercises can help you better recognize and apply both voices in everyday conversation and writing.

The Difference Between Active and Passive Voice

Active Voice

The active voice refers to sentences in which the subject performs the action expressed by the verb. Writers most often convey their messages using the active voice because it is clear, concise, and direct. As a result, active voice typically creates a strong and straightforward tone.

Examples

• The boy hit the car.
• The cat ate the fish.
• People hate spiders.

The examples above illustrate the basic structure of active voice sentences: subject, verb, and object. In the first sentence, “the boy” is the subject who performs the action “hit.” In the second sentence, “the cat” is the subject, and “ate” is the verb describing the action it performs. The final sentence again shows the subject “people” carrying out the action “hate.”

In every example, the subject is the one taking action. Without the subject, there would be no performer of the action.

Passive Voice

Scientific writing often uses or favors the passive voice. In passive voice sentences, the subject receives the action rather than performing it. These sentences are typically formed using a form of “to be” followed by the past participle of the main verb. The passive voice also often requires a preposition, usually “by,” to introduce the doer of the action when it is included.

Examples

• The car was hit by the boy.
• The fish was eaten by the cat.
• The spiders were hated by people.

Compare the sentences “the boy hit the car” and “the car was hit by the boy” to see the difference between active and passive voice. The active sentence follows the order: subject (the boy), verb (hit), and object (the car). In contrast, the passive sentence follows a different structure in which the object of the active sentence becomes the subject of the passive sentence (the car), followed by a form of “to be” (was), the past participle (hit), and a preposition (by) introducing the original subject.

When compared directly, passive sentences can sound weaker or more complex than their active counterparts. In the examples above, the passive structure changes the sentence form and introduces the preposition “by.”

When Do You Use Passive or Active Voice?

Why use the passive voice?

There are situations where using the passive voice is appropriate and even necessary. Like the active voice, the passive voice serves a specific purpose. You may choose the passive voice when you want to emphasize the action itself rather than the person or thing performing it.

When the actor is not the focus, the passive voice can create a sense of distance and objectivity. This can help readers analyze information more neutrally, which is why passive constructions are common in scientific and academic writing.

However, distancing the reader from the narrative can sometimes have the opposite effect. The reader may become less engaged if too many passive sentences are used. For this reason, active voice should generally surround passive constructions so that the passive sentences stand out and serve their intended purpose.

The passive voice is also useful when the subject is unknown or unimportant. Its structure allows the writer to omit the actor entirely. In some contexts, this can be used to avoid identifying the culprit or to keep the focus on the event rather than on who caused it.

Passive sentences often sound more formal and objective. Formality is frequently interpreted as professionalism, especially in academic or technical contexts. For this reason, the passive voice can be an effective stylistic choice when used carefully and appropriately.