Formal & Academic Passive (The 'Se' Particle)
se, the object becomes the subject, so the verb must match it in number (singular/plural).
Grammar Rule in 30 Seconds
The 'se' particle turns active verbs into passive ones, focusing on the action rather than the person performing it.
- Use 'se' with transitive verbs in the 3rd person: 'Vendem-se casas' (Houses are sold).
- The verb must agree with the subject: 'Aluga-se um carro' vs 'Alugam-se dois carros'.
- If the subject is missing, use the singular form: 'Vive-se bem aqui' (One lives well here).
Overview
Mastering the formal passive se, also known as the synthetic passive voice (voz passiva sintética), is a critical milestone for C1-level Portuguese. This structure is the backbone of formal, objective writing, allowing you to present information without specifying who performed the action. Its primary function is to achieve impersonality, making it essential in academic papers, legal documents, official reports, and news journalism.
The se particle effectively removes the agent (the doer of the action), shifting the reader's focus entirely onto the action or event itself.
Unlike the analytical passive (voz passiva analítica), which uses the verb ser plus a past participle (e.g., O relatório foi escrito), the se-passive is more concise and often considered more elegant in formal written Portuguese. While O relatório foi escrito is grammatically sound, a formal text would often prefer Escreveu-se o relatório (The report was written). This construction isn't just a stylistic flourish; it reflects a deep-seated preference in the language for agent suppression in contexts that demand authority and objectivity.
For advanced learners, understanding this structure is non-negotiable for producing sophisticated prose that meets professional and academic standards.
The core mechanism you must internalize is that in the se-passive, the logical object of the action becomes the grammatical subject. This promotion triggers a crucial rule: the verb must agree in number (singular or plural) with this new subject. For example, in Discutiu-se o plano (The plan was discussed), o plano is the singular subject, so the verb is singular.
In Discutiram-se os planos (The plans were discussed), os planos is the plural subject, and the verb must follow suit. Grasping this principle of verb agreement is the key to unlocking this essential formal structure.
How This Grammar Works
se can perform two very different, often confused, functions in impersonal sentences. The distinction between them determines the entire structure of your sentence, especially verb conjugation. Your ability to differentiate them is a hallmark of C1 proficiency.Partícula Apassivadora)se of the true synthetic passive voice. Its job is to create a passive sentence by promoting the direct object to the role of subject. This can only happen with transitive direct verbs (verbos transitivos diretos)—verbs that connect to their object without a preposition (e.g., fazer, ver, analisar, escrever, publicar).Vende-se o apartamento.(The apartment is for sale.)o apartamentois the singular subject, sovendeis singular.Vendem-se os apartamentos.(The apartments are for sale.)os apartamentosis the plural subject, sovendemis plural.
se absorbs the unknown agent (someone), and the noun that follows dictates the verb form. This is the structural equivalent of saying Os apartamentos são vendidos.Índice de Indeterminação do Sujeito)se. It's used when you cannot promote a direct object to a subject, either because there isn't one or because it's preceded by a preposition. This se simply signals that the subject is unknown, generic, or irrelevant (“one,” “they,” “people”).- Transitive Indirect Verbs (verbs requiring a preposition, like
precisar de,gostar de,tratar-se de). - Intransitive Verbs (verbs that don't take an object, like
viver,morrer,chegar). - Linking Verbs (
verbos de ligação, likeserorestar, e.g.,É-se feliz aqui).
Precisa-se de funcionários.(Employees are needed.)de funcionáriosis a prepositional object, not a subject. The verb must be singular.Vive-se bem em Lisboa.(One lives well in Lisbon.)viveris intransitive. The verb is singular.
partícula apassivadora) | Index of Subject Indetermination (índice de indeterminação do sujeito) |ver, fazer, comprar, analisar) | Transitive Indirect, Intransitive, Linking Verbs (e.g., precisar de, viver, ser) |Analisou-se o documento. (The document was analyzed.) | Trata-se de um caso complexo. (It's a complex case.) |Analisaram-se os documentos. (The documents were analyzed.) | Trata-se de casos complexos. (They are complex cases.) |Formation Pattern
se is functioning as a passivizing particle or an index of indetermination.
Verb (3rd p. sing/pl) + se + Subject (Patient)
Os pesquisadores observaram os fenômenos.
Os pesquisadores).
os fenômenos) to the subject position.
observar) to agree with the new plural subject: observaram.
se. The placement (clisis) depends on regional preference and sentence structure.
Se observaram os fenômenos.
Observaram-se os fenômenos.
se-passive) | Analysis |
A comissão aprovou a nova lei. | Aprovou-se a nova lei. (EP) | a nova lei (singular) -> aprovou (singular) |
O jornal publicou os resultados. | Se publicaram os resultados. (BP) | os resultados (plural) -> publicaram (plural) |
Alguém constrói edifícios naquela área. | Constroem-se edifícios naquela área. | edifícios (plural) -> constroem (plural) |
não, nunca), question words (quando, quem), and certain adverbs (já, sempre) attract the pronoun to a position before the verb (próclise). For example, Não se observaram os fenômenos. is correct in both dialects.
Verb (3rd p. sing) + se + (Prepositional Complement / Adverb)
Aqui, trabalha-se muito. | trabalhar is intransitive. The verb must be singular. |
Fala-se de política em todo o lado. | falar de requires a preposition. The verb must be singular. |
Obedece-se aos sinais de trânsito. | obedecer a requires a preposition. The verb must be singular. |
se is followed by a preposition (de, a, em, com, por), you are dealing with an indeterminate subject, and the verb must be singular. This is a reliable shortcut.
When To Use It
se-passive is only half the battle. At the C1 level, you need to know when and why to deploy it for maximum stylistic effect. It is primarily a feature of the written language or highly formal speech.- Academic & Scientific Writing: This is the most common context. It is the standard way to report methods, results, and conclusions with objectivity. Instead of
Nós concluímos que...(We concluded that...), you writeConcluiu-se que...(It was concluded that...). It detaches the finding from the researcher, presenting it as a neutral fact. Utilizaram-se três métodos de análise.(Three methods of analysis were used.)Verificou-se uma correlação positiva entre as variáveis.(A positive correlation between the variables was verified.)
- Legal and Official Documents: Laws, regulations, and contracts are filled with this structure. It conveys authority and universality, as the rule applies to everyone and is not the command of a single person.
Proíbe-se o fumo neste estabelecimento.(Smoking is prohibited in this establishment.)Revogam-se as disposições em contrário.(Contrary provisions are hereby revoked.)
- Formal Instructions and Public Notices: You'll see this on signs and in manuals. It's more formal and less direct than an imperative command.
Vendem-se casas.(Houses for sale.)Dão-se explicações no balcão de informações.(Information is given at the information desk.)
- News Reporting: Journalists use it to report events neutrally, especially when the agent is unknown or less important than the event itself.
Divulgaram-se os nomes dos vencedores.(The names of the winners were released.)Encontrou-se uma solução para o impasse político.(A solution to the political impasse was found.)
se-passive when the process, result, or rule is more important than who performed the action. It is a powerful tool for achieving a detached, authoritative, and sophisticated tone.Common Mistakes
se. Here are the most frequent errors and how to avoid them.se as a generic “impersonal” marker and forget to perform subject-verb agreement in the passive construction.- Incorrect:
*Vende-se apartamentos. - Correct:
Vendem-se apartamentos. - Why?
Apartamentosis the plural subject of the sentence. The verb must bevendem. Think of it asApartamentos são vendidos.
- Incorrect:
*Analisou-se os dados. - Correct:
Analisaram-se os dados. - Why?
Os dadosis a plural subject. The verb must beanalisaram.
se is an index of subject indetermination.- Incorrect:
*Precisam-se de novos programadores. - Correct:
Precisa-se de novos programadores. - Why? The verb is
precisar de, a transitive indirect verb. The phrasede novos programadoresis a prepositional object, not a subject. There is nothing for the verb to agree with, so it must remain singular.
- Incorrect:
*Tratam-se de casos sérios. - Correct:
Trata-se de casos sérios. - Why?
Tratar-se deis a fixed impersonal expression. The verb is always singular, regardless of whether the noun that follows is singular or plural.
se-passive in Informal SpeechAnalisou-se o filme ontem à noite to a friend.- Unnatural:
Comprou-se um carro novo.(A new car was bought.) - Natural:
Comprámos um carro novo.(We bought a new car.) orComprei um carro novo.(I bought a new car.) or, especially in BP,A gente comprou um carro novo.(We bought a new car.)
Real Conversations
This grammar truly lives in formal contexts. Here’s how you'll see it used in the real world.
1. Excerpt from a Work Email
This email discusses the results of a marketing campaign. Notice the objective, agentless tone.
Assunto: Relatório de Performance - Campanha de Verão
Caros colegas,
Seguem os resultados da campanha de verão. Analisaram-se as métricas de engajamento e verificou-se um aumento de 15% na taxa de conversão. Discutir-se-ão as implicações destes dados na nossa reunião trimestral. Recomenda-se a leitura atenta do relatório em anexo.
(Translation: Attached are the results of the summer campaign. The engagement metrics were analyzed and a 15% increase in the conversion rate was verified. The implications of this data will be discussed in our quarterly meeting. Careful reading of the attached report is recommended.)
2. Snippet from an Academic Paper
This is from the methodology section of a hypothetical linguistics study.
Para este estudo, recorreu-se a um corpus de textos jornalísticos publicados entre 2020 e 2022. Selecionaram-se artigos de três jornais de grande circulação e procedeu-se à sua análise com software de processamento de linguagem natural. Buscou-se, com isso, identificar padrões de uso da voz passiva.
(Translation: For this study, a corpus of journalistic texts published between 2020 and 2022 was used. Articles from three major newspapers were selected and their analysis was carried out using natural language processing software. The goal was to identify usage patterns of the passive voice.)
3. Public Notice (on a University Library Door)
AVISO
1. Pede-se silêncio absoluto nesta área de estudo.
2. Não se permite a entrada de alimentos ou bebidas.
3. Os livros consultados não se devem arrumar nas prateleiras; deixam-se nos carrinhos designados.
(Translation: 1. Absolute silence is requested in this study area. 2. Food or drink are not permitted. 3. Consulted books should not be returned to the shelves; they are to be left on the designated carts.)
Quick FAQ
ser + participle) instead?Grammatically, yes. Os relatórios foram analisados is perfectly correct. However, in formal and academic writing, the se-passive (Analisaram-se os relatórios) is often considered more concise, elegant, and idiomatic. While the analytical passive is common in speech and journalism, mastering the synthetic passive is key for high-level formal writing.
Vende-se casas. Is this correct?This is a very common colloquial error, but it is considered grammatically incorrect in standard Portuguese. Since casas is plural, the grammatically correct form is Vendem-se casas. The singular form appears because speakers mistakenly treat vende-se as a fixed, invariable block meaning “for sale,” but prescriptively, the verb must agree with the subject.
se-passive sentence? For example, can I say Analisaram-se os dados pelos cientistas?No, never. The entire purpose of the voz passiva sintética is to suppress the agent completely. If you want to mention the agent, you must use the analytical passive voice: Os dados foram analisados pelos cientistas.
trata-se de always singular? Even if it's about multiple things?Yes, always. This is a classic example of se as an index of subject indetermination with a transitive indirect verb. The phrase de... is a prepositional object, not a subject. Therefore, the verb never changes. It's Trata-se de um problema and also Trata-se de vários problemas.
Passive Se Formation
| Subject | Verb (3rd Person) | Particle | Example |
|---|---|---|---|
|
Singular
|
Vende
|
se
|
Vende-se o carro
|
|
Plural
|
Vendem
|
se
|
Vendem-se os carros
|
|
Impersonal
|
Fala
|
se
|
Fala-se muito
|
Meanings
The 'se' particle is used to form the synthetic passive voice, where the subject undergoes the action, or the impersonal voice, where the agent is unknown or irrelevant.
Synthetic Passive
The subject receives the action.
“Vendem-se apartamentos.”
“Fazem-se traduções.”
Impersonal Passive
General statements where no specific subject exists.
“Vive-se bem no Brasil.”
“Precisa-se de funcionários.”
Reference Table
| Form | Structure | Example |
|---|---|---|
|
Affirmative
|
Verb + se + Subject
|
Aluga-se casa
|
|
Negative
|
Não + se + Verb + Subject
|
Não se aluga casa
|
|
Plural
|
Verb (pl) + se + Subject (pl)
|
Alugam-se casas
|
|
Impersonal
|
Verb (sg) + se
|
Vive-se bem
|
|
Question
|
Verb + se + Subject?
|
Aluga-se casa?
|
|
Past
|
Verb (past) + se
|
Alugou-se casa
|
Formality Spectrum
Aluga-se casa. (Real estate)
A casa está para alugar. (Real estate)
Tem casa pra alugar. (Real estate)
Casa vaga. (Real estate)
The Se Particle Map
Usage
- Formal Formal
- Objective Objective
Rules
- Agreement Agreement
- 3rd Person 3rd Person
Examples by Level
Vende-se casa.
House for sale.
Aluga-se quarto.
Room for rent.
Conserta-se relógio.
Watch repair.
Faz-se chave.
Key making.
Vendem-se carros aqui.
Cars are sold here.
Alugam-se apartamentos.
Apartments are for rent.
Aceitam-se cartões.
Cards are accepted.
Fazem-se cópias.
Copies are made.
Fala-se muito sobre a crise.
There is much talk about the crisis.
Precisa-se de ajuda.
Help is needed.
Vive-se bem nesta cidade.
One lives well in this city.
Espera-se uma solução.
A solution is expected.
Não se permitem entradas após as dez.
Entries are not allowed after ten.
Discutem-se os problemas atuais.
Current problems are being discussed.
Requerem-se conhecimentos de inglês.
English knowledge is required.
Acredita-se que a economia vai melhorar.
It is believed the economy will improve.
Observam-se tendências de mercado distintas.
Distinct market trends are observed.
Conclui-se que os dados são insuficientes.
It is concluded that the data is insufficient.
Procuram-se soluções alternativas.
Alternative solutions are being sought.
Reconhecem-se os esforços da equipe.
The team's efforts are recognized.
Depreende-se do texto uma crítica social.
A social critique is inferred from the text.
Postulam-se novas teorias físicas.
New physical theories are postulated.
Verificam-se anomalias no sistema.
Anomalies are verified in the system.
Entende-se por justiça a equidade.
Justice is understood as equity.
Easily Confused
Learners confuse passive se (object receives action) with reflexive se (subject does action to self).
Learners don't know when to use singular or plural.
Placement of 'se' in Brazilian vs European Portuguese.
Common Mistakes
Vende-se casas
Vendem-se casas
Se vende casa
Vende-se casa
Aluga-se apartamentos
Alugam-se apartamentos
Precisa-se de funcionários
Precisam-se de funcionários
Faz-se bolos
Fazem-se bolos
Aceita-se cartões
Aceitam-se cartões
Fala-se línguas
Falam-se línguas
Vivem-se bem aqui
Vive-se bem aqui
Trabalham-se muito
Trabalha-se muito
Precisa-se de pessoas
Precisam-se de pessoas
Considera-se os dados
Consideram-se os dados
Observa-se as tendências
Observam-se as tendências
Conclui-se os estudos
Concluem-se os estudos
Verifica-se as anomalias
Verificam-se as anomalias
Sentence Patterns
___-se ___ aqui.
___-se muito sobre ___.
___-se que ___.
___-se ___ para ___.
Real World Usage
Aluga-se apartamento.
Procura-se profissional.
Fala-se em crise.
Conclui-se que...
Aceitam-se cartões.
Conserta-se calçado.
Check the subject
Don't over-use
Impersonal is safe
Regional differences
Smart Tips
Use the passive se to sound professional.
Use the passive se to focus on the role.
Use the passive se to maintain objectivity.
Use the impersonal passive.
Pronunciation
Se
Pronounced like 'see' in English but with a softer 's'.
Formal statement
Aluga-se casa ↘
Falling intonation for declarative sentences.
Memorize It
Mnemonic
Se is the key to being formal; if the subject is many, the verb must be plenty.
Visual Association
Imagine a shop sign flipping from 'I sell' to 'Se vende' (It is sold).
Rhyme
If the subject is plural, make the verb plural too, that's what the passive se will do.
Story
Maria wanted to sound professional. She stopped saying 'I need a job' and started saying 'Precisa-se de um emprego'. Everyone was impressed by her formal tone.
Word Web
Challenge
Find three signs in your city or online that use 'se' and explain why they are passive.
Cultural Notes
Proclisis (se before verb) is more common in speech.
Enclisis (se after verb) is strictly preferred in formal writing.
Used to maintain objectivity in research.
Derived from the Latin 'se', a reflexive pronoun.
Conversation Starters
Como se diz 'hello' em português?
O que se pode fazer nesta cidade?
Como se resolve este problema?
Que conclusões se podem tirar deste estudo?
Journal Prompts
Common Mistakes
Test Yourself
___-se casas aqui. (vender)
Find and fix the mistake:
Aluga-se apartamentos.
___-se bem aqui. (viver)
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Help is needed.
Answer starts with: Pre...
Which is more formal?
___-se que a economia vai melhorar. (acreditar)
Find and fix the mistake:
Trabalham-se muito nesta empresa.
Score: /8
Practice Exercises
8 exercises___-se casas aqui. (vender)
Find and fix the mistake:
Aluga-se apartamentos.
___-se bem aqui. (viver)
se / aqui / vendem / carros
Help is needed.
Which is more formal?
___-se que a economia vai melhorar. (acreditar)
Find and fix the mistake:
Trabalham-se muito nesta empresa.
Score: /8
Practice Bank
12 exercises___-se várias falhas no sistema. (Several flaws were noted.)
___-se de novos voluntários. (New volunteers are needed.)
How do you say 'It is concluded that...'?
Compram-se ouro e prata.
Conserta-se relógios antigos.
Classify the sentences.
dúvidas / Tiram-se / aqui
Errors were found.
Select the correct header.
___-se (Determinar - Past) os novos parâmetros.
Não alugam-se casas.
Which sentence must REMAIN singular?
Score: /12
FAQ (8)
No, only transitive verbs for the synthetic passive, and intransitive verbs for the impersonal passive.
The verb must agree with the subject in the synthetic passive.
Yes, it's great for formal business emails.
It might sound a bit too formal or stiff.
Yes, placement of 'se' (proclisis vs enclisis) differs.
It's when there is no subject, like 'Vive-se bem'.
Put 'não' before the 'se'.
No, reflexive involves an agent acting on themselves.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Pasiva refleja
Placement of 'se' is more flexible in Spanish.
On
French uses a subject pronoun, Portuguese uses a particle.
Man
German uses a pronoun, Portuguese uses a particle.
Passive voice (rareru)
Japanese uses suffixes, Portuguese uses a particle.
Passive verb form
Arabic uses internal vowel changes.
Bei construction
Chinese uses a particle to mark the agent, Portuguese uses it to omit the agent.
Learning Path
Prerequisites
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