B2 Sentence Structure 7 min read Medium

Passive Voice: Focusing on the Action (`Voz Passiva`)

The passive voice uses ser or se to highlight the result of an action over the doer.

Grammar Rule in 30 Seconds

The passive voice shifts the focus from the doer to the action or the object receiving it.

  • Use 'ser' + past participle for analytical passive: 'O livro foi escrito por ele.'
  • Use the particle 'se' for synthetic passive: 'Alugam-se casas.'
  • Ensure the participle agrees in gender and number with the subject: 'As cartas foram enviadas.'
Object + (ser + participle) OR (verb + se) + Subject

Overview

The passive voice, or Voz Passiva in Portuguese, is a fundamental grammatical structure used to shift focus within a sentence. Instead of highlighting the agent (the one performing the action), it emphasizes the patient (the one receiving the action) or the action itself. This grammatical device is crucial for expressing objectivity, attributing responsibility vaguely, or when the agent is unknown or irrelevant.

Mastering the passive voice is essential for B2 learners to achieve a more sophisticated and nuanced expression in Portuguese, moving beyond simple active constructions.

Portuguese primarily employs two forms of the passive voice: the Voz Passiva Analítica and the Voz Passiva Sintética. The analytical passive uses an auxiliary verb, typically ser, followed by a past participle. The synthetic passive, conversely, utilizes the reflexive particle se alongside a verb.

Both forms serve the same ultimate purpose of reorienting sentence emphasis, but they are used in distinct contexts and carry subtle stylistic differences.

How This Grammar Works

The passive voice functions by transforming the direct object of an active sentence into the grammatical subject of the passive sentence. This transformation inherently reassigns thematic roles: what was once the receiver of the action becomes the focal point. The original subject, if mentioned, is relegated to an optional 'agent of the passive' phrase, often introduced by por or pelo/pela.
Consider the active sentence O aluno escreveu o ensaio (The student wrote the essay). Here, o aluno is the agent and focus. In its analytical passive form, O ensaio foi escrito pelo aluno (The essay was written by the student), o ensaio (the essay) becomes the subject, drawing attention to the outcome rather than the doer.
This shift allows for greater flexibility in structuring information, making the passive voice indispensable for academic, journalistic, and formal discourse.
The synthetic passive, on the other hand, typically omits the agent entirely, making it ideal for situations where the agent is unknown, intentionally obscured, or simply unimportant. When you see signs like Aluga-se casas (Houses for rent/Houses are rented), the focus is purely on the action (alugar) and the object (casas), with no mention of who is doing the renting.

Word Order Rules

Understanding the transformation from active to passive voice is key to applying it correctly. The core principle involves a subject-object inversion and the introduction of an auxiliary verb or the se particle.
Voz Passiva Analítica (Ser + Participle)
This structure directly parallels the English passive voice. The direct object of the active sentence becomes the new subject, the verb ser is conjugated to match the tense and person of the original active verb, and the main verb becomes a past participle that agrees in gender and number with the new subject.
  • Active: [Subject] + [Verb] + [Direct Object]
  • Passive: [Direct Object (new Subject)] + ser (conjugated) + [Past Participle] (agrees with new Subject) + por/pelo/pela + [Original Subject (Agent, optional)]
Example:
  • Active: O professor corrigiu a prova. (The professor corrected the exam.)
  • Passive: A prova foi corrigida pelo professor. (The exam was corrected by the professor.)
Voz Passiva Sintética (Se Passive)
This form is more concise and typically used when the agent is unknown or irrelevant. It uses the indefinite pronoun se attached to a verb, which then agrees in number with the grammatical subject that follows it. The agent is never expressed.
  • Passive: [Verb (3rd person singular/plural)] + se + [Grammatical Subject (Object of action)]
Example:
  • Aluga-se apartamento. (Apartment for rent/An apartment is rented.)
  • Alugam-se apartamentos. (Apartments for rent/Apartments are rented.)
Notice that the verb (aluga vs. alugam) changes to agree with the number of the noun (apartamento vs. apartamentos). The se here serves as an indicator of the passive voice, also known as a partícula apassivadora.

Formation Pattern

1
Forming the passive voice systematically ensures grammatical correctness. Each type follows a distinct, yet logical, pattern.
2
Voz Passiva Analítica: Ser + Past Participle
3
Identify the direct object of the active sentence. This will be your new subject.
4
Conjugate the auxiliary verb ser in the same tense and mood as the original active verb.
5
Use the past participle of the original main verb. This participle must agree in gender and number with the new subject.
6
Optionally, introduce the original subject (now the agent of the passive) using por or its contractions (pelo, pela, pelos, pelas).
7
Examples:
8
Active: Ele lê o livro. (He reads the book.)
9
Passive: O livro é lido por ele. (The book is read by him.)
10
Active: Nós fizemos a tarefa. (We did the homework.)
11
Passive: A tarefa foi feita por nós. (The homework was done by us.)
12
Ser Conjugation Examples (for passive voice, matching active tense):
13
| Tense/Mood | Ser (3rd Person Singular) | Ser (3rd Person Plural) |
14
| :-------------------- | :-------------------------- | :------------------------ |
15
| Presente do Indicativo | é | são |
16
| Pretérito Perfeito | foi | foram |
17
| Futuro do Presente | será | serão |
18
| Imperfeito | era | eram |
19
| Condicional | seria | seriam |
20
Past Participle Agreement:
21
| New Subject | Participle Ending (e.g., escrito) |
22
| :---------- | :---------------------------------- |
23
| Masculine Singular | -o (escrito) |
24
| Feminine Singular | -a (escrita) |
25
| Masculine Plural | -os (escritos) |\
26
| Feminine Plural | -as (escritas) |
27
Voz Passiva Sintética: Verb + se
28
Use the main verb in the third person (singular or plural).
29
Attach the particle se to the verb.
30
Ensure the verb agrees in number with the noun that follows it, which functions as the grammatical subject.
31
Examples:
32
Vende-se casa. (A house is sold/House for sale.)
33
Compram-se livros. (Books are bought.)
34
Construiu-se um novo prédio. (A new building was constructed.)
35
If the verb is followed by a singular noun, the verb is singular. If followed by a plural noun, the verb is plural. This is a crucial distinction that often trips up learners.

When To Use It

The choice to use the passive voice is often strategic, driven by the desire to highlight specific information or achieve a particular tone.
  • When the Agent is Unknown or Irrelevant: This is perhaps the most common reason. If you don't know who performed an action, or if the identity of the doer is unimportant, the passive voice is the most natural choice.
  • O meu carro foi roubado ontem. (My car was stolen yesterday.) – You don't know who stole it.
  • Português é falado em nove países. (Portuguese is spoken in nine countries.) – The specific people speaking it are irrelevant to the statement.
  • To Emphasize the Action or its Recipient: When the event itself, or the person/thing affected, holds more significance than the agent, the passive voice brings it to the forefront.
  • A decisão foi anunciada pela presidente. (The decision was announced by the president.) – The focus is on the announcement of the decision, not necessarily on the president.
  • Os resultados da pesquisa foram publicados na revista científica. (The research results were published in the scientific journal.) – The publication of the results is the key piece of information.
  • For Formality, Objectivity, and Impersonality: The passive voice lends itself well to formal writing, scientific reports, news articles, and official statements where an objective or impersonal tone is desired. It creates a sense of detachment, often used to avoid direct accusations or to present information as universally true.
  • Medidas de segurança foram implementadas após o incidente. (Security measures were implemented after the incident.) – Sounds more formal and objective than

Analytical Passive Formation (Ser + Participle)

Tense Auxiliary (Ser) Past Participle Example
Present
é / são
feito(a/s)
O bolo é feito.
Past (Pretérito)
foi / foram
feito(a/s)
O bolo foi feito.
Imperfect
era / eram
feito(a/s)
O bolo era feito.
Future
será / serão
feito(a/s)
O bolo será feito.
Conditional
seria / seriam
feito(a/s)
O bolo seria feito.
Perfect (Compound)
tem sido
feito(a/s)
O bolo tem sido feito.

Synthetic Passive (Verb + Se)

Subject Verb Particle Example
Singular
Vende
se
Vende-se casa.
Plural
Vendem
se
Vendem-se casas.

Meanings

The passive voice is used when the focus is on the object of an action rather than the subject performing it. It is essential for formal writing, news reports, and objective descriptions.

1

Analytical Passive

Focusing on the result of an action using the auxiliary verb 'ser'.

“O relatório foi finalizado.”

“As janelas foram abertas.”

2

Synthetic Passive

Using the particle 'se' to indicate a passive state, common in signs and general statements.

“Vendem-se apartamentos.”

“Precisa-se de funcionários.”

Reference Table

Reference table for Passive Voice: Focusing on the Action (`Voz Passiva`)
Form Structure Example
Affirmative
Subject + ser + participle
A casa foi pintada.
Negative
Subject + não + ser + participle
A casa não foi pintada.
Interrogative
Ser + subject + participle?
A casa foi pintada?
Synthetic
Verb + se + subject
Alugam-se casas.
Agent
Passive + por + agent
O livro foi escrito por ele.
Future
Subject + será + participle
O teste será feito.

Formality Spectrum

Formal
A casa foi vendida.

A casa foi vendida. (Real estate)

Neutral
Vendeu-se a casa.

Vendeu-se a casa. (Real estate)

Informal
Venderam a casa.

Venderam a casa. (Real estate)

Slang
Passaram a casa pra frente.

Passaram a casa pra frente. (Real estate)

Passive Voice Structure

Passive Voice

Analytical

  • Ser To be
  • Participle Past participle

Synthetic

  • Verb Verb
  • Se Particle

Examples by Level

1

O carro é lavado.

The car is washed.

2

A porta é aberta.

The door is opened.

3

O café é servido.

The coffee is served.

4

A lição é feita.

The lesson is done.

1

O livro foi lido por ela.

The book was read by her.

2

As chaves foram perdidas.

The keys were lost.

3

O jantar foi preparado.

The dinner was prepared.

4

As janelas foram fechadas.

The windows were closed.

1

Alugam-se apartamentos aqui.

Apartments are for rent here.

2

Precisa-se de ajuda.

Help is needed.

3

O relatório será enviado amanhã.

The report will be sent tomorrow.

4

As regras foram ignoradas.

The rules were ignored.

1

A decisão foi tomada pelo conselho.

The decision was made by the board.

2

O problema foi resolvido rapidamente.

The problem was solved quickly.

3

Muitas mudanças foram implementadas.

Many changes were implemented.

4

O contrato foi assinado ontem.

The contract was signed yesterday.

1

O projeto teria sido concluído se houvesse verba.

The project would have been completed if there were funds.

2

A proposta foi rejeitada, o que foi lamentado por todos.

The proposal was rejected, which was regretted by all.

3

As evidências foram analisadas minuciosamente.

The evidence was analyzed thoroughly.

4

Sabe-se que a economia está mudando.

It is known that the economy is changing.

1

Foi-nos comunicado que a reunião fora cancelada.

It was communicated to us that the meeting had been canceled.

2

Acredita-se que tais medidas sejam necessárias.

It is believed that such measures are necessary.

3

O manuscrito foi encontrado em condições precárias.

The manuscript was found in precarious conditions.

4

Têm-se observado um aumento na demanda.

An increase in demand has been observed.

Easily Confused

Passive Voice: Focusing on the Action (`Voz Passiva`) vs Reflexive vs. Passive

Both use 'se'.

Passive Voice: Focusing on the Action (`Voz Passiva`) vs Analytical vs. Synthetic

Both are passive.

Passive Voice: Focusing on the Action (`Voz Passiva`) vs Passive vs. Active

Learners often use active when passive is needed for formality.

Common Mistakes

O livro é lido por eu.

O livro é lido por mim.

Use the prepositional pronoun 'mim' after 'por'.

A casa é construído.

A casa é construída.

Gender agreement.

Os carros é lavado.

Os carros são lavados.

Number agreement.

O bolo foi comi.

O bolo foi comido.

Use the past participle, not the past tense.

Vende-se casas.

Vendem-se casas.

The verb must agree with the plural subject.

A carta foi escrita por ele.

A carta foi escrita por ele.

This is correct, but ensure the participle matches.

O jantar foi feito por ela.

O jantar foi feito por ela.

Correct, but ensure gender agreement.

Precisa-se de funcionários.

Precisa-se de funcionários.

This is correct, but learners often omit the 'de'.

A decisão foi tomada pelo conselho.

A decisão foi tomada pelo conselho.

Correct, but ensure 'pelo' is used.

O projeto será finalizado.

O projeto será finalizado.

Correct, but ensure future tense of 'ser'.

Foi-nos dito que a reunião foi cancelada.

Foi-nos dito que a reunião fora cancelada.

Use the pluperfect for past-in-the-past.

Acredita-se que ele é culpado.

Acredita-se que ele seja culpado.

Use subjunctive after 'acredita-se'.

O relatório foi lido por todos.

O relatório foi lido por todos.

Correct, but ensure agreement.

Têm-se observado mudanças.

Têm-se observado mudanças.

Correct, but ensure 'têm' has the circumflex.

Sentence Patterns

O/A ___ foi ___ por ___.

___-se ___ aqui.

Acredita-se que ___.

O ___ teria sido ___ se ___.

Real World Usage

News Headlines constant

Lei foi aprovada pelo congresso.

Classified Ads very common

Alugam-se quartos.

Job Interviews common

O projeto foi liderado por mim.

Technical Manuals very common

O botão deve ser pressionado.

Social Media occasional

Foto tirada por @usuario.

Food Delivery Apps common

Pedido foi entregue.

💡

Check the subject

Always identify the subject first to ensure the verb and participle agree.
⚠️

Don't overdo it

The passive voice can sound robotic if used too much. Use active voice for clarity.
🎯

Use 'se' for signs

If you are writing a sign or an ad, the synthetic passive is your best friend.
💬

Formal vs Informal

In Brazil, people often use 'a gente' + active voice instead of the passive voice in speech.

Smart Tips

Use the passive voice to maintain objectivity.

Eu fiz o relatório. O relatório foi feito.

Use the synthetic passive with 'se'.

Nós vendemos casas. Vendem-se casas.

Ensure the participle agrees with the subject.

As cartas foi enviado. As cartas foram enviadas.

Use the agent 'por' to specify who did the action.

A decisão foi tomada. A decisão foi tomada pelo conselho.

Pronunciation

/du/ or /da/

Participle endings

Ensure the '-do' or '-da' is clearly pronounced.

Formal statement

A casa foi vendida. ↘

Falling intonation for a declarative sentence.

Memorize It

Mnemonic

Remember: 'Ser' is the key, the participle must agree, and the focus is on the thing, not the person.

Visual Association

Imagine a spotlight moving from a person to an object. The person fades into the background, and the object glows. This is the passive voice.

Rhyme

Se o objeto é o foco da ação, o verbo 'ser' entra na composição.

Story

Once there was a cake. The cake was baked by the baker. The cake was eaten by the guests. The cake was enjoyed by everyone. The cake is the hero of the story, not the people.

Word Web

SerParticípioSeAgenteObjetoPassiva

Challenge

Look at 5 objects in your room and write a passive sentence for each (e.g., 'A luz é ligada').

Cultural Notes

The synthetic passive with 'se' is extremely common in advertisements and signs.

The analytical passive is slightly more common in formal writing than in Brazil.

Passive voice is the standard for objectivity in academic papers.

Derived from Latin passive voice constructions.

Conversation Starters

O que foi feito hoje?

Como as decisões são tomadas na sua empresa?

Acredita-se que o futuro será melhor?

O que tem sido discutido ultimamente?

Journal Prompts

Describe a project you completed using the passive voice.
Write a formal advertisement for a product using the synthetic passive.
Discuss a current event using passive constructions to maintain objectivity.
Reflect on a historical event using the passive voice.

Common Mistakes

Incorrect

Correct


Incorrect

Correct


Incorrect

Correct


Incorrect

Correct

Test Yourself

Fill in the blank with the correct form of 'ser'.

O livro ___ escrito por ele.

✓ Correct! ✗ Not quite. Correct answer: foi
Past tense is required.
Correct the sentence. Error Correction

Find and fix the mistake:

A casa foram pintadas.

✓ Correct! ✗ Not quite. Correct answer: A casa foi pintada.
Agreement error.
Choose the correct synthetic passive. Multiple Choice

___ casas aqui.

✓ Correct! ✗ Not quite. Correct answer: Vendem-se
Plural agreement.
Transform to passive. Sentence Transformation

O arquiteto desenhou a casa.

✓ Correct! ✗ Not quite. Correct answer: A casa foi desenhada pelo arquiteto.
Correct passive structure.
Is this sentence correct? True False Rule

Precisa-se de funcionários.

✓ Correct! ✗ Not quite. Correct answer: True
Correct synthetic passive usage.
Complete the dialogue. Dialogue Completion

A: O relatório foi enviado? B: Sim, ___.

✓ Correct! ✗ Not quite. Correct answer: foi enviado.
Correct participle agreement.
Build a sentence. Sentence Building

foi / a / tomada / decisão

✓ Correct! ✗ Not quite. Correct answer: A decisão foi tomada.
Correct word order.
Match the active to passive. Match Pairs

Match each item on the left with its pair on the right:

✓ Correct! ✗ Not quite. Correct answer: O livro foi lido por ele.
Correct tense and agreement.

Score: /8

Practice Exercises

8 exercises
Fill in the blank with the correct form of 'ser'.

O livro ___ escrito por ele.

✓ Correct! ✗ Not quite. Correct answer: foi
Past tense is required.
Correct the sentence. Error Correction

Find and fix the mistake:

A casa foram pintadas.

✓ Correct! ✗ Not quite. Correct answer: A casa foi pintada.
Agreement error.
Choose the correct synthetic passive. Multiple Choice

___ casas aqui.

✓ Correct! ✗ Not quite. Correct answer: Vendem-se
Plural agreement.
Transform to passive. Sentence Transformation

O arquiteto desenhou a casa.

✓ Correct! ✗ Not quite. Correct answer: A casa foi desenhada pelo arquiteto.
Correct passive structure.
Is this sentence correct? True False Rule

Precisa-se de funcionários.

✓ Correct! ✗ Not quite. Correct answer: True
Correct synthetic passive usage.
Complete the dialogue. Dialogue Completion

A: O relatório foi enviado? B: Sim, ___.

✓ Correct! ✗ Not quite. Correct answer: foi enviado.
Correct participle agreement.
Build a sentence. Sentence Building

foi / a / tomada / decisão

✓ Correct! ✗ Not quite. Correct answer: A decisão foi tomada.
Correct word order.
Match the active to passive. Match Pairs

Active: Ele leu o livro.

✓ Correct! ✗ Not quite. Correct answer: O livro foi lido por ele.
Correct tense and agreement.

Score: /8

Practice Bank

10 exercises
Complete the sentence. Fill in the Blank

As janelas _______ (limpar) toda semana.

✓ Correct! ✗ Not quite. Correct answer: são limpas
Translate to Portuguese using the passive voice. Translation

The book was written by a famous author.

✓ Correct! ✗ Not quite. Correct answer: O livro foi escrito por um autor famoso.
Which sentence is in the passive voice? Multiple Choice

Identify the passive structure:

✓ Correct! ✗ Not quite. Correct answer: O bolo foi comido.
Match the active sentence to its passive equivalent. Match Pairs

Match these pairs:

✓ Correct! ✗ Not quite. Correct answer: A: Ele faz o café | B: O café é feito por ele
Reorder for the future passive. Sentence Reorder

Arrange: [será] [A] [entregue] [encomenda] [amanhã]

✓ Correct! ✗ Not quite. Correct answer: A encomenda será entregue amanhã
Fix the participle agreement. Error Correction

As propostas foram aceito.

✓ Correct! ✗ Not quite. Correct answer: As propostas foram aceitas.
Synthetic passive check. Fill in the Blank

_______ (procurar) novos talentos para o show.

✓ Correct! ✗ Not quite. Correct answer: Procuram-se
Translate to Portuguese. Translation

English is spoken in many countries.

✓ Correct! ✗ Not quite. Correct answer: Fala-se inglês em muitos países.
Pick the correct formal passive. Multiple Choice

How do you say 'The laws were updated'?

✓ Correct! ✗ Not quite. Correct answer: As leis foram atualizadas.
Match the agent of the passive. Match Pairs

Match the noun to the correct preposition + article:

✓ Correct! ✗ Not quite. Correct answer: o professor | pelo professor

Score: /10

FAQ (8)

Use it when the action or the object is more important than the person doing it.

Yes, especially in formal writing and signs.

Just add 'não' before the verb 'ser'.

Yes, use 'será' + participle.

Analytical uses 'ser', synthetic uses 'se'.

You must match the gender and number of the subject.

Very similar, yes.

Yes, it sounds professional.

Scaffolded Practice

1

1

2

2

3

3

4

4

Mastery Progress

Needs Practice

Improving

Strong

Mastered

In Other Languages

Spanish high

Voz pasiva

Agreement rules are nearly identical.

French high

Voix passive

French does not use the 'se' synthetic passive in the same way.

German moderate

Passiv

German uses 'werden' instead of 'ser'.

Japanese low

Ukemi (受身)

Japanese passive often implies a negative impact on the subject.

Arabic low

Al-Mabni lil-Majhool

Arabic passive is morphological, not auxiliary-based.

Chinese low

Bei-zi ju

Chinese passive is strictly particle-based.

Learning Path

Prerequisites

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