German Phrase
Du darfst keinen Blitz benutzen.
Meaning
The sentence means ‘You are not allowed to use a flash.’ It is a clear prohibition, often referring to a camera flash or any kind of bright light that could disturb others.
When to use
Use this phrase when you need to enforce a rule – for example, in a museum, a theater, a classroom, or any place where flash photography is prohibited.
✦Grammar Breakdown
DudarfstkeinenBlitzbenutzen.
Modalverb dürfen
‘darfst’ is the 2nd‑person singular present form of dürfen, which expresses permission or prohibition.
Negation with ‘kein’
‘keinen’ is the accusative masculine form of ‘kein’, used because ‘Blitz’ is a masculine noun and the verb ‘benutzen’ takes a direct object.
Akkusativobjekt
‘Blitz’ is the direct object of ‘benutzen’; therefore it appears in the accusative case.
Infinitiv am Satzende
With modal verbs, the infinitive verb (benutzen) is placed at the end of the clause.
🗨In Conversation
Darf ich den Blitz meiner Kamera einschalten?
May I turn on the flash of my camera?
Nein, du darfst keinen Blitz benutzen.
No, you may not use a flash.
✕Common Mistakes
Du darfst nicht Blitz benutzen.
Placing ‘nicht’ before the noun creates a wrong word order; the correct negation for a noun in the accusative is ‘keinen’.
Du darfst kein Blitz benutzen.
‘Kein’ must be declined to match the accusative masculine noun; ‘kein Blitz’ is nominative, not accusative.
Darfst du keinen Blitz benutzen?
In a prohibition the modal verb stays before the infinitive; swapping the order changes the meaning to a question.
↔Alternatives
Du darfst den Blitz nicht benutzen.
You must not use the flash.
Es ist dir nicht gestattet, den Blitz zu verwenden.
You are not permitted to use the flash.
Bitte benutze keinen Blitz.
Please do not use a flash.
Cultural Tip
In German signage, the construction ‘Darf nicht …’ is common for prohibitions, but in spoken language native speakers often prefer the shorter ‘Du darfst nicht …’ or ‘Kein … erlaubt’. Remember that ‘Blitz’ can refer to both a camera flash and a literal lightning strike, so context matters.