Voz Passiva com Verbos Modais (pode ser feito)
modal + be + V3 para soar super natural e expressar possibilidades, deveres e conselhos de um jeito flexível. Pense em possibilidade, obrigação, conselho.
Grammar Rule in 30 Seconds
Use modal passives to focus on what needs to happen rather than who is doing it.
- Combine a modal (can, must, should) with 'be' and a past participle: 'It can be fixed.'
- For negatives, place 'not' immediately after the modal: 'It cannot be fixed.'
- In questions, move the modal to the front: 'Can it be fixed?'
Overview
Your order can be tracked em vez de We are tracking your order? Bem-vindo ao mundo da voz passiva com verbos modais. Soa elegante, soa oficial, mas na verdade é apenas uma forma de mudar o foco.can, must ou should, adicionamos camadas de possibilidade ou necessidade.How This Grammar Works
Você (herói) deve assinar (ação) o contrato (alvo). Mas e se o contrato for a estrela? É aí que entra a voz passiva.be como ponte. Finalmente, o particípio passado (V3) termina a ação. É um trabalho em equipe.Eu posso consertar isso e Isso pode ser consertado. Um fala da sua habilidade, o outro fala da solução.
Formation Pattern
can, must, should, etc.).
be (ela nunca muda!).
done, seen, written).
The file (Sujeito) + should (Modal) + be (ponte) + uploaded (V3).
not depois do modal: The file should not be uploaded. Para perguntas, o modal vai para a frente: Should the file be uploaded? É como LEGO; apenas encaixe as peças na ordem certa.
When To Use It
- Regras Oficiais:
Masks must be worn inside.(Não importa quem diz, apenas use a máscara!). - Instruções:
The battery should be charged for 2 hours. - Apps/Redes Sociais:
Your password can be reset here. - Conselhos Educados:
This mistake could be avoided.(Soa melhor do que culpar alguém diretamente). - Escrita Formal:
The results will be published next week.
Common Mistakes
- Esquecer o
be: Muita gente dizThe door must closed.Errado! Precisa da ponte:The door must be closed. - Usar a forma errada do verbo: Não use o infinitivo. É sempre o particípio:
It can be fixed(nãofix). - Confusão com
to: Modais comocanoumustnunca levamto. Nada deIt must to be done. - Confusão de Sujeito:
You can be sent the emailsignifica que você será enviado pelo correio! O correto éThe email can be sent to you.
be e seu V3.Contrast With Similar Patterns
- Passiva Normal:
The cake is eaten.(Fato presente). - Passiva Modal:
The cake can be eaten.(Possibilidade/Permissão). - Modal Ativa:
You can eat the cake.(Foco em você e na sua fome).
will é uma promessa, must uma ordem estrita.Quick FAQ
Posso usar by para dizer quem fez?
Sim! The song was written by Taylor Swift. Mas costumamos omitir se não for importante.
É só para escrita formal?
Não, muito usado em casa: This needs to be cleaned (geralmente com um suspiro).
can be sempre é permissão?
Não, também é possibilidade: It can be cold in London.
Qual o modal mais comum?
Should e must para regras; can para tecnologia; could para sugestões gentis.
Serve para entrevistas de emprego?
Com certeza! My skills can be applied to this role faz você parecer muito profissional.
Todos os verbos funcionam?
Não, verbos sem objeto como happen ou arrive não podem ser passivos.
2. Negative Contractions
| Full Form | Contraction | Usage |
|---|---|---|
|
cannot be
|
can't be
|
Common
|
|
should not be
|
shouldn't be
|
Common
|
|
must not be
|
mustn't be
|
Common (Prohibition)
|
|
could not be
|
couldn't be
|
Common
|
|
might not be
|
mightn't be
|
Rare
|
Modal Passive Structure
| Subject (Object) | Modal Verb | Auxiliary | Past Participle (V3) | Example |
|---|---|---|---|---|
|
The work
|
can
|
be
|
done
|
The work can be done.
|
|
The work
|
must
|
be
|
done
|
The work must be done.
|
|
The work
|
should
|
be
|
done
|
The work should be done.
|
|
The work
|
might
|
be
|
done
|
The work might be done.
|
|
The work
|
could
|
be
|
done
|
The work could be done.
|
|
The work
|
may
|
be
|
done
|
The work may be done.
|
Meanings
A grammatical construction used to express necessity, possibility, or permission regarding an object when the agent (the person doing the action) is unknown, unimportant, or obvious.
Possibility and Ability
Expressing that something is possible or that an object has the potential to be acted upon.
“The stars can be seen clearly tonight.”
“This problem could be solved with more time.”
Obligation and Necessity
Expressing that an action is required or mandatory for an object.
“Seatbelts must be worn at all times.”
“The bill has to be paid by Friday.”
Advice and Suggestions
Giving recommendations about what should happen to an object.
“The fruit should be washed before eating.”
“The room ought to be painted blue.”
Reference Table
| Modal | Exemplo Voz Ativa | Exemplo Voz Passiva | Significado |
|---|---|---|---|
|
can
|
You can fix this.
|
This `can be fixed`.
|
Possibilidade/Habilidade
|
|
could
|
They could repair it.
|
It `could be repaired`.
|
Possibilidade passada/Sugestão
|
|
should
|
You should finish the report.
|
The report `should be finished`.
|
Conselho/Recomendação
|
|
must
|
We must submit the form.
|
The form `must be submitted`.
|
Obrigação/Necessidade
|
|
may
|
Someone may deliver the package.
|
The package `may be delivered`.
|
Possibilidade formal
|
|
might
|
They might close the store.
|
The store `might be closed`.
|
Possibilidade incerta
|
|
will
|
The team will announce the news.
|
The news `will be announced`.
|
Ação futura (certa)
|
|
ought to
|
You ought to review the rules.
|
The rules `ought to be reviewed`.
|
Conselho forte/Recomendação
|
Espectro de formalidade
The assignment must be completed by the end of the business day. (Workplace)
The work should be finished today. (Workplace)
This needs to be done ASAP. (Workplace)
Get this finished, yeah? (Workplace)
Voz Passiva com Verbos Modais
Modais Comuns
- can possibilidade/habilidade
- should conselho/recomendação
- must obrigação/necessidade
- might/may possibilidade incerta
Usos Principais
- Unknown agent Quem fez? Não importa!
- Object focus O que aconteceu? (com algo)
- Formal tone Anúncios oficiais, regras
- Polite suggestions Conselho gentil
Etapas de Formação
- Subject (recebedor)
- Modal (can, should, etc.)
- be (sempre 'be')
- V3 (particípio passado)
Ativa vs. Passiva com Modais
Quando Usar Modal + Passiva?
O 'executor' da ação é conhecido ou importante?
Você quer enfatizar a ação ou seu resultado?
Você está dando conselhos ou instruções gerais?
Polidez ou formalidade são desejadas?
Passiva com Modal: Expressando Diferentes Significados
Possibilidade/Habilidade
- • `can be found`
- • `could be done`
- • `may be seen`
Obrigação/Necessidade
- • `must be submitted`
- • `should be completed`
- • `has to be approved`
Conselho/Recomendação
- • `should be reviewed`
- • `ought to be improved`
- • `could be considered`
Proibição/Impossibilidade
- • `cannot be entered`
- • `must not be touched`
- • `should not be ignored`
Exemplos por nível
It can be done.
It can be done.
The door must be closed.
The door must be closed.
Can it be fixed?
Can it be fixed?
The food should be hot.
The food should be hot.
The homework must be finished today.
The homework must be finished today.
The windows should be opened.
The windows should be opened.
This book can be borrowed from the library.
This book can be borrowed from the library.
The car cannot be parked here.
The car cannot be parked here.
The package might be delivered tomorrow.
The package might be delivered tomorrow.
All applications must be submitted online.
All applications must be submitted online.
The meeting could be cancelled due to the storm.
The meeting could be cancelled due to the storm.
Should the medicine be taken with food?
Should the medicine be taken with food?
The results will be published once the data has been verified.
The results will be published once the data has been verified.
Safety regulations must be strictly adhered to.
Safety regulations must be strictly adhered to.
The project ought to be completed by the end of the quarter.
The project ought to be completed by the end of the quarter.
Can any improvements be made to the current system?
Can any improvements be made to the current system?
The implications of this policy must be carefully considered.
The implications of this policy must be carefully considered.
It could be argued that the economy is recovering.
It could be argued that the economy is recovering.
The manuscript may be viewed only with special permission.
The manuscript may be viewed only with special permission.
Such behavior will not be tolerated in this establishment.
Such behavior will not be tolerated in this establishment.
The gravity of the situation can hardly be overstated.
The gravity of the situation can hardly be overstated.
Provision must be made for future contingencies.
Provision must be made for future contingencies.
The nuances of the text might be lost in translation.
The nuances of the text might be lost in translation.
It is imperative that the confidentiality of the source be maintained.
It is imperative that the confidentiality of the source be maintained.
Fácil de confundir
Learners often use the active form when they mean the passive, or vice versa.
Learners forget to add the modal when they want to express necessity.
Learners try to use 'get' with modals in formal writing.
Erros comuns
It can done.
It can be done.
It must be do.
It must be done.
Can be fixed it?
Can it be fixed?
It can is done.
It can be done.
The car should be wash.
The car should be washed.
It must not be open.
It must not be opened.
Should be the door locked?
Should the door be locked?
The bill has to be pay.
The bill has to be paid.
It might be being done.
It might be done.
The work can be finish by me.
The work can be finished by me.
It must be being considered.
It must be considered.
The law should be obey.
The law should be obeyed.
Padrões de frases
The ___ must be ___ by ___.
It can be ___ easily.
Should the ___ be ___?
This might be ___ as a ___.
Real World Usage
All liquids must be placed in a clear plastic bag.
The shelf should be attached to the wall.
The invoice can be found in the attachment.
Your account might be suspended if you violate the rules.
The dough should be left to rise for an hour.
A new trade deal could be signed by Friday.
Foco no Recebedor da Ação
The issue can be resolved quickly.
Não Esqueça o "be"!
be antes do particípio passado. The food must be eatenestá certo, mas
The food must eatenestá errado! Sempre confira se o
be está lá. The email must be sent.
Deixe Mais Polido e Formal
You must complete this(Você deve completar isso), tente algo mais suave. Pense em um aviso no trabalho.
This form should be filled completely.
Notícias e Textos Acadêmicos Adoram!
declarações oficiais! Pense em um comunicado de imprensa. The new policy will be announced soon.
Confirme Seus V3
Eat-ate-eaten ou do-did-done. Um check rápido salva a sua pele. Por exemplo, se você quer dizer que uma tarefa foi feita. The homework must be done.
Smart Tips
Use 'could be' or 'might be' instead of 'you should'. It sounds less like you are giving orders.
Check if the subject is 'doing' the action. If not, insert 'be' and change the verb to V3.
Remember that 'must not be' means it is forbidden, not that it isn't necessary.
Think of the modal and 'be' as a sandwich, with the subject as the filling.
Pronúncia
Weak 'be'
In the phrase 'can be done', the word 'be' is usually unstressed and very short.
Modal Stress
Modals like 'must' or 'should' are often stressed to emphasize the necessity or advice.
Rising intonation for questions
Can it be fixed? ↗
Asking for confirmation or possibility.
Memorize
Mnemônico
Remember 'MBP': Modal, Be, Participle. It's the 'Most Beautiful Pattern'!
Associação visual
Imagine a giant robot (the Modal) holding a small bee (be) that is painting a finished checkmark (the Past Participle) on a box.
Rhyme
If a modal is what you see, just add a 'be' and a V3!
Story
A king (Modal) orders a servant (be) to complete a task (V3). The king doesn't care who the servant is, only that the task is 'done'.
Word Web
Desafio
Look around your room and find 3 things that 'must be done' (e.g., 'The bed must be made'). Write them down.
Notas culturais
British speakers often use 'ought to be' more frequently than Americans in formal advice.
Passive modals are used to avoid direct blame. Instead of 'You must fix this', a manager says 'This must be fixed' to sound less aggressive.
Public signs in English-speaking countries rely heavily on 'must be' and 'shall be' for authority.
Modal verbs in English come from Old English 'preterite-present' verbs, which originally had different meanings (e.g., 'can' meant 'to know'). The passive construction 'be + past participle' developed later as a way to express the patient of an action.
Iniciadores de conversa
What is one thing in your city that should be improved?
Can your favorite dish be made at home?
What rules must be followed in your office or school?
Do you think a human colony could be built on Mars?
Temas para diário
Erros comuns
Test Yourself
The report ______ by noon.
Find and fix the mistake:
The instructions should follow carefully.
Choose the correct sentence:
Arrange the words in the correct order:
All words placed
Click words above to build the sentence
Score: /4
Exercicios praticos
8 exercisesThe car ___ ___ ___ (must / repair) today.
Find and fix the mistake:
The documents can be send by email.
The windows ___ every month.
The contract ___ ___ ___.
'The problem could be solved.'
A: Can I take this book? B: No, it ___ ___ ___ to the library.
be / the / should / lights / off / turned
1. Must be done, 2. Might be done, 3. Should be done
Score: /8
Practice Bank
12 exercisesThe email ______ before sending.
New ideas must considering for the next phase.
Choose the correct sentence:
Translate into English: 'El software puede ser actualizado esta noche.'
Arrange these words into a sentence:
Match the phrases:
The message ______ immediately.
The documents can signed here.
Choose the correct sentence:
Translate into English: 'No se debe tocar el objeto de arte.'
Arrange these words into a sentence:
Match the active voice to the passive voice:
Score: /12
Perguntas frequentes (8)
Yes, but only in informal speech. For example, `It might get broken` is okay with friends, but in an essay, use `It might be broken`.
They follow the same rule: `The bill has to be paid` or `The law ought to be obeyed`. Just add `be + V3` after the 'to'.
Not always, but it is *more* formal than the active voice. We use it in daily life for rules and instructions.
Move the modal to the front: `Can it be done?` or `Should the room be painted?`. The `be` stays after the subject.
Yes! `The work can be done by a professional.` However, we usually use the passive when the person isn't important.
It is `must not be` (prohibition) or `doesn't have to be` (lack of necessity). Be careful with the meaning shift!
Yes! `The package will be delivered tomorrow.` It follows the exact same pattern as other modals.
Because modal verbs are always followed by the base form of a verb. The base form of 'is/am/are' is `be`.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
Se puede / Debe ser
English always uses 'be', while Spanish often uses the reflexive 'se'.
Peut être / Doit être
French past participles must agree in gender and number with the subject, unlike English.
Kann ... werden
German uses 'werden' instead of 'be' and has different word order.
〜れる / 〜られる
Japanese is morphological (verb endings) while English is periphrastic (auxiliary verbs).
Passive Voice (Internal Vowels)
Arabic uses vowel changes; English uses auxiliary verbs.
被 (bèi) + Modal
Chinese has no verb conjugation or 'be' auxiliary in this context.
Learning Path
Prerequisites
Learn These First
Voz Passiva: Formação Básica (be + V3)
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