Passive Se and Impersonal Se in Spanish

Short answer

Se plus a third-person verb is how Spanish usually avoids naming an agent: se venden pisos, se habla español. The full passive with ser plus participle exists but sounds formal and mostly appears in writing.

Level B2 · verbs, passive

The rule in full

Spanish avoids the true passive in speech. Three options, from most formal to most natural.

StructureExampleRegister
ser + participle (+ por)La casa fue construida por mi abuelo.formal, written
se + verb (pasiva refleja)Se construyó la casa en 1920.everyday
3rd person pluralDicen que va a llover.spoken

With ser + participle, the participle agrees: Las casas fueron construidas.

Pasiva refleja — the verb agrees with the thing:

  • Se vende un piso. / Se venden pisos.

Impersonal se — no subject at all, always singular, used with people:

  • En España se cena tarde. Aquí se habla español.

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