Active to Passive Conversion

You already know the passive formula from Passive Voice Basics and can form passive sentences across all tenses. The formula never changes: be + past participle. But knowing the formula and being able to convert — or change — active sentences to passive voice freely are two different skills. This lesson on active and passive voice trains the conversion skill through 4 challenges:

1. Statement conversion — the core active-to-passive transformation across all tenses
2. Questions, negatives & commands — where auxiliary behaviour changes
3. Phrasal verbs & non-passivizable sentences — where particles must stay together and some sentences simply cannot be made passive
4. Reverse conversion — turning passive back to active and choosing the right voice

Each challenge builds on the previous one. By the end, you will be able to change any active sentence to passive (and passive to active) in any tense — or decide that passive voice is not possible.

Prerequisite: This lesson assumes you are comfortable with passive formation in all tenses. If not, start with Passive Voice Basics and Passive in Different Tenses first.

Active → Passive: Core Statement Conversion

This is the foundation skill. Every active-to-passive conversion follows the same 5 steps — regardless of tense.

The 5-Step Conversion Process

Result: Fresh meals are prepared by the chef every day.

Quick Tense Reference

Use this compact table when converting. The only thing that changes is the form of "be":

For the full tense-by-tense breakdown, see Passive in Different Tenses.

Worked Examples Across Tenses

Watch Out: Subject-Verb Agreement

When the object becomes the passive subject, make sure "be" agrees with its new subject:

When to Include or Omit "by"

As a quick reminder (see full rules in Passive Basics):

Two-Object Verbs: Which Object Becomes the Subject?

Some verbs take two objects — a person and a thing. Either can become the passive subject:

The person-as-subject form is more natural in everyday English. For a full list of two-object verbs, see Passive Voice Basics.

👉 Practice Active → Passive: Core Conversion →

Converting Questions, Negatives & Commands

Converting statements is the core skill. But real English includes questions, negatives, and commands too — and each type has its own conversion pattern. The good news: the passive formula (be + V3) still applies. The difference is in how the auxiliaries behave.

Passive Questions

Yes/No Questions

In active yes/no questions, "do/does/did" is the auxiliary. In passive, "be" replaces "do/does/did" — and it moves to the front:

The Do/Does Trap: The biggest mistake learners make is keeping "do/does/did" in passive questions: "Do packages delivered on Sundays?" This is always wrong. In passive, "be" is the auxiliary — "do/does/did" never appears. If you see "do" in your passive question, something is wrong.

Wh-Questions

For wh-questions, keep the wh-word at the front, then follow question word order:

Pattern: Wh-word + be (passive auxiliary) + subject + past participle?

The "Who" Question — Special Case:

When "who" is asking about the doer (the agent), the passive question puts "by" at the end:

• Active: Who wrote this poem?
• Passive: Who was this poem written by?

The preposition "by" goes at the end in everyday English. (Formal: By whom was this poem written? — grammatically correct but rare in modern usage.)

Passive Negatives

In passive negatives, "not" joins the passive auxiliary. "Do/does/did + not" is replaced by "be + not":

Note: When the active subject is "nobody" or "no one", the passive becomes negative: Nobody told me → I wasn't told.

Passive Commands (Imperatives)

Active commands have no visible subject ("you" is implied). The passive imperative uses a special structure:

Pattern: Let + object + be + past participle

For negative commands, "not" goes between the object and "be": Let the paintings not be touched.

Note: Passive imperatives are relatively rare in modern English. You are more likely to encounter them in formal or written contexts. In everyday speech, people usually prefer modal passives: The window should be opened or The report must be sent immediately.

👉 Practice Converting Questions, Negatives & Commands →

Phrasal Verbs & Non-Passivizable Sentences

Some active-to-passive conversions are straightforward. Others are tricky — either because the verb has a particle that must be handled carefully, or because the sentence simply cannot be made passive at all. This section covers both challenges.

Phrasal Verbs in Passive: Keep the Particle

When a phrasal verb or prepositional verb is made passive, the particle or preposition must stay with the verb. Never separate them:

The Particle Trap: The most common error is dropping the particle in passive: "The children are looked by a babysitter." This changes the meaning entirely ("looked" alone is not the same as "looked after"). The preposition or particle is part of the verb — it always stays attached.

Common Phrasal Verbs in Passive

Can This Sentence Be Made Passive?

Not every sentence can be converted to passive voice. Before attempting a conversion, apply this two-step test:

Test 1: Does the verb have a direct object?

If the verb is intransitive (no direct object), the sentence cannot be made passive:

Common intransitive verbs that cannot be made passive: happen, arrive, die, sleep, exist, appear, disappear, occur, come, go, fall, rise, sit, stand, lie, walk, run, swim, laugh, cry

Test 2: Is the verb an action verb (not stative)?

Some verbs are transitive (they have an object) but describe a state, not an action. These stative transitive verbs are not normally used in the passive:

Common stative verbs that resist passive: resemble, fit (= be the right size), suit, lack, have (= possess), contain, cost, weigh (= have weight)

Note: Some verbs can be stative OR active depending on meaning. "Fit" meaning "be the right size" → no passive. But "fit" meaning "install" → passive is fine: A new lock was fitted yesterday.

The Two-Step Decision Flowchart

Before converting any sentence, ask:

1. Does the verb have a direct object? → If NO → cannot be passive
2. Is the verb an action verb? → If NO (stative) → cannot be passive
3. If YES to both → proceed with the 5-step conversion

👉 Practice Phrasal Verbs & Non-Passivizable Sentences →

Passive → Active & Choosing the Right Voice

So far, you have practised converting active sentences to passive. Now let's reverse the direction — and then practise choosing which voice is more appropriate in context. This mixed practice of active and passive voice exercises develops true conversion fluency.

Passive → Active: The 4-Step Reverse Process

Worked Examples

Supplying a Subject When No Agent Is Given

Many passive sentences have no "by" phrase. When converting these to active, you need to supply a logical subject:

When to Choose Active vs Passive

Sometimes both voices are grammatically correct, but one is more appropriate for the context. Here are guidelines:

Examples:

👉 Practice Passive → Active & Mixed Conversion →

Common Mistakes to Avoid

Quick Summary

The 5-Step Active → Passive Conversion

Step 1 → Identify the tense Step 2 → Move the object to subject position Step 3 → Choose the correct form of "be" for the tense Step 4 → Add the past participle (V3) Step 5 → Include "by + agent" only if important

Converting Questions

Converting Negatives

Active: S + do/does/did + not + V → Passive: S + is/are/was/were + not + V3

Converting Commands

Active: V + object → Passive: Let + object + be + V3

Passive → Active (Reverse)

Step 1 → Identify the tense from the passive form Step 2 → Find the agent (or supply one: they/someone/people) Step 3 → Convert "be + V3" back to the active verb form Step 4 → Agent becomes subject; passive subject becomes object

The "Can It Be Passive?" Test

1. Does the verb have a direct object? → If no → ❌ cannot be passive
2. Is the verb an action verb (not stative)? → If no → ❌ cannot be passive
3. Both yes? → ✅ proceed with conversion

Phrasal Verbs Rule

The particle or preposition always stays with the verb in passive: looked after, dealt with, called off, broken into, carried out.

Practice Tips

1. Start with statements, then level up. Master the 5-step conversion for simple statements first. Once those feel automatic, move to questions and negatives — the extra step of handling auxiliaries becomes much easier when the base conversion is solid.

2. Read the sentence aloud before and after. When you convert a sentence, read both versions aloud. If the passive version sounds unnatural or clumsy, it might be a sign that active voice is the better choice — or that the verb cannot be made passive.

3. Always check the particle. After converting a phrasal verb, look at the result: does the verb still have its particle? If "looked after" became just "looked", you have lost the meaning. Make this check a habit.

4. Practise the reverse direction. Most exercises focus on active → passive. But converting passive → active is just as important — it forces you to identify the tense and supply a subject, which strengthens your understanding of both voices.

5. Collect non-passivizable verbs. Keep a personal list of verbs that cannot be made passive (happen, arrive, resemble, fit, etc.). Every time you encounter one in context, add it. This builds your instinct for spotting sentences that should stay active.

Practice All Exercises

Put everything together with these active to passive voice exercises online. All 80 multiple choice questions come with answers and explanations — from changing active sentences to passive across all tenses to converting passive back to active. Practise active and passive sentences, passivize phrasal verbs, and spot non-passivizable verbs at the B1–B2 level.

👉 Practice Passive → Active & Mixed Conversion →