Verbotene Dinge: So benutzt du Mustn't (darf nicht)
ist dein Werkzeug, um klarzumachen, dass etwas strengverboten
ist, nicht erlaubt oder einfach eine ganz schlechte Idee".
Grammar Rule in 30 Seconds
Use 'mustn't' to say something is strictly forbidden or against the rules.
- Use 'mustn't' + base verb (no 'to'): 'You mustn't smoke here.'
- It never changes form: 'He mustn't', 'They mustn't' are the same.
- It means 'don't do it'—it is not the same as 'don't have to'.
Overview
mustn't da. Im Englischen ist mustn't dein ultimatives „Einfahrt verboten“-Schild.mustn't um Dinge, die definitiv NICHT okay sind. Es ist nicht nur ein Vorschlag, sondern ein harter Stopp.How This Grammar Works
mustn't die Zusammenziehung von must und not. Es ist ein Modalverb, was nur ein schicker Ausdruck dafür ist, dass es ein „Hilfsverb“ ist, das die Stimmung eines Satzes verändert. Im Gegensatz zu normalen Verben (wie walk oder eat) ist mustn't unglaublich faul – und wir lieben das!-s, kein -ed, kein -ing.mustn't benutzt, ist die Konsequenz bei Regelbruch meistens ziemlich ernst.
Formation Pattern
mustn't zu bilden, ist einfacher, als ein neues Netflix-Profil einzurichten. Du brauchst nur drei einfache Schritte:
mustn't hinzu: Das funktioniert für alle. Keine Ausnahmen!
to, kein -ing, keine Extras.
You (Subjekt) + mustn't + share (Basisverb) + your password.
mustn't ist der scharfe Senf, der dem Ganzen den Kick gibt. Vergiss die Zusammenziehung nicht! Während must not gut für formelle Briefe vom Anwalt ist, ist mustn't das, was du im echten Leben tatsächlich hören wirst. Es ist prägnanter, schneller und viel natürlicher beim Chatten.
When To Use It
mustn't, wenn es eine Regel gibt, die du absolut nicht brechen darfst. Stell dir vor, du bist bei einem exklusiven Sneaker-Drop; du mustn't vordrängeln, sonst fliegst du raus. Oder denk ans Gaming: Du mustn't deine Kontodaten teilen, sonst wirst du gehackt. Es ist perfekt für:- Offizielle Regeln: „You
mustn'tsmoke in the airport.“ - Sicherheitswarnungen: „You
mustn'ttouch that wire!“ - Starker sozialer Rat: „You
mustn'ttell him about the surprise party!“ - Moderne Etikette: „You
mustn'tleave your friend on 'read' for three days.“
mustn't spend all my money on Uber Eats this week.“ (Viel Glück dabei übrigens!)
Common Mistakes
mustn't to go sagen. Stop! Mustn't ist ein Rebell; es hasst das Wort to. Sag einfach mustn't go.mustn't zu benutzen, wenn du eigentlich meinst, dass etwas „optional“ ist. Wenn dein Kumpel sagt: „You mustn't come to the gym“, sagt er dir, dass du Fitnessstudio-VERBOT hast. Wenn er nur meint, dass du nicht kommen *musst*, sollte er don't have to benutzen. Wenn du mustn't aus Versehen benutzt, klingst du wie ein Bösewicht im Film oder ein sehr strenger Elternteil.m-u-s-t-n-'-t. Das kleine Apostroph ersetzt das o in not. Wenn du es vergisst, wird dich deine Autokorrektur schweigend verurteilen.Contrast With Similar Patterns
Mustn't hat ein paar Cousins, die ähnlich aussehen, aber völlig anders agieren.Mustn'tvs.Don't have to: Das ist der Champion der englischen Verwechslungen.Mustn'tbedeutet „Tu es nicht! (Verboten)“.Don't have tobedeutet „Du kannst es tun, wenn du willst, aber du musst nicht (Optional)“. Wenn du einem Date sagst, siemustn'tbezahlen, verbietest du es ihnen. Wenn du sagst, siedon't have tobezahlen, bist du höflich.Mustn'tvs.Shouldn't:Shouldn'tist wie ein sanfter Stupser von einem Freund. „Youshouldn'teat that third slice of pizza.“Mustn'tist wie eine Warnung vom Arzt. „Youmustn'teat that; you're allergic to it!“Mustn'tvs.Can't: Im lockeren US-Englisch benutzen Leute oftcan'tfür Regeln. „Youcan'tpark here.“Mustn'tist etwas formeller und wiegt schwerer. Es fühlt sich an, als wäre die Regel in Stein gemeißelt.
Quick FAQ
Kann ich mustn't für die Vergangenheit benutzen?
Nö! Mustn't lebt nur in der Gegenwart und Zukunft. Für die Vergangenheit benutzen wir weren't allowed to.
Ist mustn't in Amerika verbreitet?
Ehrlich gesagt? Nicht wirklich. Amerikaner sagen meistens can't oder shouldn't. Wenn du mustn't in New York benutzt, denken die Leute vielleicht, du hast zu viel *The Crown* geguckt.
Funktioniert es mit „he“ und „she“?
Ja! He mustn't und She mustn't sind völlig korrekt. Kein „s“ nötig!
Ist es okay für formelles Schreiben?
Must not ist besser für formelle Dokumente. Mustn't ist der König der Konversation.
Mustn't Conjugation (All Subjects)
| Subject | Modal | Base Verb | Example |
|---|---|---|---|
|
I
|
mustn't
|
smoke
|
I mustn't smoke.
|
|
You
|
mustn't
|
smoke
|
You mustn't smoke.
|
|
He/She/It
|
mustn't
|
smoke
|
She mustn't smoke.
|
|
We
|
mustn't
|
smoke
|
We mustn't smoke.
|
|
They
|
mustn't
|
smoke
|
They mustn't smoke.
|
Contractions
| Full Form | Contraction | Usage |
|---|---|---|
|
must not
|
mustn't
|
Very common in speech and informal writing.
|
Meanings
Used to express that an action is prohibited, forbidden, or a very bad idea according to rules, laws, or social norms.
Strict Prohibition
Official rules or laws that stop you from doing something.
“Passengers mustn't talk to the driver.”
“You mustn't park your car in front of the hospital entrance.”
Strong Advice Against
Telling someone not to do something because it is dangerous or a mistake.
“You mustn't tell Sarah about the party; it's a surprise!”
“You mustn't forget to take your passport to the airport.”
Negative Deduction (Rare)
Expressing a logical conclusion that something is likely not true (more common in British English).
“He mustn't be home yet; his car isn't in the driveway.”
“They mustn't like the food; they haven't eaten anything.”
Reference Table
| Subjekt | Negatives Modalverb | Grundform des Verbs | Kontext |
|---|---|---|---|
|
I
|
mustn't
|
forget
|
Personal reminder
|
|
You
|
mustn't
|
share
|
Safety rule
|
|
He
|
mustn't
|
enter
|
Strict prohibition
|
|
She
|
mustn't
|
know
|
Secret/Social
|
|
We
|
mustn't
|
late
|
Group rule (✗ wrong)
|
|
They
|
mustn't
|
park
|
Legal rule
|
|
It
|
mustn't
|
happen
|
General warning
|
Formalitätsspektrum
Personnel must not enter this restricted area. (A restricted room)
You mustn't go in there. (A restricted room)
You can't go in there. (A restricted room)
Stay out! No entry! (A restricted room)
Die Welt von Mustn't
Regeln
- Rauchverbot You mustn't smoke.
- Parkverbot You mustn't park.
Sicherheit
- Gefahr You mustn't touch.
Mustn't vs. Don't Have To
Ist es Mustn't?
Ist es gegen das Gesetz oder eine Regel?
Ist es optional?
Wann man Mustn't sagt
Apps/Technik
- • Passwörter teilen
- • Spoiler posten
- • Trollen
Reisen
- • Ausweis vergessen
- • Rauchen im Flugzeug
- • Türen öffnen
Beispiele nach Niveau
You mustn't swim here.
You are not allowed to swim here.
He mustn't eat chocolate.
He is not allowed to eat chocolate.
We mustn't be late.
It is important that we are not late.
You mustn't shout.
Do not shout.
You mustn't use your phone in class.
Using your phone is against the rules.
Drivers mustn't park on the grass.
Parking on the grass is forbidden.
You mustn't forget your keys again.
It's a bad idea to forget your keys.
We mustn't tell him the secret.
We are forbidden from telling him.
You mustn't drink the water; it's not potable.
The water is unsafe to drink.
Visitors mustn't feed the animals in the zoo.
Feeding animals is strictly prohibited.
You mustn't take photos inside the museum.
Photography is not permitted.
We mustn't let this opportunity pass us by.
It would be a mistake to ignore this.
One mustn't assume that all students learn the same way.
It is wrong to make that assumption.
You mustn't speak to your manager in that tone.
That way of speaking is unacceptable.
The medicine mustn't be taken on an empty stomach.
It is dangerous to take it without food.
We mustn't underestimate the complexity of the problem.
We should not think it is easier than it is.
The jury mustn't be influenced by media coverage.
It is legally required that they remain neutral.
Such behavior mustn't be tolerated in a civilized society.
Society should not allow this.
He mustn't have heard the news, or he'd be here.
It is logically likely he hasn't heard.
We mustn't lose sight of our original objectives.
We must remain focused on our goals.
The sanctity of the contract mustn't be compromised.
The contract must remain untouched.
One mustn't trifle with the emotions of others.
It is morally wrong to play with feelings.
The archives mustn't be accessed without explicit written consent.
Access is strictly controlled.
The delicate balance of the ecosystem mustn't be disturbed.
Human interference is prohibited.
Leicht verwechselbar
Learners think 'mustn't' is the opposite of 'must' in terms of necessity. They use 'mustn't' when they mean 'it's not necessary'.
Both are used for advice, but 'mustn't' is a command while 'shouldn't' is a suggestion.
In many contexts they overlap, causing confusion about which one to pick.
Häufige Fehler
You mustn't to run.
You mustn't run.
He musts not go.
He mustn't go.
You don't must smoke.
You mustn't smoke.
I mustn't to forget.
I mustn't forget.
It's Sunday, so I mustn't work.
It's Sunday, so I don't have to work.
You mustn't parking here.
You mustn't park here.
Mustn't you go now?
Don't you have to go now?
Yesterday I mustn't go out.
Yesterday I wasn't allowed to go out.
You mustn't have a license to drive.
You must have a license to drive.
He mustn't be the thief; he was with me.
He can't be the thief; he was with me.
Satzmuster
You mustn't ___ in the ___.
We mustn't forget to ___.
It's a secret, so you mustn't ___.
The ___ mustn't be ___.
Real World Usage
You mustn't carry liquids over 100ml.
You mustn't tell him about the surprise party!
Employees mustn't use personal phones during shifts.
You mustn't turn right on a red light here.
Drivers mustn't open the food packaging.
Users mustn't post copyrighted content.
Die 'To'-Falle
ist falsch. Sag stattdessen:You mustn't go."
USA vs. UK
Sozialer Druck
Smart Tips
Use the full form 'must not' instead of the contraction 'mustn't' to sound more authoritative.
Use 'mustn't' for strong personal advice to friends.
Delete the 'to' immediately. Modal verbs are always followed by the base verb.
Ask yourself: 'Is it okay if I do this?' If the answer is NO, use 'mustn't'. If the answer is YES, use 'don't have to'.
Aussprache
The Silent 'T'
In the word 'mustn't', the first 't' is silent. It sounds like 'MUSS-unt'.
Contraction Stress
The stress is usually on the first syllable: MUSS-nt.
Falling Intonation for Commands
You mustn't ↘ touch it.
Conveys a firm, final rule.
Einprägen
Eselsbrücke
Mustn't is a 'Must-Not'—if you do it, you're in a knot!
Visuelle Assoziation
Imagine a giant red 'X' taped over your mouth or hands. That 'X' is the word 'mustn't' stopping you from doing something forbidden.
Rhyme
When the sign says 'Mustn't', don't be a fool. Follow the law and follow the rule!
Story
Little Red Riding Hood's mother said: 'You mustn't leave the path.' Red Riding Hood did leave the path, and she met the wolf. The word 'mustn't' was there to keep her safe from the wolf.
Word Web
Herausforderung
Look around your room or office. Find 3 things you 'mustn't' do (e.g., 'I mustn't spill coffee on my laptop'). Say them out loud.
Kulturelle Hinweise
Mustn't is very common in the UK for rules and strong advice. It sounds natural and polite yet firm.
Americans often find 'mustn't' sounds a bit old-fashioned or very formal. They usually use 'can't' or 'shouldn't' instead.
In legal documents, 'must not' (the full form) is used to create a mandatory prohibition.
From Old English 'mōtan' (to be allowed/to have to). The negative 'not' was added later to create prohibition.
Gesprächseinstiege
What are some things you mustn't do in a library?
Tell me about a strict rule at your workplace or school.
If you were a parent, what is one thing your children mustn't do?
Discuss the ethical things a doctor mustn't do.
Tagebuch-Impulse
Häufige Fehler
Test Yourself
If you are in a library, which sentence is correct?
You ______ share your password with strangers.
Find and fix the mistake:
She mustn't to use her laptop in the exam.
Score: /3
Ubungsaufgaben
8 exercisesWhich sentence is correct?
The museum is free. You ___ pay.
Find and fix the mistake:
You mustn't smoking in the hospital.
tell / mustn't / secret / you / the
Match: 1. No Entry, 2. No Cameras, 3. No Food
It is forbidden to park here.
'Mustn't' is the same as 'Don't have to'.
A: Can I tell John? B: No, you ___! It's a surprise.
Score: /8
Practice Bank
10 exerciseseat / mustn't / here / you
Du darfst dein Handy im Kino nicht benutzen.
Ordne die Bedeutung zu
Students ______ cheat during tests.
Which is more formal for a legal document?
He mustn't drinks coffee at night.
forget / mustn't / they / ID / their
Pick the scenario for 'mustn't':
I ______ forget my mom's birthday!
We mustn't lose the keys.
Score: /10
FAQ (8)
It is less common than in British English. Americans usually say `can't` or `not allowed to`. However, Americans still understand it perfectly.
No, `mustn't` has no past form. You should use `wasn't allowed to` or `couldn't`. For example: 'I wasn't allowed to go out yesterday.'
`Mustn't` is a strong rule or prohibition. `Shouldn't` is just advice. If you say `mustn't`, it means 'don't do it or there will be trouble!'
`Must not` is more formal and emphatic. You will see it on official signs or in legal contracts to make the rule sound very serious.
It is possible (e.g., 'Mustn't we tell him?'), but it sounds very old-fashioned. It's better to use 'Shouldn't we...?' or 'Don't we have to...?'
No. Like all modal verbs, it stays the same for all subjects. `I mustn't`, `she mustn't`, `they mustn't`.
It can be quite blunt. To be more polite, you might say 'I'm afraid you can't...' or 'Please don't...'
Yes, in British English, it can be used for logical deduction (e.g., 'He mustn't be at home'). But `can't` is much more common for this.
Scaffolded Practice
1
2
3
4
Mastery Progress
Needs Practice
Improving
Strong
Mastered
In Other Languages
nicht dürfen
German 'muss nicht' is NOT English 'mustn't'.
no deber / prohibido
Spanish often uses 'no puedes' (can't) where English uses 'mustn't'.
ne pas devoir / il ne faut pas
French impersonal 'il ne faut pas' is much more common than the English 'one mustn't'.
〜てはいけない (~te wa ikenai)
Japanese has different levels of politeness for prohibition that English lacks.
لا يجب (la yajib)
Arabic often uses the same phrase for 'mustn't' and 'shouldn't'.
禁止 (jìnzhǐ) / 不准 (bùzhǔn)
Chinese uses full verbs/adjectives rather than a modal auxiliary.
Learning Path
Prerequisites
Verwandte Videos
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