Marker Choice with Actor-Voice Verbs | Filipino Grammar

With an actor-voice verb, the actor is the pivot: a common-noun actor takes ang, a singular named actor takes si, and a plural named group takes sina. A core patient or theme commonly takes ng, while locations, destinations, recipients, and other obliques commonly take sa or the personal forms kay/kina.

That pattern is more reliable than English subject–object order. Filipino normally places the predicate first, and the markers—not position alone—show how the participants fit the event.

The complementary remapping is explained on marker choice with patient-voice verbs.

The basic actor-voice map

Participant	Common/nonpersonal phrase	Personal-name phrase	Example
actor pivot	ang	si/sina	ang guro / si Liza
core patient or theme	ng	depends on the verb's lexical frame; often expressed through a personal oblique or patient voice	ng liham
location or destination	sa	kay/kina when the endpoint is a person or household	sa opisina / kay Liza
recipient	sa	kay/kina	sa guro / kay Liza
beneficiary	para sa	para kay/kina	para sa bata / para kay Liza

The patient row needs an honest qualification. Filipino verbs select different participant frames, especially with people. Do not mechanically replace ng + common noun with ni + name. Ni normally marks a named non-pivot actor or possessor, while many actor-voice predicates relate a personal endpoint with kay, as in tumawag kay Liza. A patient-voice verb is often the natural way to make an affected named person the pivot.

The actor pivot takes ang, si, or sina

Nagluto ang ama ng lugaw para sa mga bata.

The father cooked rice porridge for the children.

Bumili si Teresa ng prutas sa palengke.

Teresa bought fruit at the market.

Nag-ayos sina Mila at Ruben ng mga upuan bago ang pulong.

Mila and Ruben arranged the chairs before the meeting.

The verbs nagluto, bumili, and nag-ayos all select the actor as pivot. Common ang ama, singular personal si Teresa, and plural personal sina Mila at Ruben express the same grammatical status through different marker series.

Actor voice does not mean that the actor must immediately follow the verb. Short pronouns, particles, a patient phrase, or an adverb can intervene. The marker identifies the pivot even when order changes.

Kumain ng mainit na sopas ang bata pagkatapos maglaro.

The child ate hot soup after playing.

Ang bata remains the actor pivot although ng mainit na sopas comes first. Reading by English SVO position would reverse the participants.

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With an actor-voice verb, find the doer before translating. Mark a common-noun actor with ang and a named actor with si/sina, wherever the phrase happens to occur.

The core patient usually takes ng

The thing eaten, bought, written, built, or prepared commonly appears as a non-pivot ng phrase.

Sumulat ang mga estudyante ng liham sa punong-guro.

The students wrote a letter to the principal.

Gumawa si Omar ng bagong estante para sa kusina.

Omar made a new shelf for the kitchen.

These ng patients are readily interpreted as new or nonspecific. That reading is frequent because actor voice keeps attention on the actor's activity. It is not a fixed meaning of ng.

Bumili si Cora ng bisikletang iyon mula sa kapitbahay niya.

Cora bought that bicycle from her neighbor.

The demonstrative iyon makes the bicycle specific and identifiable, yet it remains ng-marked because actor-voice bumili keeps Cora as pivot. Specificity does not by itself license ang after an actor-voice verb.

If a particular patient is the discourse center, patient voice is often more natural. That is a voice choice, not a simple marker substitution.

Locations, destinations, and recipients take sa

Nagtrabaho ang kapatid ko sa klinika buong gabi.

My sibling worked at the clinic all night.

Nagpadala si Ema ng kopya sa tanggapan.

Ema sent a copy to the office.

Sa klinika is a location; sa tanggapan is a destination. English may use at or to, but Filipino uses the broader oblique marker sa.

With a singular personal name, the corresponding oblique marker is kay.

Tumawag si Joel kay Nena bago magtanghali.

Joel called Nena before noon.

The actor pivot is si Joel. The person contacted is construed as the endpoint of actor-voice tumawag and takes kay Nena. Patient voice offers a different organization: Tinawagan ni Joel si Nena.

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Use ng for a core thing affected or produced, and sa/kay/kina for locations, endpoints, and recipients. The verb's established participant frame decides the boundary; English “object” is too broad.

A controlled comparison with patient voice

Nagbukas si Ivo ng bintana bago matulog.

Ivo opened a window before going to sleep.

Binuksan ni Ivo ang bintana bago matulog.

Ivo opened the window before going to sleep.

The completed event can be essentially the same. Actor-voice nagbukas selects si Ivo and leaves the patient as ng bintana. Patient-voice binuksan selects ang bintana and changes the named actor to ni Ivo.

The English translations show a likely discourse contrast, but English active versus passive is not the analysis. Both Filipino clauses are ordinary predicate-initial clauses; patient voice need not demote or omit the actor as an English passive does.

Changing only the markers would be ungrammatical. Voice morphology and participant marking form one construction.

Aspect stays separate from marker choice

Actor voice has completed, incompleted, and contemplated forms. The actor remains pivot throughout the paradigm.

Aspect	Example predicate	Participant marking
completed	bumili	ang/si actor + ng patient
incompleted	bumibili	ang/si actor + ng patient
contemplated	bibili	ang/si actor + ng patient

Bibili ang kapitbahay namin ng pintura bukas.

Our neighbor will buy paint tomorrow.

Future time comes from contemplated aspect plus bukas. The marker pattern follows actor voice, not English future tense.

Questions, negatives, and a short exchange

Negation and question particles do not reverse the marker map.

Hindi bumili ng karne si Omar dahil may ulam pa.

Omar did not buy meat because there is still food to go with rice.

Nagpadala ba si Mila ng kopya sa tanggapan?

Did Mila send a copy to the office?

—Sino ang nagdala ng meryenda? —Nagdala si Rosa ng tinapay at prutas.

—Who brought the snack? —Rosa brought bread and fruit.

In the answer, si Rosa is the actor pivot and ng tinapay at prutas is the coordinated non-pivot patient. The predicate comes first even though English begins with the actor.

Common Mistakes

Reversing actor and patient markers

❌ Bumili ng tindera ang tinapay kaninang umaga.

Incorrect for the intended meaning — this marking makes bread the actor pivot and the vendor the thing bought.

✅ Bumili ang tindera ng tinapay kaninang umaga.

The vendor bought bread this morning.

Semantic plausibility helps reveal the marker reversal, but voice supplies the rule.

Marking a specific patient with ang while keeping actor voice

❌ Nagbasa si Carlo ang liham na iniwan mo.

Incorrect — nagbasa is actor voice, so its core patient cannot simply be changed to an ang pivot.

✅ Nagbasa si Carlo ng liham na iniwan mo.

Carlo read the letter you left.

The relative clause makes the letter identifiable; ng still marks its role. Alternatively, use patient voice: Binasa ni Carlo ang liham na iniwan mo.

Using ng for a destination

❌ Pumunta si Lea ng ospital pagkatapos ng trabaho.

Incorrect — the hospital is a destination, not a core patient.

✅ Pumunta si Lea sa ospital pagkatapos ng trabaho.

Lea went to the hospital after work.

Use sa for this nonpersonal destination.

Using ang before a personal name

❌ Nagluto ang Mara ng almusal para sa lahat.

Incorrect — a singular personal-name actor pivot takes si.

✅ Nagluto si Mara ng almusal para sa lahat.

Mara cooked breakfast for everyone.

The personal marker series replaces—not follows—the common-noun series.

Key Takeaways

Actor voice selects the actor as pivot: ang for common nouns, si for one name, and sina for a named group. Core patients commonly take ng, while locations, destinations, and recipients take sa or personal kay/kina. Specificity can enrich a ng phrase but does not change its grammatical role. To pivot the patient, change to an established patient-voice form and remap both participants.

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