Who did it doesn't matter: the passive and se

The language of institutions and news is built from sentences with no actor: 'documents are submitted by Friday', 'two people were detained', 'no smoking here'. Spanish has three different ways of doing this, and choosing between them is not a stylistic whim but the norm. For example: “Se necesita el certificado de empadronamiento para la solicitud” — The registration certificate is required for the application. A…

Updated September 1, 2026 · Lingofly

How it works

The language of institutions and news is built from sentences with no actor: 'documents are submitted by Friday', 'two people were detained', 'no smoking here'. Spanish has three different ways of doing this, and choosing between them is not a stylistic whim but the norm.

The ser passiveser plus a participle agreeing in gender and number: la solicitud fue rechazada, los documentos fueron enviados. The agent can be added with por: fue detenido por la policía. This is the exact twin of the English passive ('was rejected'), but a Spaniard almost never says it in conversation — it is the language of the newspaper and the protocol; out loud such a phrase sounds like a translation.

The se passive — what Spanish actually uses. The verb stands in the third person and agrees with the thing: se firma el contrato, se firman los contratos. Notices and instructions are written exactly this way: se alquila piso, se prohíbe fumar, aquí se habla ruso. There is no agent here and cannot be one: the moment a por appears, the construction breaks.

The impersonal se looks the same, but the verb is always singular and the person after it takes the preposition a: se detuvo a dos personas, se atiende al público por la mañana. The difference from the previous one is thin but testable: about things — the verb goes plural (se venden pisos); about people — singular and with a (se busca a los responsables).

And the fourth way, the most colloquial: third person plural with no subject. Me han robado la cartera, te llaman, han cancelado el vuelo. Who exactly — unknown and unimportant; English does the same with 'my wallet got stolen', 'they cancelled the flight'. In live speech this way crowds out all the others, and it is the one to start with.

Table

Who did it doesn't matter: the passive and se
constructionwhere it livesexamplemeaning
ser + participlenewspaper, protocolla ley fue aprobadathe law was passed
ser + participle + porwhen the agent is namedfue detenido por la policíahe was detained by the police
se + verb (about things)signs, instructionsse venden pisosflats for sale
se + singular verb + a (about people)bureaucracyse detuvo a dos personastwo people were detained
3rd-person pluralconversationme han robado el móvilmy phone got stolen
no se puede / está prohibidoa banaquí no se puede fumarno smoking here

By example

  • Se necesita el certificado de empadronamiento para la solicitud
    The registration certificate is required for the application
  • El detenido fue puesto en libertad por el juez
    The detainee was released by the judge
  • Aquí se atiende al público solo con cita previa
    Here you are seen by appointment only

How the rule settles in your head

A rule is not memorized from an explanation. It is memorized from an attempt to use it and a mistake — that is why the app delivers it mixed in with words, not as a separate lesson: it resurfaces exactly where you forgot it.

Frequently asked

Who did it doesn't matter: how does it work in Spanish?

The language of institutions and news is built from sentences with no actor: 'documents are submitted by Friday', 'two people were detained', 'no smoking here'. Spanish has three different ways of doing this, and choosing between them is not a stylistic whim but the norm.

What does it look like in an example sentence Spanish?

“Se necesita el certificado de empadronamiento para la solicitud” — The registration certificate is required for the application. A rule is easier to test on sentences like this than to memorize as a wording: what surfaces in conversation is the sentence.

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