Catalan can place a bare infinitive after veure “see,” sentir “hear/feel,” and escoltar “listen to”: He sentit plorar un nen “I heard a child cry/crying.” The construction reports direct access to an event rather than merely a fact about it.
English may translate the same Catalan infinitive with a bare verb or an -ing form. Do not let that English choice decide the Catalan form: the real contrast is between presenting the perceived event as a unit and looking at its unfolding internal phase.
The core pattern
The perception verb is finite and agrees with the perceiver. The following infinitive is bare—never introduced by de—and does not agree with the participant performing its action.
Des del balcó veig jugar els nens a la plaça.
From the balcony I can see the children playing in the square.
Aquesta nit he sentit bordar un gos durant una bona estona.
Tonight I heard a dog barking for quite a while.
Ens vam quedar en silenci per escoltar cantar la soprano.
We stayed silent to listen to the soprano sing.
Forms such as veig, he sentit, and vam quedar carry person and time. Jugar, bordar, and cantar retain their infinitive spelling and lexical stress. The duration phrase in the second example shows that an infinitive does not automatically mean a completed event: barking can continue. What matters is that the barking is presented as the event perceived.
The perceived actor
The participant performing the infinitive's action can appear after the perception verb or, very commonly, after the two-verb sequence.
Vaig sentir la veïna tancar la porta.
I heard the neighbor close the door.
Vaig sentir tancar la porta a la veïna.
I heard the neighbor close the door.
The second sentence requires care: because tancar already has the direct object la porta, the actor a la veïna appears as a dative. With the first order, the actor can remain the direct object of sentir. This alternation is real, not an error, but the first order is often easier for learners because it keeps the actor beside the perception verb.
With an intransitive lower verb, the perceived actor straightforwardly behaves as the direct object of the perception verb:
Vaig sentir la teva cosina remugar tota l'estona.
I heard your cousin grumbling the whole time.
La vaig sentir remugar tota l'estona. / Vaig sentir-la remugar tota l'estona.
I heard her grumbling the whole time.
Both placements are standard in the periphrastic past. In la vaig sentir, the pronoun precedes the finite auxiliary vaig; in vaig sentir-la, it attaches to sentir, which is itself an infinitive inside the past construction. In a simple finite present, only preverbal placement is neutral: La sento remugar, not sento-la remugar.
When the lower verb is transitive, the two analyses seen with full noun phrases also appear with pronouns:
Li vaig sentir criticar l'entrenador. / La vaig sentir criticar l'entrenador.
I heard her criticize the coach. (dative pattern / accusative pattern)
The dative pattern corresponds to sentir criticar l'entrenador a la teva cosina; the accusative pattern corresponds to sentir la teva cosina criticar l'entrenador. The variants organize the same participants differently. At B1, the transparent accusative order with the full actor before the lower verb is the safest productive model.
Infinitive versus gerund
With a bounded event, the infinitive tends to present the event as a whole or as something that occurred. A gerund highlights an ongoing phase visible or audible at the moment of perception.
Vaig veure la Jana travessar el carrer.
I saw Jana cross the street. (the crossing presented as a whole event)
Vaig veure la Jana travessant el carrer.
I saw Jana while she was crossing the street. (an internal phase; completion is not asserted)
Des de la finestra el vèiem carregar totes les caixes a la furgoneta.
From the window we watched him load all the boxes into the van. (the loading event as a unit)
Quan vaig arribar, el vaig veure carregant una caixa a la furgoneta.
When I arrived, I saw him loading a box into the van. (already in progress)
The gerund is not simply the translation of English -ing. English says both “I saw her cross” and “I saw her crossing,” but also often uses “I heard a child crying” where Catalan naturally has Vaig sentir plorar un nen. Choose the viewpoint intended in Catalan.
Gerund placement can create attachment ambiguity: Vaig veure la Jana travessant el carrer most naturally makes Jana the person crossing, but in more complex sentences a gerund can seem to modify the perceiver or another participant. The infinitive construction is often clearer when the perceived event itself is central.
See simultaneous gerunds for the gerund's wider timing and subject constraints.
Infinitive versus que or com plus a finite verb
Veure/sentir + que + finite clause reports a proposition discovered, noticed, or heard. It does not necessarily present direct sensory access to the whole lower event.
He vist que la porta estava oberta i he entrat.
I saw that the door was open and went in.
He sentit que demà tancaran la carretera.
I've heard that they'll close the road tomorrow.
The second sentence can report information passed on by other people; no road-closing event has yet been heard. By contrast, He sentit tancar la porta reports the sound of the door-closing event itself.
Com + indicative can make the unfolding manner of a directly perceived event explicit:
He vist com tancava la porta sense fer soroll.
I saw how/as she closed the door without making a sound.
Mood depends on the asserted meaning of the finite clause. Positive Veig que plou asserts observed rain and takes indicative. Negative No veig que hi hagi cap problema commonly takes subjunctive because no problem is identified as a fact. “Perception verb” is therefore not a mechanical mood trigger.
Participles and weak pronouns
When the perceived actor is a preceding accusative pronoun in a compound tense, traditional agreement remains alive in certain varieties and often in (formal) usage:
L'he sentida cantar moltes vegades.
I've heard her sing many times. (feminine agreement, traditional and formal in many usages)
The invariable L'he sentit cantar is also widespread in contemporary speech. Agreement belongs to the participle sentit/sentida, not to the infinitive cantar. The guide's Central baseline uses agreement where it helps make a feminine antecedent explicit, while recognizing the invariable pattern.
Pronouns that belong inside the lower event remain attached to its infinitive unless a separately licensed climbing pattern applies: Vaig sentir la mare cridar-los “I heard the mother call them.” Do not confuse the perceived actor (la mare) with the object of cridar (-los).
Time, viewpoint, and the periphrastic past
Vaig veure means “I saw”; it is the auxiliary of the periphrastic past plus bare infinitive. Vaig a veure contains lexical present anar + a and means “I'm going to see/check” in an appropriate motion or immediate context.
Ahir vaig veure caure una branca just davant del cotxe.
Yesterday I saw a branch fall right in front of the car.
The simple past construction already supplies a bounded viewpoint. English “I was watching” would instead invite Catalan imperfect mirava or a progressive if the ongoing phase matters. No source-language form should be copied before deciding how the speaker views the event.
Mini-dialogue
—Has sentit arribar l'Èric aquesta nit? —Sí, l'he sentit obrir la porta cap a les dues, però no l'he sentit pujar l'escala. —Potser s'ha quedat a dormir al sofà.
—Did you hear Èric come home tonight? —Yes, I heard him open the door at about two, but I didn't hear him come up the stairs. —Maybe he slept on the sofa.
The repeated infinitives identify directly heard events. Accusative l' represents Èric as the perceived actor, while ha sentit carries tense and polarity.
Regional and register perspective
The core construction is shared across contemporary Catalan. Regional differences chiefly affect pronunciation, finite paradigms, clitic clusters, and the survival of participle agreement. Agreement such as l'he sentida cantar is maintained in certain dialects and often cultivated in (formal) writing; invariable l'he sentit cantar is widespread elsewhere. Oir “hear” is (literary or archaic) in most modern usage; neutral prose and conversation normally use sentir. Escoltar adds deliberate attention and should not replace sentir for an involuntary sound merely because English has “listen.”
Common Mistakes
1. Inserting de before the perception infinitive.
❌ He sentit de plorar un nen.
Incorrect—the direct perception construction takes a bare infinitive.
✅ He sentit plorar un nen.
I heard a child crying.
2. Adding personal a to an ordinary accusative perceived actor.
❌ Vaig veure a la Marta sortir de l'edifici.
Nonneutral as an automatic transfer—Marta is the direct-object actor of intransitive sortir.
✅ Vaig veure la Marta sortir de l'edifici. / La vaig veure sortir.
I saw Marta leave the building. / I saw her leave.
3. Choosing a gerund automatically from English -ing.
❌ Vaig veure la Marta tancant la porta, de principi a fi.
Mismatched viewpoint—the gerund foregrounds an internal phase despite the explicit whole-event meaning.
✅ Vaig veure la Marta tancar la porta, de principi a fi.
I saw Marta close the door, from beginning to end.
4. Adding a to a completed periphrastic past.
❌ Ahir vaig a veure caure una branca.
Incorrect for a past perception—the a produces a different construction.
✅ Ahir vaig veure caure una branca.
Yesterday I saw a branch fall.
5. Attaching a weak pronoun after a simple finite perception verb.
❌ Sento-la cantar des del passadís.
Incorrect in a neutral statement—the pronoun precedes a simple finite verb.
✅ La sento cantar des del passadís.
I can hear her singing from the hallway.
Key Takeaways
Use veure, sentir, or escoltar + bare infinitive for a directly perceived event. The perceived actor normally behaves like an object and can be pronominalized; with a transitive lower verb, Catalan also has a dative pattern. Choose an infinitive for the event as a unit, a gerund for an internal ongoing phase, and a finite clause for propositional content or an explicitly unfolded event. Tense, agreement, and mood come from the finite structure, not from the English translation.
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