Active and Passive Voice: Module Summary
1. What This Module Covered
Module 6 examined one of the most fundamental and most frequently discussed distinctions in English grammar — the difference between the active and passive voice. Beginning with the conceptual foundations of the distinction, the module moved through passive formation across all tenses, the communicative principles governing when to use the passive, the interaction of the passive with modal verbs and reporting verbs, the distinctive get passive, and a comprehensive survey of the errors that learners make most frequently when using passive constructions.
The table below summarises the core idea of each lesson.
| Lesson | Title | Core Idea |
|---|---|---|
| 1 | Active and Passive — Understanding the Difference | In active sentences the subject is the agent; in passive sentences the subject is the patient. The passive is formed with be + past participle. The by-phrase naming the agent is optional. Only transitive verbs can be made passive. |
| 2 | Forming the Passive Voice Across Tenses | The passive is formed with the appropriate tense of be + past participle. The past participle never changes — only the tense of be changes. Perfect continuous passive forms (have been being, had been being) are grammatically possible but almost always replaced by perfect simple passive forms. |
| 3 | When to Use the Passive Voice | The passive is used when the agent is unknown, unimportant, or obvious; when the patient is more important than the agent; to maintain topic continuity; to achieve end focus; in academic, scientific, journalistic, legal, and official writing; and to avoid assigning responsibility. The active is preferred when the agent is important, when directness is needed, and in informal contexts. |
| 4 | The Passive with Modal Verbs | Modal passives follow the pattern modal + be + past participle for present and future meaning, and modal + have been + past participle for past meaning. All major modal verbs — must, should, can, could, may, might, will, would, shall, ought to, had better, need to — combine with the passive in this way. |
| 5 | The Passive with Reporting Verbs | Passive reporting verb constructions follow two patterns — Pattern 1: it + passive reporting verb + that-clause; Pattern 2: subject + passive reporting verb + to-infinitive. In Pattern 2, the simple infinitive refers to current or future situations; the perfect infinitive (to have + past participle) refers to past situations. These constructions are essential tools for hedging in academic writing. |
| 6 | Get Passives | The get passive — get + past participle — is an informal alternative to the be passive that implies event, process, and change — often with connotations of accident, unexpectedness, or personal involvement. It is not appropriate in formal or academic writing. Fixed get passive expressions — get lost, get hurt, get promoted, get fired — must be learnt as set combinations. |
| 7 | Common Errors with the Passive Voice | The most common passive errors fall into seven categories — formation errors (omitting be, using present participle instead of past participle, using simple past instead of past participle); tense errors; errors of choice (passive where active is better, overuse); errors of construction (wrong agent placement, wrong preposition after passive); errors with intransitive verbs; errors of the passive subject; and errors of register. |
2. Key Terms Introduced in This Module
| Term | Definition |
|---|---|
| Active voice | A sentence construction in which the grammatical subject is the agent — the person or thing performing the action |
| Passive voice | A sentence construction in which the grammatical subject is the patient — the person or thing receiving or affected by the action |
| Agent | The person or thing performing the action of the verb |
| Patient | The person or thing receiving or affected by the action of the verb |
| By-phrase | The prepositional phrase beginning with by that identifies the agent in a passive sentence |
| Transitive verb | A verb that takes a direct object — only transitive verbs can be made passive |
| Intransitive verb | A verb that does not take a direct object — cannot be made passive |
| End focus | The principle that the most important information in a sentence is placed at the end — the passive allows writers to control what appears in this position |
| Topic continuity | The maintenance of a consistent grammatical subject across a series of sentences — the passive facilitates this |
| Impersonal passive | The use of the passive in academic and scientific writing to present actions and findings objectively, without reference to a personal agent |
| Modal passive | A construction combining a modal verb with be + past participle — e.g. must be verified, should be submitted |
| Modal perfect passive | A construction combining a modal verb with have been + past participle — e.g. must have been damaged, should have been established |
| Passive reporting verb | A construction using the passive of a reporting verb — it is believed that, the species is known to — to present claims impersonally |
| Get passive | An informal passive construction using get as the auxiliary verb — got damaged, get published |
| Dummy subject | The word it used as a grammatical subject with no referential meaning — used in Pattern 1 passive reporting verb constructions |
| Hedging | The use of tentative language — including passive reporting verb constructions — to present claims with appropriate caution in academic writing |
3. Key Rules to Remember
| Rule | Example |
|---|---|
| The passive is formed with the appropriate tense of be + past participle. | The findings were published last month. |
| Only transitive verbs can be made passive — intransitive verbs have no direct object and cannot be transformed. | The volcano erupted. (not was erupted) |
| The by-phrase is included only when the agent is known, relevant, and worth naming. | The theory was proposed by Darwin. / The findings were published last month. (agent omitted — obvious) |
| Use the simple past passive when a specific past time is mentioned; use the present perfect passive for ongoing relevance. | Vents were discovered in 1977. / More than 5,000 species have been identified since 1977. |
| Perfect continuous passive forms — have been being, had been being — are almost always replaced by perfect simple passive forms. | The site has been monitored since 2005. (not has been being monitored) |
| Modal passives follow modal + be + past participle for present/future; modal + have been + past participle for past. | Data must be archived. / Data must have been corrupted. |
| Pattern 1 passive reporting verb requires that in formal writing. | It is believed that the deep ocean contains many species. |
| Pattern 2 uses simple infinitive for current situations and perfect infinitive for past situations. | The species is believed to live at 4,000 metres. / The species is believed to have evolved in isolation. |
| The get passive is informal — use be passive in all formal and academic contexts. | The samples were collected last week. (not got collected in formal writing) |
| Use at for locations, using/with for instruments, and by only for agents after passive verbs. | Analysed at a laboratory. / Collected using sensors. / Proposed by Darwin. |
4. Common Errors to Remember
| Error ❌ | Correction ✅ |
|---|---|
| New species discovered every year. | New species are discovered every year. |
| The data was collecting when the system crashed. | The data was being collected when the system crashed. |
| The vents were first saw in 1977. | The vents were first seen in 1977. |
| Vents have been discovered in 1977. | Vents were discovered in 1977. |
| Darwin was proposed the theory. | The theory was proposed by Darwin. |
| The species is believed to evolve over millions of years. | The species is believed to have evolved over millions of years. |
| It is believed the ocean contains many species. | It is believed that the ocean contains many species. |
| The volcano was erupted in 1883. | The volcano erupted in 1883. |
| The samples were analysed by a laboratory. | The samples were analysed at a laboratory. |
| The samples got collected from twelve sites. | The samples were collected from twelve sites. |
| The results was published last month. | The results were published last month. |
| The site has been being monitored since 2005. | The site has been monitored since 2005. |
5. Looking Ahead
Module 6 has given you a thorough and systematic understanding of the active and passive voice in English — from the fundamental distinction between them to the most advanced applications in academic, scientific, and formal writing. The ability to choose between active and passive with confidence and precision is one of the hallmarks of sophisticated written English, and the knowledge built in this module will enhance every piece of formal writing you produce.
Module 7 — Reported Speech — examines another of the most important and most frequently used grammatical systems in English. Reported speech — sometimes called indirect speech or narration — is the system by which speakers and writers convey what someone said, thought, asked, or requested, without reproducing their exact words. It involves a systematic set of transformations — in tense, modal verb, pronoun, and time expression — that must be applied consistently and accurately. Module 7 examines all of these transformations in full, from the most elementary to the most advanced.