The Empirical Grammar Suite

The 12 Tenses Masterclass: Active & Passive Voice

An exhaustive diagnostic curriculum covering temporal mechanics, aspectual nuance, and active-to-passive voice transformations across all 12 English tenses with 120 interactive questions.

Foundational Linguistics: Active vs. Passive Voice Dynamics

Grammatical voice describes the semantic relationship between the verb, the subject performing the action (Agent), and the entity receiving or undergoing the action (Patient/Theme).

1. Information Flow & Prominence

Active Voice: Emphasizes the Agent (e.g., "The researcher analyzed the data"). It is direct, vigorous, and action-oriented.

Passive Voice: Elevates the Patient/Result to subject position (e.g., "The data was analyzed"). Essential in academic, legal, and scientific writing where the methodology or outcome supersedes the performer.

2. Transitivity Constraints

Only transitive verbs (verbs that take a direct object) can be transformed into the passive voice. Intransitive verbs (arrive, occur, disappear, sleep, happen) cannot form passives because there is no direct object to promote to subject position.

3. The By-Phrase Agent

In passive structures, the agent is either omitted entirely (when unknown, irrelevant, or obvious) or placed in a terminal prepositional phrase: by + agent (e.g., "...was ratified by parliament").

4. Continuous Perfect Constraints

While theoretical formulas exist for continuous perfect passives ("has been being tested"), natural English style avoids triple-auxiliary stacking (BEEN BEING) and substitutes the simple perfect passive instead.

1. Present Simple (Active & Passive)

Active Voice Formula
Subject + Base Verb (V1) (+ s/es)

"The senior committee evaluates every proposal."

Passive Voice Formula
Subject + is / am / are + Past Participle (V3)

"Every proposal is evaluated by the senior committee."

Linguistic Note: Present Simple describes timeless facts, scientific laws, habits, and scheduled realities. In the passive voice, it transfers prominence from the performer to the recipient of the action or the process itself.
Assessment Module: 10 Diagnostic Questions
1. (Active) Water at 100 degrees Celsius.
2. (Passive) When seawater in desalination units, steam is produced.
3. (Active) The Oxford Academic press peer-reviewed treatises annually.
4. (Passive) All clinical trials by the ethics committee.
5. (Passive) The theoretical model highly robust by sociolinguists.
6. (Active) These ancient manuscripts in the national archives.
7. (Active) Stative verbs generally conjugated in progressive forms.
8. Select the correct passive transformation of: "Researchers collect data daily."
9. Intransitive verbs like "arrive" can readily form present simple passives (e.g. "The train is arrived").
10. (Passive) The empirical audit
on an annual basis.
conducts
is conducted

2. Present Continuous (Active & Passive)

Active Voice Formula
Subject + is / am / are + Verb(-ing)

"The lab team is currently testing the new compound."

Passive Voice Formula
Subject + is / am / are + being + Past Participle (V3)

"The new compound is currently being tested by the lab team."

Linguistic Note: Captures ongoing actions, temporary shifts, and active processes unfolding around now. The passive form inserts the progressive aspect auxiliary being directly before the V3 participle.
Assessment Module: 10 Diagnostic Questions
1. (Active) She for her doctoral defense at the moment.
2. (Passive) The historic manuscript by senior archivists.
3. (Active) Software architects a new algorithmic security layer.
4. (Passive) Grant applications by the faculty dean today.
5. (Active) The master chef the reduction sauce right now.
6. (Passive) The institutional database to prevent outages.
7. (Passive) Solar panels across the campus roof.
8. Convert to passive: "The board is analyzing the fiscal budget."
9. "The suspect is being interrogated" focuses on the ongoing nature of the interrogation rather than the identity of the detectives.
10. (Passive) Network traffic
in real time by security bots.
monitors
is being monitored

3. Present Perfect (Active & Passive)

Active Voice Formula
Subject + have / has + Past Participle (V3)

"The author has published three treatises on syntax."

Passive Voice Formula
Subject + have / has + been + Past Participle (V3)

"Three treatises on syntax have been published by the author."

Linguistic Note: Connects past occurrences with present consequences or cumulative life experiences. The passive voice inserts been to highlight completed actions whose outcomes remain active.
Assessment Module: 10 Diagnostic Questions
1. (Active) I the statistical breakdown. Here it is.
2. (Passive) The medal to the lead geneticist.
3. (Active) Archaeologists an unlooted tomb in Luxor.
4. (Passive) The firewall software across all server nodes.
5. (Active) Mark isn't here; he to Geneva.
6. (Passive) The acquisition terms by the lawyers.
7. (Passive) The shipment yet.
8. Convert to passive: "Someone has stolen the prototype."
9. "The bridge has been collapsed yesterday" is grammatically sound.
10. (Passive) The findings
in the Nature journal.
published
have been published

4. Present Perfect Continuous

Active Voice Formula
Subject + have / has + been + Verb(-ing)

"Scholars have been debating this doctrine for decades."

Passive Voice Constraint
have/has + been + being + V3 (Rare/Avoided)

Stylistically replaced by Present Perfect Simple Passive.

Linguistic Note: Emphasizes the unbroken duration of an action up to the present. To prevent awkward stacking ("has been being debated"), formal English substitutes the Present Perfect Passive ("has been debated").
Assessment Module: 10 Diagnostic Questions
1. (Active) We for the committee's verdict for an hour.
2. (Active) Dr. Vance cognitive phonology since 2018.
3. (Active) The engineers on the power grid all afternoon.
4. (Active) The economic metric steadily over recent quarters.
5. (Active) Diplomats the border accord all week.
6. (Active) The pipe since yesterday morning.
7. (Stylistic Passive) The policy for years in parliament.
8. Why is "The house has been being painted for weeks" avoided by educated writers?
9. Present Perfect Continuous is often used to explain visible present side-effects (e.g., "His hands are oily because he has been fixing the engine").
10. (Active) Analysts
the market index since dawn.
monitored
have been monitoring

5. Past Simple (Active & Passive)

Active Voice Formula
Subject + Past Simple Verb (V2)

"Alexander Fleming discovered penicillin in 1928."

Passive Voice Formula
Subject + was / were + Past Participle (V3)

"Penicillin was discovered in 1928 by Alexander Fleming."

Linguistic Note: The core tense for historical reporting and completed chronological narratives. The passive form uses was/were + V3 to focus on historical events rather than historical figures.
Assessment Module: 10 Diagnostic Questions
1. (Active) The delegation the Oxford library in 2019.
2. (Passive) The stone bridge in 1842.
3. (Active) Shakespeare Hamlet around 1600.
4. (Passive) Ancient scrolls in the fire.
5. (Passive) The treatise posthumously in Paris.
6. (Active) The guard the intruder enter.
7. (Passive) Both conspirators at the border.
8. Convert to passive: "The general signed the armistice."
9. In negative past simple active questions, which auxiliary verb is obligatory?
10. (Passive) The resolution
unanimously by the delegates.
adopted
was adopted

6. Past Continuous (Active & Passive)

Active Voice Formula
Subject + was / were + Verb(-ing)

"Technicians were repairing the power generator at midnight."

Passive Voice Formula
Subject + was / were + being + Past Participle (V3)

"The power generator was being repaired at midnight."

Linguistic Note: Describes scene-setting or ongoing actions interrupted by a sudden past event. In the passive, was/were being + V3 highlights a past process underway at an exact temporal point.
Assessment Module: 10 Diagnostic Questions
1. (Active) I the treaty when the lights went out.
2. (Passive) The suspect when new evidence emerged.
3. (Active) Scholars the merger during the lunch break.
4. (Passive) The gold bullion under heavy armed guard.
5. (Active) While I , my colleague was drafting the brief.
6. (Passive) The election results live across the country.
7. (Passive) The accounting division when the discrepancy surfaced.
8. Convert to passive: "The crew was filming the documentary."
9. In narrative prose, the Past Continuous passive effectively creates background atmospheric tension.
10. (Passive) The obsolete structure
throughout that entire month.
dismantled
was being dismantled

7. Past Perfect (Active & Passive)

Active Voice Formula
Subject + had + Past Participle (V3)

"The committee had finalized the charter before the summit."

Passive Voice Formula
Subject + had + been + Past Participle (V3)

"The charter had been finalized before the summit."

Linguistic Note: Represents the "past of the past." It orders multiple past events chronologically. The passive form had been + V3 clarifies which event occurred prior to the main narrative timeline.
Assessment Module: 10 Diagnostic Questions
1. (Active) By the time we arrived, the train the station.
2. (Passive) The diplomatic pouch before dawn.
3. (Active) She her dissertation before the committee met.
4. (Passive) The entire village before the floodwaters rose.
5. (Active) I declined dinner because I .
6. (Passive) Forensic tests proved the deed .
7. (Passive) I couldn't enter; the main gate .
8. Convert to passive: "The board had approved the budget before June."
9. The Past Perfect Passive is frequently used in formal third conditional structures (e.g. "Had the treaty been signed...").
10. (Passive) The negotiations
long before midnight.
concluded
had been concluded

8. Past Perfect Continuous

Active Voice Formula
Subject + had + been + Verb(-ing)

"Scientists had been monitoring the seismic fault for years."

Passive Voice Constraint
had + been + being + V3 (Avoided)

Formally substituted with Past Perfect Passive.

Linguistic Note: Measures the continuous duration of an action up to a designated past reference point. In passive contexts, formal English substitutes the Past Perfect Passive ("The fault had been monitored").
Assessment Module: 10 Diagnostic Questions
1. (Active) They were exhausted; they for five hours.
2. (Active) She the manuscript for months before translating it.
3. (Active) The fuel tank long before the aircraft landed.
4. (Active) He at Harvard for a decade before receiving tenure.
5. (Active) The athlete was out of breath because he .
6. (Active) Detectives the syndicate for months.
7. (Stylistic Passive) The policy for hours before adoption.
8. What is the primary semantic emphasis of the Past Perfect Continuous?
9. Stative verbs of emotion (love, hate, prefer) are standard in the Past Perfect Continuous.
10. (Active) The delegation
for the summit for weeks.
prepared
had been preparing

9. Future Simple (Active & Passive)

Active Voice Formula
Subject + will + Base Verb (V1)

"The Chancellor will announce the budget tomorrow."

Passive Voice Formula
Subject + will + be + Past Participle (V3)

"The budget will be announced tomorrow."

Linguistic Note: Expresses spontaneous decisions, objective future facts, promises, and predictions. The passive voice (will be + V3) is standard in official announcements and formal procedures.
Assessment Module: 10 Diagnostic Questions
1. (Active) That parcel looks heavy. I you carry it.
2. (Passive) The maritime treaty next Wednesday.
3. (Active) The university the honor roll tomorrow.
4. (Passive) A thorough forensic audit next month.
5. (Active) The phone is ringing; I it.
6. (Passive) The winner at the gala.
7. (Passive) The keynote address by the Prime Minister.
8. Convert to passive: "The council will review the bylaws."
9. "Will" does not take third-person singular "-s" (e.g. "He will arrives" is incorrect).
10. (Passive) New regulations
on January 1st.
implement
will be implemented

10. Future Continuous

Active Voice Formula
Subject + will + be + Verb(-ing)

"The board will be reviewing credentials all afternoon."

Passive Voice Constraint
will + be + being + V3 (Avoided)

Substituted with Future Simple Passive.

Linguistic Note: Describes an action in progress at a specific future moment or routine upcoming arrangements. In passive contexts, writers use the Future Simple Passive to maintain syntactic clarity.
Assessment Module: 10 Diagnostic Questions
1. (Active) This time tomorrow, I over the Atlantic.
2. (Active) The chauffeur at terminal 3.
3. (Active) The faculty oral examinations all morning.
4. (Active) Dr. Sarah the lab during the director's leave.
5. (Active) Do not call at 2 PM; I on the grant.
6. (Active) I the CEO tomorrow as a matter of routine.
7. (Stylistic Passive) The proposal at tomorrow's session.
8. Which sentence is more polite and less intrusive when inquiring about someone's plans?
9. Stative verbs (like 'know', 'belong') are avoided in the Future Continuous.
10. (Active) Professor Aris
his findings at 10 AM.
presented
will be presenting

11. Future Perfect (Active & Passive)

Active Voice Formula
Subject + will + have + Past Participle (V3)

"By 2030, scientists will have synthesized the antidote."

Passive Voice Formula
Subject + will + have + been + Past Participle (V3)

"By 2030, the antidote will have been synthesized."

Linguistic Note: Projects oneself forward to look backward at an action completed before a future deadline. The passive construction utilizes will have been + V3.
Assessment Module: 10 Diagnostic Questions
1. (Active) By June, she from Oxford.
2. (Passive) The highway by December.
3. (Active) I the entire dossier before the trial.
4. (Passive) The journal issue by Friday.
5. (Active) The hurricane by tomorrow morning.
6. (Passive) All merger terms by noon.
7. (Active) We our entire budget by Q4.
8. Convert to passive: "By Friday, contractors will have restored the facade."
9. The auxiliary "have" changes to "has" for third-person singular (e.g. "She will has finished").
10. (Passive) The server
before the workday begins.
will repair
will have been repaired

12. Future Perfect Continuous

Active Voice Formula
Subject + will + have + been + Verb(-ing)

"By next month, she will have been teaching here for 20 years."

Passive Voice Constraint
will + have + been + being + V3 (Avoided)

Replaced by Future Perfect Passive in formal prose.

Linguistic Note: Projects oneself forward to measure the continuous duration of an action up to a designated future milestone. Passive formulations are substituted with the Future Perfect Passive to prevent quadrupled auxiliary chains.
Assessment Module: 10 Diagnostic Questions
1. (Active) By December, she at Harvard for a decade.
2. (Active) By 6 PM, I for eight hours straight.
3. (Active) Next month, they in London for three years.
4. (Active) In 2030, this laboratory for half a century.
5. (Active) By next semester, I syntax for two years.
6. (Active) By midnight, we for ten solid hours.
7. (Stylistic Passive) The firm three times by 2028.
8. What two time markers are mechanically necessary for a Future Perfect Continuous sentence?
9. Stative verbs (know, understand, belong) cannot be used in Future Perfect Continuous; use Future Perfect Simple instead.
10. (Active) By Friday, diplomats
for an entire week.
negotiated
will have been negotiating

Official Academic Revision Dossier (PDF)

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