The Core Difference
Voice in grammar describes the relationship between the verb and the subject of a sentence — specifically, whether the subject is performing the action or receiving it.
- Active voice: The subject performs the action. "The dog bit the man."
- Passive voice: The subject receives the action. "The man was bitten by the dog."
In active voice, the sentence follows a clear Subject → Verb → Object structure. In passive voice, that order is reversed, and a form of the verb "to be" is added alongside the past participle of the main verb.
How to Identify Passive Voice
The passive voice almost always contains two tell-tale signs:
- A form of "to be" (is, was, were, has been, will be, etc.)
- A past participle (bitten, written, completed, decided)
Sometimes the original doer of the action is omitted entirely: "The report was submitted." — by whom? We don't know. This is called the agentless passive.
Why Active Voice Is Usually Preferred
Writing guides — from school style sheets to professional journalism standards — generally recommend active voice as the default. Here's why:
- Clarity: Active sentences make it immediately clear who is doing what.
- Concision: Active constructions typically use fewer words.
- Energy: Active prose feels more direct, confident, and engaging to read.
- Accountability: Active voice names the actor, which matters in journalism, business, and legal writing.
Comparison Table
| Passive | Active |
|---|---|
| Mistakes were made. | The manager made mistakes. |
| The budget was approved by the board. | The board approved the budget. |
| The window was broken. | Tom broke the window. |
| The findings are discussed below. | We discuss the findings below. |
When Passive Voice Is the Right Choice
Passive voice gets an unfairly bad reputation. There are legitimate — sometimes essential — reasons to use it:
1. When the Actor Is Unknown or Irrelevant
"The ancient temple was constructed around 500 BCE." — We don't know who built it, and it doesn't matter for the sentence's purpose.
2. When the Receiver of the Action Is More Important
"Three people were injured in the explosion." — The victims are the focus, not who caused it.
3. Scientific and Academic Writing
Passive voice is conventional in scientific writing to emphasize the process over the researcher: "The samples were heated to 100°C." This conveys objectivity and reproducibility.
4. Diplomatic or Tactful Communication
"Errors were made in the original report" softens blame in sensitive professional contexts — though this can also shade into evasion, so use with care.
A Common Myth: Passive Is Always Wrong
Many word processors (and grammar checkers) flag passive voice automatically, leading writers to believe it's an error. It's not. It's a stylistic choice. The problem arises only when passive voice is used habitually, creating muddy, lifeless writing — not when it's used deliberately for effect or clarity.
Quick Tips for Better Voice Control
- Read your sentences aloud — passive voice often feels heavier and slower.
- Ask "who is doing this?" If the answer matters, use active voice.
- Search your drafts for forms of "to be" + past participle as a passive voice detector.
- Don't edit out every passive — edit out lazy passives that obscure meaning.
The Bottom Line
Mastering voice is about intention. Active voice should be your default because it's clearer and more engaging. But passive voice is a legitimate and useful tool when the situation calls for it. The best writers don't avoid one over the other — they choose deliberately.