The values of se

C1 Los valores de se 49 / 49

In short

The little word se wears many hats. This lesson gathers all of them: reflexive, reciprocal, pronominal, anticausative, the two impersonal-style passives, the “spurious” se that replaces le/les, the accidental se, and the aspectual se. Reading se correctly means asking what job it is doing in the sentence.

The rule

There is no single translation of se. Identify it by the pattern around it.

1. Reflexive - the subject acts on itself (“himself / herself / themselves”): María se lava. Los niños se visten solos.
2. Reciprocal - plural subjects acting on each other: Ana y Luis se escriben. Se conocen desde hace años. (Add el uno al otro to disambiguate.)
3. Pronominal / inherent verbs - se is simply part of the verb, with no “self” meaning. Some verbs never drop it (arrepentirse, quejarse, atreverse); others change meaning with it: ir -> irse (to leave), dormir -> dormirse (to fall asleep), comer -> comerse (to eat up), acordar -> acordarse (to remember).
4. Anticausative - an inanimate subject changes state with no agent implied at all: La puerta se cerró con el viento. El motor se caló. Unlike the pasiva refleja, where somebody unnamed is doing it, here nobody is: Se cerraron las puertas a las nueve (someone closed them) vs La puerta se cerró sola (nobody did). The accidental se (value 8) is this pattern plus a dative.
5. Pasiva refleja - se + a 3rd-person verb that agrees with the patient (usually a thing); no agent is named: Se venden pisos. Se habla español aquí. Because pisos is plural, the verb is plural.
6. Impersonal se - se + a verb that is always 3rd singular, with no subject at all (“one / you / people”): Se vive bien aquí. En España se cena tarde. It stays singular even before a personal-a object: Se ayuda a los turistas.
7. The “spurious” se (se por le) - before lo/la/los/las, an indirect le/les becomes se: Le di el libro -> Se lo di. This se is not reflexive; it is just le in disguise.
8. Accidental se (se de involuntariedad) - presents an event as unplanned. Frame: se + me/te/le/nos/os/les + verb, and the verb agrees with the thing, not the person: Se me cayó el vaso. Se nos acabó la gasolina. The person is the “victim”, not the blamed agent.
9. Aspectual / ethical se (dativo aspectual) - an optional se that adds “the whole thing / all up” or personal involvement; the sentence still works without it: Se comió todo el pastel. Me leí el libro en una noche. The object has to be delimited - definite or quantified (el bocadillo, todo el pan, dos platos): Se comió el pan, never Se comió pan with this value.

Impersonal vs pasiva refleja - the key test. If the following noun is a thing that could be the subject, the verb agrees (Se venden casas, plural). If there is a personal a or no noun, it is impersonal and stays singular (Se ayuda a los niños; Se trabaja mucho).

Forms & patterns

The nine values at a glance:

#	Value of se	Example	Quick sense
1	Reflexive	Se lava.	himself / herself
2	Reciprocal	Se escriben.	each other
3	Pronominal / inherent	Se arrepiente; se fue.	part of the verb
4	Anticausative	La puerta se cerró.	it happened by itself
5	Pasiva refleja	Se venden pisos.	are sold (verb agrees)
6	Impersonal	Se vive bien.	one / people (3sg)
7	Spurious (le/les -> se)	Se lo di.	le before lo/la
8	Accidental	Se me cayó.	unplanned event
9	Aspectual / ethical	Se comió todo.	the whole thing

The accidental frame se + indirect pronoun + verb across persons:

Frame	English
Se me olvidó	I forgot
Se te olvidó	you forgot
Se le olvidó	he / she forgot
Se nos olvidó	we forgot
Se os olvidó	you (pl.) forgot
Se les olvidó	they forgot

Examples

Español	English
Ana se peina delante del espejo.	Ana combs her hair in front of the mirror.
Mis primos se escriben cada semana.	My cousins write to each other every week.
Al final se fue sin despedirse.	In the end he left without saying goodbye.
La lavadora se ha estropeado otra vez.	The washing machine has broken down again.
Aquí se venden sellos.	Stamps are sold here.
En España se cena muy tarde.	In Spain people have dinner very late.
Se lo di a mi hermano ayer.	I gave it to my brother yesterday.
Se comió toda la pizza él solo.	He ate the whole pizza by himself.

Common mistakes

Se me cayó read as “I fell” -> Se me cayó el vaso = “I dropped the glass” - the accidental se is not reflexive; el vaso is the subject and me marks the affected person.
Le lo di -> Se lo di - before lo/la/los/las the indirect le/les turns into se, not a reflexive.
Se vende pisos -> Se venden pisos - in the pasiva refleja the verb agrees with the plural patient.
Se ayudan a los turistas -> Se ayuda a los turistas - with a personal-a object the se is impersonal and the verb stays singular.
Comió todo el pastel when you mean “ate it all up” -> Se comió todo el pastel - the aspectual se adds the “finished it off” nuance English marks with “up”.
Arrepiento de eso -> Me arrepiento de eso - inherent verbs (arrepentirse, quejarse, atreverse) never appear without se.

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