Portuguese Phrase
Você não pode usar o flash.
Meaning
This sentence tells someone that they are not allowed or are unable to use the flash. It can refer to a camera flash, a flash on a smartphone, or any device that emits a brief burst of light.
When to use
Use it when you need to enforce a rule (e.g., in a museum, theater, or classroom) or when you want to explain a technical limitation, such as a phone that doesn’t support flash.
✦Grammar Breakdown
Vocênãopodeusaroflash.
Pronoun (Você)
Second‑person singular pronoun used for formal or neutral address.
Negation (não)
Placed directly before the verb to negate the action.
Modal verb (pode)
Present tense of poder, meaning ‘can’ or ‘may’; it agrees with the subject.
Infinitive (usar)
Verb in its infinitive form follows a modal verb.
Definite article (o)
Masculine singular article that must agree with the noun flash.
Borrowed noun (flash)
A masculine loanword from English; keep the article ‘o’.
🗨In Conversation
Posso tirar foto com flash?
Can I take a picture with flash?
Você não pode usar o flash.
You cannot use the flash.
✕Common Mistakes
Você não pode usar flash.
Missing the definite article ‘o’ before the masculine noun ‘flash’.
Você não pode usar o flashes.
‘Flash’ is a loanword that stays singular; adding ‘-es’ is incorrect.
Você não pode usar o flash?
A question mark changes the sentence into a question; keep a period for a statement.
Você não pode usar o flashes.
Again, the noun does not pluralize; keep it singular.
↔Alternatives
Você não tem permissão para usar o flash.
You do not have permission to use the flash.
Não é permitido usar o flash.
It is not allowed to use the flash.
Não pode usar o flash.
You can’t use the flash.
Cultural Tip
In many Brazilian museums, churches, and concert halls, flash photography is strictly prohibited to protect artwork and avoid disturbing performances. When speaking Portuguese, remember that ‘flash’ is masculine, so you must use the article ‘o’ (o flash). In informal speech the subject ‘você’ is often dropped, but keeping it makes the sentence clearer and more polite in a rule‑setting context.