Active and Passive Voice

🟢 Lite — Quick Review (1h–1d)

Rapid summary for last-minute revision before your exam.

Active voice places the grammatical subject as the doer of the verb’s action (e.g., The boy kicked the ball). Passive voice places the subject as the receiver, built with a form of the auxiliary be plus the past participle (e.g., The ball was kicked by the boy). Only transitive verbs (those taking a direct object) can be passivised; intransitive verbs such as arrive, sleep, or happen have no passive form.

The transformation rule: Object + be + past participle (+ by + agent).
The auxiliary be must match the original tense: writes → is written, was writing → was being written, has written → has been written.
Modals survive passivisation: can write → can be written, must complete → must be completed.

🟡 Standard — Regular Study (2d–2mo)

Standard content for students with a few days to months.

How the transformation works

The active-to-passive shift involves three mechanical moves: the object of the active sentence becomes the subject of the passive, the main verb becomes a past participle preceded by a form of be, and the original subject moves into a by + agent phrase. When the agent is unknown, obvious, or irrelevant, the by-phrase is dropped, producing an agentless passive (The window was broken rather than The window was broken by someone).

Tense correspondence in NECO questions

The auxiliary be in the passive carries the tense of the active verb. Candidates must memorise the pairing because examiners test every tense at least once across a paper set.

Active tense	Active verb	Passive form
Simple Present	writes / teach	is written / is taught
Simple Past	wrote / taught	was written / was taught
Present Continuous	is writing	is being written
Past Continuous	was writing	was being written
Present Perfect	has written	has been written
Future	will write	will be written

Reporting verbs and passivisation

Reporting verbs with a that-clause admit two passive equivalents: impersonal (It was said that he was ill) and personal (He was said to be ill). NECO Paper 2 essay and comprehension tasks in many papers require the personal form for tighter sentences.

Mechanics students forget

Pronouns change case: object pronouns me, him, her, us, them become subject pronouns I, he, she, we, they in the passive (Him gave the book → He was given the book).
Past participles of irregular verbs (taught, broken, stolen, written) must be spelled correctly.
The base form after be is the past participle, not the base verb (The book was wrote is wrong; was written is correct).

🔴 Extended — Deep Study (3mo+)

Comprehensive coverage for students on a longer study timeline.

Edge cases that trip up candidates

Three constructions are passivised differently from the standard SVO pattern.

Reporting-clause passivisation: People believe that she won the race → It is believed that she won the race or She is believed to have won the race.
Causative have/get: She had her hair cut (passive meaning, active form) — NECO sometimes frames this as a “rewrite in passive” trap, but the sentence is already passive in meaning.
Stative participles as adjectives: The window is broken can be a true passive event or a descriptive adjective; only context distinguishes them.

Common mistakes examiners exploit

Mistake	Wrong output	Correct output
Passivising an intransitive verb	The baby was slept by the mother	Grammatically impossible — keep active
Wrong tense of be	The book wrote by him	The book was written by him
Wrong irregular participle	The match was boken	The match was broken
Unchanged pronoun case	Him was given the book	He was given the book
Stating the obvious agent	The match was won by Nigeria (when context already names Nigeria)	Drop the by-phrase

Exam strategy for NECO

The voice-change question in standard papers appears in Paper 1 (Objective/Aptitude) as a sentence-transformation item worth 2–4 marks and can resurface in Paper 2 (Essay & Comprehension) when instructors ask for a paragraph rewrite. Spend at most 60 seconds per item: identify the object, swap, change the verb to past participle, prepend the matching be, then adjust the pronoun. If the agent is conversational, omit by + agent to sound natural.

Practice prompts

Rewrite in passive voice: The committee has approved the new curriculum.
Rewrite in active voice: The stolen car was recovered by the police within two hours.

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Active and Passive Voice