Active And Passive Voice Examples

How the voices actually work in real writing

Active voice puts the subject doing the action first. Passive voice puts the thing receiving the action first. That's basically it for the definition. The mechanics are simple, which is why people still mess them up constantly in professional settings. I spend most of my time editing technical documentation and legal briefs, and I see the same mistakes over and over. Here's how it looks in practice.

Active: The engineer calibrated the sensor array before deployment. Passive: The sensor array was calibrated by the engineer before deployment.

Both sentences are grammatically correct. They just emphasize different things. The active version highlights who did the work. The passive version highlights the equipment that was worked on. Which one you pick depends on what matters in the context you're writing for.

Active And Passive Voice Examples in technical writing

Technical writers and engineers tend to default to active voice without really thinking about it. When you're documenting a procedure, saying "Insert the bolt into the housing" is clearer than "The bolt should be inserted into the housing." It cuts three words and removes ambiguity about who's supposed to do the inserting. But passive voice has legitimate uses. Here's one that trips people up: when the actor is unknown, irrelevant, or intentionally being omitted. In incident reports, for example, you might write "The firewall was breached at 0300 hours" because the focus is on the breach itself, not whoever did it. Sometimes you don't even know who did it yet. Other times, naming the actor would create liability issues or organizational friction that isn't worth dealing with at that moment. I had a specific problem with this a while back. I was reviewing a compliance document where someone had written "Mistakes were made in the quarterly audit" as a deliberate way to avoid assigning blame. When I pushed back on the editor, they argued the passive construction was protecting team morale. I agreed with them on that point, but then I noticed the same document also used passive voice in places where the actor was perfectly known and the omission was just lazy writing. Like "The report was submitted" when the next paragraph named the submitter. That second case was just inconsistent and confusing. I went through and made those active, leaving only the genuinely ambiguous attributions in passive. Saved maybe twenty minutes of debate in the review cycle.

When to convert between the two

A practical trick for deciding whether to use active or passive is to look at what you want the reader to focus on. If the person or thing performing the action is the key information, use active. If the recipient or the result is more important, use passive. That's not a hard rule, just a heuristic that works most of the time. Converting from passive to active usually involves finding the hidden agent. "The code was refactored" becomes "We refactored the code" if "we" is the right actor. Sometimes the agent is a general "they" or "someone," which makes the active version awkward. In those cases, passive is probably the better choice anyway. Don't force it. Here are a few more examples across different contexts.

Active: The committee approved the budget changes. Passive: The budget changes were approved by the committee. Active: The software update resolves the login timeout issue.

Passive: The login timeout issue is resolved by the software update. Active: Sarah completed the migration ahead of schedule. Passive: The migration was completed ahead of schedule by Sarah.

The last one is technically fine but reads clunkily because the agent comes at the end. In English, passive constructions tend to work best when the agent is either omitted entirely or placed early. "The migration was completed ahead of schedule" without the "by Sarah" is actually cleaner.

Common pitfalls

One pitfall that beginners miss is the double passive. It happens when you stack too many auxiliary verbs and past participles together. "The proposal had been previously been reconsidered" is nonsense. The fix is to strip it down to its simplest form. "The proposal was reconsidered" or "We had reconsidered the proposal," depending on what you need. Another issue is mixed constructions. You'll see sentences like "The decision was made by the team led by John." Two "by" phrases in one sentence. It's not wrong, but it's heavy. Split it or restructure: "The team, led by John, made the decision." There's also a subtle tone problem with passive voice. Overusing it can make writing sound evasive or impersonal. This matters more in some contexts than others. A press release from a corporation about a product recall will sound very different if it says "Customers were affected by the defective component" versus "We affected customers with our defective component." The first one is softer, the second one owns the mistake. Neither is grammatically wrong. They just serve different purposes. I've seen legal teams specifically request passive voice in certain documents because it creates plausible deniability. That's a feature, not a bug, in their world. It's worth knowing when you're writing for them versus writing for a general audience.

Quick reference for common verb forms

Present tense active: The analyst reviews the data. Present tense passive: The data is reviewed by the analyst. Past tense active: The analyst reviewed the data. Past tense passive: The data was reviewed by the analyst. Future tense active: The analyst will review the data. Future tense passive: The data will be reviewed by the analyst. Perfect tense active: The analyst has reviewed the data. Perfect tense passive: The data has been reviewed by the analyst. The pattern is consistent. Take the appropriate form of "to be," add the past participle, and optionally add "by" plus the agent. The active version just keeps the subject-verb-object order straightforward.

When passive voice is the right call

Passive voice isn't inherently bad writing. It's a tool, and like any tool, it has specific jobs. Use it when the actor is unknown, when the actor is obvious from context, when you want to de-emphasize the actor, or when the sentence structure demands it for flow. In scientific writing, passive was traditionally preferred because it creates an impression of objectivity. "The solution was heated to 100 degrees" sounds more detached than "We heated the solution to 100 degrees." That convention is shifting now. Many journals accept or even prefer active voice in methods sections because it's more direct. But you'll still see passive heavily used in certain fields, and that's fine. The main downside of passive voice is that it's almost always longer than the active equivalent. Extra words mean more cognitive load for the reader. In documentation where clarity and speed of comprehension matter, that length penalty adds up. I've found that converting passive constructions to active in my own work usually cuts word count by fifteen to twenty percent without losing any meaning. That's a rough average, but it's held up across dozens of documents. If you're unsure which voice to use, read the sentence out loud. The one that sounds more natural to you is probably the right one. Your ear knows more than you think it does.