Active and Passive Voice: Transformation Rules
Converting between voices across all tenses, handling two-object and phrasal verbs, the by/with agent-instrument distinction, and when passive voice is the better choice in WAEC writing.
Police and hospital media bulletins are passive factories precisely because responsibility is uncertain: "Two phones WERE STOLEN at the Kanon market; the victim WAS TREATED at the regional hospital; an investigation HAS BEEN OPENED." No one can legally name a suspect — the passive is the honest voice of the unfinished story.
Key Syllabus Learning Objectives
- 1Convert active to passive sentences in every tense without changing time meaning
- 2Produce the two passive forms of two-object verbs
- 3Retain particles and prepositions of phrasal verbs in the passive
- 4Explain why intransitive verbs have no passive
- 5Choose the agent (by) versus instrument (with) phrase correctly
The Conversion Algorithm
- Pronoun map used in transformation: I→me, we→us, he→him, she→her, they→them, you→you (and back).
- Modals keep their own passive frame: can→can be eaten, must→must be done, should have → should have been done.
- The only verb that changes form is the MAIN verb (to V3); auxiliaries multiply but never swap tense.
- Questions transform too: "Did the rain spoil the crops?" → "Were the crops spoiled by the rain?"
An ECGB exam instruction: "Candidates are warned that scripts WILL BE SEIZED if phones are seen" — future perfect-style "will be seized" with the agent (invigilators) omitted because it is obvious.
Same tense, new angle: BE takes the old tense, V3 takes the old meaning.
Passives Across the Tense Grid
- Continuous forms insert BEING; perfect forms insert BEEN; both stack: "had been being repaired" is grammatical but clumsy — avoid in essays.
- Habitual present with plural subject/object keeps ARE: "Farmers pick the pods" → "The pods ARE PICKED."
- Checklist for objective items: count the auxiliaries — a correct passive has exactly ONE more "be-family" word than the active had.
- The agent usually vanishes when the subject was vague: "Someone stole my bag" → "My bag was STOLEN" (by someone adds nothing).
A Akosombo Dam bulletin: "Water HAS BEEN RELEASED; turbines ARE BEING INSPECTED; the spill WILL BE MONITORED until dusk." — three different passive aspects in one official statement.
Learn the eight regular passive frames plus modal passive; that covers every exam transformation.
Two Objects, Phrasals, and the By-Phrase Family
- Causative have/get something done is a passive cousin: "Ama had her braids done in Kumasi."
- "People say that..." → "It is said that..." and "He is said to be..." — a WAEC favourite transformation.
- "They make us work" → passive of bare infinitive restores TO: "We are made TO work."
- Let-imperative passive: "Wash the hands" → "Let the hands BE WASHED."
A wedding report: "The bride was presented WITH gifts by the elders; the couple were showered WITH blessings." — instrument-with even in figurative use, by for real doers.
Promote a person first, keep verb particles, and restore "to" after made/seen/heard in the passive.
When Passive Wins, When Active Wins
- Science reports love passive: "The solution was heated" — the heater is irrelevant.
- News headlines mix: active for attributed blame, passive for casualties ("three people were injured").
- Over-use test: if you count more than one passive in three consecutive essay sentences, rewrite one actively.
- Intransitive verbs (happen, die, arrive, occur, appear, sleep) refuse the passive: *the accident was happened — a top-ten WAEC error.
A district assembly report: "A new block of classrooms WAS CONSTRUCTED at Sefwi Wiawso (doer unknown/irrelevant); the contractor DELIVERED it in June (doer now matters for praise/blame)."
Passive = focus on the affected; active = focus on the actor; choose deliberately.
- In transformation questions, write the tense name above your draft first ("present perfect →") so the BE-form is chosen deliberately: has/have been + V3.
- If the instruction says "begin with the words given", the given opening forces which object to promote — follow it exactly and drop the other version.
- The "It is said that / He is said to" pattern appears almost every series; practise four verbs: say, think, believe, report.
- For agent choice: WHO did it = by; WHAT was used = with; the exam loves "cut WITH a knife BY the robber" order — instrument then agent.
- In Paper 2 reports and formal letters, use passive 2-3 times for impersonal authority ("the item was recovered"), but keep narrative points active for Organisation marks.
- Wrong participle: *"The fish was EAT by the cat" — always V3 (eaten), never the base or past simple form.
- Tense drift during transformation: converting "has collected" to "was collected" instead of "has been collected".
- Dropping the verb particle: *"The meeting was looked" for "looked into" — the particle must survive.
- Passiving an intransitive verb: *"a stolen was happened", "the baby was died".
- Losing the "to" after perception/causative verbs in the passive: "He was seen ENTER" instead of "seen to enter".
- Forgetting "by" with a pronoun in object form: "The letter was written by I" — by ME.
- Can I produce the passive of any of the twelve tense frames on demand?
- Can I give both passive versions of "The teacher rewarded Ama a prize"?
- Can I keep the particle in "They did away with the rule → The rule was done away WITH"?
- Can I restore "to" in "We heard them sing → They were heard TO sing"?
- Can I explain when a news headline should choose passive over active?
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