Choosing Actor Voice versus Patient Voice | Filipino Grammar

Choose actor voice when the actor-like participant is the pivot; choose patient voice when an affected or selected patient is the pivot. That structural choice changes the verb and both core participant markers. Discourse then helps decide which licensed structure best fits the conversation: actor voice often presents what someone did, while patient voice often continues tracking a particular affected item.

Neither voice is simply English active or passive. Natural English normally uses an active sentence for both Filipino choices. Unless labeled otherwise, all forms below are neutral contemporary Filipino.

The quick comparison

Question to ask	Actor voice	Patient voice
Which participant is pivot?	actor, experiencer, or actor-like mover	affected, created, consumed, or selected patient
Typical common-noun frame	verb + ang actor + ng patient	verb + ng actor + ang patient
Typical personal-name frame	si actor	ni actor; si personal patient
Frequent discourse use	answer “What did the actor do?”; introduce an activity	answer “What happened to this item?”; maintain patient continuity
Common referential tendency	ng patient is often newly introduced	ang patient is often identifiable
Important caution	a specific patient can remain ng-marked	an ang patient can be generic

Voice and markers form one construction. Changing ang to ng without changing the verb does not change voice.

Step 1: confirm that both verb families exist

Many transitive roots have an actor-voice and a patient-voice family, but not every root freely permits every affix. With luto, the ordinary contrast is magluto versus lutuin:

Nagluto si Aya ng pusit para sa hapunan.

Aya cooked squid for dinner. (actor voice)

Niluto ni Aya ang pusit na binili natin sa palengke.

Aya cooked the squid that we bought at the market. (patient voice)

The first selects si Aya as pivot and presents ng pusit as the non-pivot patient. The second selects the identified squid as ang pivot and marks Aya with ni. Both English translations remain active.

Before choosing by discourse, learn the attested pair and its aspect forms. The actor-voice overview and patient-voice overview survey the alternatives.

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Voice choice begins with a lexical question: “Which established Filipino verb families can describe this event?” Discourse cannot license an invented patient-voice or actor-voice form.

Step 2: choose the participant to organize the clause around

When a question seeks the actor, actor voice normally aligns the unknown with the actor-pivot construction:

Sino ang nag-ayos ng sirang proyektor bago ang seminar?

Who repaired the broken projector before the seminar? (actor questioned; actor voice)

When the question seeks the patient, patient voice is natural:

Aling proyektor ang inayos ni Tomas bago ang seminar?

Which projector did Tomas repair before the seminar? (patient questioned; patient voice)

This is not merely a word-order preference. Nag-ayos selects the repairer; inayos selects the repaired item. The markers follow that selection.

The same logic appears in statements:

Naglinis ang mga boluntaryo ng tatlong silid bago dumating ang mga lumikas.

The volunteers cleaned three rooms before the evacuees arrived. (actor voice; activity report)

Nilinis ng mga boluntaryo ang silid na gagamitin ng mga sanggol.

The volunteers cleaned the room that the babies will use. (patient voice; identified room tracked)

The modifiers make the likely discourse difference explicit, but they do not create the voice. Actor voice can retain an identifiable patient, and patient voice can have generic readings.

Step 3: use referentiality as a tendency, not a rule

An actor-voice ng phrase can be specific:

Binasa ba ni Lira? Hindi—nagbasa si Lira ng ulat na iniwan mo sa mesa.

Did Lira read it? No—Lira read the report you left on the table. (actor voice with an identifiable ng-marked patient)

The relative clause identifies the report, but nagbasa still selects Lira as pivot. Conversely, patient voice can make a kind the pivot:

Karaniwang kinakain sa bayang ito ang dilis na pinatuyo sa araw.

Sun-dried anchovies are commonly eaten in this town. (generic patient pivot)

Ang dilis denotes a food kind, not one definite batch. Therefore ng = a and ang = the are both unreliable shortcuts.

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Use identifiability to predict a likely voice only after structure is clear. The strongest rule is still: actor voice selects the actor pivot; patient voice selects the patient pivot.

Step 4: keep aspect independent

Completed, incompleted, and contemplated aspect occur in either voice. Compare an unfolding repair:

Nag-aayos si Mila ng mga sirang silya habang wala pang klase.

Mila is repairing broken chairs while classes have not started yet. (incompleted actor voice)

Inaayos ni Mila ang silyang gagamitin ng punong-guro.

Mila is repairing the chair that the principal will use. (incompleted patient voice)

Both events are underway. The contrast is pivot alignment, not present versus past. Contemplated mag-aayos/aayusin would preserve the same voice contrast for an event not yet begun.

Negation likewise preserves voice:

Hindi inayos ng tekniko ang lumang radyo dahil wala nang piyesa.

The technician did not repair the old radio because replacement parts were no longer available. (negative patient voice)

Step 5: let connected discourse guide continuity

—Ano ang ginawa ni Ben sa mga dokumento? —Inayos niya ang mga iyon ayon sa petsa, saka niya inilagay sa kabinet.

—What did Ben do with the documents? —He arranged them by date, then put them in the cabinet. (patient voice maintains the documents as pivot)

The question establishes mga dokumento as the discourse center. Patient-voice inayos and conveyance inilagay continue tracking them through ang mga iyon and an omitted recoverable patient. Actor voice would be grammatical in another discourse, but this sequence makes patient continuity efficient.

Commands also often use patient voice when a known item is the task target:

Pakisara mo ang bintanang katabi ng aparador bago tayo umalis.

Please close the window beside the cabinet before we leave. (patient-voice request)

This is a tendency of task discourse, not a ban on actor-voice imperatives. The chosen lexical construction and intended pivot still control the grammar.

Register and word order

Both voices occur in conversation, journalism, academic prose, and formal notices. Formal prose may more often keep an established topic visible or use a marked ay construction, but ay does not create patient voice. Neutral clauses in both voices remain predicate-first.

Ang nasirang tulay ay inayos ng pamahalaang panlalawigan noong tag-araw.

As for the damaged bridge, the provincial government repaired it during the summer. (formal, marked topic structure; patient voice)

The fronted bridge was already the patient pivot of inayos. In conversation, Inayos ng pamahalaang panlalawigan ang nasirang tulay... is the neutral predicate-first version.

Decision flow

Identify the event and list its participants.
Confirm the established verb families for that root.
If the actor is the intended pivot, choose actor voice and mark actor ang/si, patient ng.
If the patient is the intended pivot, choose patient voice and mark actor ng/ni, patient ang/si.
Choose aspect separately.
Check whether the resulting pivot supports the question, contrast, or referent being tracked.

Common Mistakes

Choosing from the English active translation

❌ Niluto si Aya ng gulay para sa mga panauhin.

Incorrect alignment — patient-voice niluto cannot keep Aya as the si-marked pivot.

✅ Niluto ni Aya ang gulay para sa mga panauhin.

Aya cooked the vegetables for the guests. (patient voice)

Changing markers without changing the verb

❌ Naglinis ni Poldo ang silid na gagamitin bukas.

Incorrect — actor-voice naglinis conflicts with a ni actor and ang patient.

✅ Nilinis ni Poldo ang silid na gagamitin bukas.

Poldo cleaned the room that will be used tomorrow. (patient voice)

Treating an identifiable patient as automatically ang-marked

❌ Bumili si Carmina ang bisikletang ipinakita mo sa kaniya.

Incorrect — actor-voice bumili requires its patient as a ng phrase even though the bicycle is identifiable.

✅ Bumili si Carmina ng bisikletang ipinakita mo sa kaniya.

Carmina bought the bicycle you showed her. (actor voice with specific non-pivot patient)

Treating patient voice as an English passive with an oblique actor

❌ Inayos ang gripo sa pamamagitan ni Mang Rene.

Incorrect English-passive calque — the ordinary actor of patient voice takes ni, not sa pamamagitan ni.

✅ Inayos ni Mang Rene ang gripo bago magtanghali.

Mang Rene repaired the faucet before noon. (patient voice)

Key Takeaways

Choose a licensed voice family first, then decide which participant serves as pivot. Actor voice and patient voice reorganize the same event through different verb morphology and marker frames. Discourse prominence, questions, commands, and referent continuity make one choice more useful in context, while specificity remains only a tendency. The best rule combines lexical structure, pivot choice, and discourse—not the closest English gloss.

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