Verbos de percepción: ver, oír, escuchar, sentir | Spanish (Spain) Grammar

Perception verbs — ver, oír, escuchar, mirar, sentir, oler, tocar — describe what your senses pick up. In Spanish they share a small but distinctive grammar: they take direct objects (often human, and so often introduced by the personal a), they can be followed by an infinitive or a gerund to describe the perceived action, and the choice between the two is a real meaning distinction that English collapses with the -ing form. They also come in pairs that English doesn't quite split the same way — oír vs escuchar, ver vs mirar — and the difference matters.

The two perception pairs

Spanish distinguishes passive perception (what reaches your senses without effort) from active perception (what you deliberately attend to). English half-marks this distinction; Spanish marks it sharply.

Sense	Passive (reaches you)	Active (you attend to it)
sight	ver — to see	mirar — to look at, to watch
hearing	oír — to hear	escuchar — to listen to
touch	sentir — to feel	tocar — to touch
smell	oler — to smell (intransitive or transitive)	oler — same form, no separate "active" verb
taste	saber (a) — to taste (of)	probar — to try, taste deliberately

The active members (mirar, escuchar, tocar, probar) imply volition and effort. The passive ones (ver, oír, sentir, oler) describe what your senses pick up, deliberately or not. Veo el cuadro = I see the painting (it's in front of me). Miro el cuadro = I'm looking at the painting (I'm studying it).

Veo el mar desde mi ventana.

I can see the sea from my window. (passive — it's there in my field of vision)

Miro el mar todas las mañanas mientras desayuno.

I look at the sea every morning while I have breakfast. (active — I direct my attention)

Oigo a los vecinos discutir otra vez.

I can hear the neighbours arguing again. (passive — the sound reaches me)

Estoy escuchando un pódcast sobre historia romana.

I'm listening to a podcast about Roman history. (active — I'm tuned in)

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If English would naturally insert to (listen to, look at), Spanish almost always wants the active verb (escuchar, mirar) and the direct object follows with no preposition. The to / at is built into the verb itself.

Personal a with human direct objects

Perception verbs take direct objects. When that object is a specific person (or a personified entity, or a pet you're emotionally attached to), Spanish inserts the personal a before the object. This is the same rule that applies to all transitive verbs, but it matters constantly with perception because we look at, listen to, and feel people more often than we do things.

Vi a Marta en el supermercado esta mañana.

I saw Marta at the supermarket this morning.

¿Has visto al perro? Lleva un rato sin aparecer.

Have you seen the dog? He hasn't shown up for a while.

Escuché a mi padre cantar en la ducha.

I heard my father singing in the shower.

Sentí a alguien detrás de mí pero al girarme no había nadie.

I felt someone behind me but when I turned around there was no one there.

Note the contrast with non-human objects, where the a drops:

Vi una película muy buena anoche.

I saw a really good film last night. (no personal 'a' — the object is a thing)

Oí un ruido raro en el sótano.

I heard a strange noise in the basement. (no personal 'a')

Perception verb + infinitive vs + gerund

This is the heart of perception-verb grammar. Spanish has two complement structures after ver, oír, sentir, and they're not interchangeable in nuance:

Perception verb + a + person + infinitive — emphasises the whole event or the action as a discrete unit. The speaker witnessed the action from start to finish or as a self-contained occurrence.
Perception verb + a + person + gerund — emphasises the action in progress, captured mid-stream.

Both translate naturally as English -ing, which is why English speakers often can't tell which to use.

Vi a Juan cruzar la calle.

I saw Juan cross the street. (infinitive — I saw the whole crossing)

Vi a Juan cruzando la calle.

I saw Juan crossing the street. (gerund — I caught him mid-crossing)

The difference is sometimes subtle, but in clear cases the contrast is real:

Oí cantar al coro en el ensayo.

I heard the choir sing at the rehearsal. (whole performance)

Oí al coro cantando un Aleluya cuando pasé por la iglesia.

I heard the choir singing a Hallelujah as I went past the church. (caught mid-song)

Sentí caer la lluvia sobre la tienda de campaña.

I felt the rain falling on the tent. (the action as an event)

Sentí el corazón latiéndome a mil por hora.

I felt my heart pounding a mile a minute. (mid-action)

In practice, both constructions are very common, and the infinitive is the more frequent and unmarked choice when the perception is a single completed event. The gerund leans into the in-progress framing.

Word order: subject of the infinitive

A peculiar feature of Spanish perception structures is that the subject of the embedded infinitive (the person doing the seen / heard action) can come either before or after the infinitive, with the personal a preserved in front of them.

Vi a Juan correr por el parque.

I saw Juan run through the park.

Vi correr a Juan por el parque.

I saw Juan run through the park.

Both are correct. The second order — verb + infinitive + a + person — is especially common when the infinitive has no object of its own, or when the speaker wants to emphasise the action over the actor. With longer phrases, the subject often goes after to keep the infinitive close to the perception verb.

Oímos cantar a los pájaros al amanecer.

We heard the birds singing at daybreak. (action first, then who did it)

Vimos llegar a los novios en un coche antiguo.

We saw the bride and groom arrive in a vintage car.

Sentir: feel a sensation vs feel an emotion

Sentir covers three quite distinct domains:

Physical sensation — Sentí un escalofrío = I felt a chill. Sentí frío = I felt cold.
Perception of an event — Sentí caer algo en el tejado = I felt / sensed something fall on the roof.
Emotion — Siento mucho lo que pasó = I'm very sorry about what happened.

The emotion sense is also where sentirse (reflexive) comes in for "to feel a certain way": Me siento cansado = I feel tired. The non-reflexive sentir + direct object focuses on the sensation itself; the reflexive sentirse + adjective focuses on the speaker's state.

Siento un dolor agudo aquí, en el costado.

I feel a sharp pain here, in my side. (physical sensation, transitive)

Me siento muy cansada últimamente, debería ir al médico.

I've been feeling really tired lately, I should see a doctor. (state, reflexive + adjective)

Siento mucho no poder ir a la boda.

I'm really sorry I can't come to the wedding. (emotion — apology)

Oler: a smell verb that works both ways

Oler is special among perception verbs because it's both what the perceiver does and what the smelled thing does.

Oler + direct object — to smell something (transitive). Huelo el café = I smell the coffee.
Oler a + noun — to smell of / smell like (intransitive). Huele a café = it smells of coffee.

Huelo humo, ¿alguien está fumando?

I smell smoke — is someone smoking? (transitive — the speaker perceives smoke)

Vengo del bar y huelo a tabaco; voy a darme una ducha.

I've come from the bar and I smell of tobacco; I'm going to take a shower. (intransitive 'oler a' — the speaker carries the smell)

La casa huele a pan recién hecho.

The house smells of freshly baked bread.

¿Has olido esta colonia? Me la regaló mi madre.

Have you smelled this cologne? My mother gave it to me.

Oler is also wildly irregular in the present: huelo, hueles, huele, olemos, oléis, huelen. The o → hue with the silent h is unique among Spanish verbs.

Parecer: a perception verb of seeming

Parecer sits at the edge of the perception class — it doesn't describe a sense organ, but it describes how things appear. It often pairs with the other perception verbs in usage.

Parecer + adjective — to seem. Parece cansado = he seems tired.
Parecer + noun — to look like. Pareces un fantasma = you look like a ghost.
Parecerse a + person/thing — to resemble. Te pareces a tu madre = you look like your mother.
Parecer que + indicative — to seem that. Parece que va a llover = it seems it's going to rain.
Me parece que + indicative — I think / it seems to me. The everyday way to give an opinion.

Pareces agotado, ¿no has dormido bien?

You look exhausted, did you sleep badly?

Te pareces muchísimo a tu padre cuando ríes.

You look so much like your father when you laugh.

Me parece que están exagerando un poco.

I think they're exaggerating a bit.

¿Qué te parece si quedamos el viernes?

What do you say if we meet up on Friday? (a fixed conversational frame)

Common Mistakes

❌ Vi Marta en la calle.

Missing personal 'a' — perception verbs with a specific human direct object require 'a'.

✅ Vi a Marta en la calle.

I saw Marta on the street.

❌ Escucho a la radio cada mañana.

Adding personal 'a' incorrectly — 'la radio' is a thing, not a person, so no 'a'.

✅ Escucho la radio cada mañana.

I listen to the radio every morning.

❌ Estoy mirando una película interesante.

In peninsular Spanish, films are typically 'ver', not 'mirar'. Use 'mirar' only for shorter or more attentive looking.

✅ Estoy viendo una película interesante.

I'm watching an interesting film.

❌ Oí Juan llegar tarde.

Missing personal 'a' before the human subject of the infinitive.

✅ Oí a Juan llegar tarde.

I heard Juan come home late.

❌ Me siento triste por lo que pasó.

Correct grammatically, but for an apology Spanish uses 'sentir' (non-reflexive) + direct object.

✅ Siento mucho lo que pasó.

I'm really sorry about what happened.

❌ La cocina huele de ajo.

Wrong preposition — 'oler' meaning 'smell of / like' takes 'a', not 'de'.

✅ La cocina huele a ajo.

The kitchen smells of garlic.

❌ Me parezco que va a llover.

Confusing 'parecer' (it seems) with 'parecerse' (to resemble). For 'it seems to me' use the non-reflexive with a dative pronoun: 'me parece que'.

✅ Me parece que va a llover.

I think it's going to rain.

Key Takeaways

Spanish perception verbs come in passive/active pairs: ver / mirar, oír / escuchar, sentir / tocar. English's look at and listen to both fall on the active side.
Specific human objects of perception verbs take the personal a: vi a Marta, oí a los ni ños.
Perception verb + a + person + infinitive = saw / heard the whole event. + gerund = caught it mid-action.
The subject of the embedded infinitive can come before or after: vi a Juan correr = vi correr a Juan.
Sentir splits three ways: physical sensation, perception of an event, and emotion (often as an apology). Sentirse
- adjective is reserved for the speaker's emotional or physical state.
Oler a
- noun = "smell of / like"; oler
  - direct object = "smell (something)". Present is irregular: huelo, hueles, huele, olemos, oléis, huelen.
Parecer rides along with the perception verbs: parece cansado, te pareces a tu madre, me parece que llueve. Distinguish parecer (seem) from reflexive parecerse a (resemble).
In peninsular Spanish, films and TV are watched with ver, not mirar. Mirar is for focused, often shorter visual attention.

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