Lesson 9: Modal Verbs of Obligation and Permission
Learn how to express obligations, prohibitions, and permissions using müssen and dürfen, the impersonal pronoun man, key daily vocabulary, and an interactive dialogue
Welcome to Lesson 9 of Level A1.2! In this lesson, you will learn how to talk about rules, obligations, permissions, and prohibitions in German. We will cover the modal verbs müssen and dürfen, how to conjugate verbs with the general pronoun man, essential vocabulary for building rules and public spaces, and a realistic German dialogue with full audio support.
Click on the audio speaker icon next to any word or sentence to hear native German pronunciation. For the best experience, we recommend using Google Chrome.
Part 1: German Grammar Rules (Grammatik)
In this section, we will break down three core rules that allow you to express obligations and regulations effortlessly:
1. The Modal Verb müssen (Obligation & Necessity)
Use müssen when something is compulsory, dictated by law, or mandatory with no alternative choice:
2. The Modal Verb dürfen (Permission & Prohibition)
Use dürfen to express permission (to be allowed to). When combined with negation words like nicht or kein, it means strict prohibition (must not):
- dürfen (Allowed): Hier darf man grillen. (Barbecuing is allowed here.)
- nicht dürfen (Forbidden): Hier darf man nicht rauchen. (Smoking is not allowed here.)
Present Tense Conjugation Table (Präsens)
Notice how modal verbs change in singular forms (losing Umlauts) and retain their Umlauts in plural forms:
| Personal Pronoun | müssen (must) | dürfen (may / allowed) | Audio Practice 💡 |
|---|---|---|---|
ich |
muss |
darf |
|
du |
musst |
darfst |
|
er / es / sie / man |
muss |
darf |
|
wir |
müssen |
dürfen |
|
ihr |
müsst |
dürft |
|
sie / Sie |
müssen |
dürfen |
4. The Impersonal Pronoun man (One / People in General)
When discussing general public rules or people in general, use man (always in lowercase). Grammatically, it is always conjugated like third-person singular (er / es / sie):
Part 2: Vocabulary & Useful Expressions (Wortschatz)
Here is key German vocabulary related to building regulations, traffic rules, and expressing your personal opinion:
1. Public & House Rules Vocabulary (Hausordnung & Regeln)
| German Phrase | English Translation | Listen |
|---|---|---|
|
die Hausordnung
|
House rules / Building regulations | |
|
erlaubt sein
|
To be allowed / permitted | |
|
verboten sein
|
To be forbidden / prohibited | |
|
Müll in die Natur werfen
|
Littering / Throwing trash in nature | |
|
bei Rot über die Ampel gehen
|
Jaywalking / Crossing at a red light | |
|
laute Musik im Park hören
|
Listening to loud music in the park | |
|
ohne Helm fahren
|
Riding without a helmet | |
|
auf dem Balkon grillen
|
Barbecuing on the balcony |
2. How to Express Your Opinion & Annoyance (Meinung ausdrücken)
a) Expressing Annoyance and Disapproval:
- Das stört mich total! (That really bothers me!).
- Das stört mich gar nicht. (That doesn't bother me at all).
- Das finde ich nicht in Ordnung. (I don't think that's okay).
- Das ist echt unangenehm. (That is really unpleasant).
- Das ist wirklich gefährlich. (That is really dangerous).
b) Expressing Agreement & Approval:
- Das ist doch erlaubt. (That is allowed, of course).
- Ich denke, das ist kein Problem. (I think that's no problem).
- Das finde ich echt super! (I think that's really great!).
Part 3: Practical Conversation (Dialog im Alltag)
Listen to a realistic conversation between two neighbors (Sami and Lukas) living in an apartment building in Germany, discussing rules and daily habits:
(Hello Lukas! Is barbecuing allowed here on the balcony? I would like to invite some friends today.)
(Hi Sami! No, that is forbidden. You have to read the house rules. Barbecuing on the balcony is not permitted here.)
(Oh, I didn't know that! That bothers me a little, but one must accept the rules. Where is barbecuing allowed then?)
(You can barbecue in the park on the corner. But watch out: You must not throw trash into nature!)
(I think that's completely fine. I'll ride my bicycle there. Does one have to wear a helmet when cycling in Germany?)
(No, you don't have to, but it's really safe and good. And remember: You must not cross at a red light! That is very dangerous.)
(Thanks a lot for the tips, Lukas! That's really great of you.)
Frequently Asked Questions (FAQ)
What is the main difference between the modal verbs müssen and dürfen in German?
The verb müssen expresses obligation or necessity (must / have to), while dürfen expresses permission (may / allowed to). When negated (nicht dürfen), it signifies a strict prohibition (must not).
How are verbs conjugated with the impersonal pronoun man?
The pronoun man is always treated as third-person singular (er / es / sie) in verb conjugation.
Does the stem vowel of modal verbs change in plural forms?
No, the Umlaut returns and the verbs follow standard endings with plural pronouns (wir, ihr, sie/Sie).
What is the most common German phrase to express extreme annoyance?
We use the popular phrase: Das stört mich total! (That really bothers me!).
What is the difference between nicht dürfen and nicht müssen?
nicht dürfen means something is strictly forbidden (must not), whereas nicht müssen means lack of obligation/necessity (don't have to).
How do you express building or house rules in German?
We use the noun die Hausordnung combined with modal verbs, e.g., Man muss die Hausordnung lesen.
Is the pronoun man written with a capital or lowercase letter?
It is always written in lowercase man to distinguish it from the noun der Mann (the man).
What is the golden rule for singular modal verb conjugations?
The first-person singular (ich) and third-person singular (er/es/sie/man) conjugations are always identical, and the stem vowel loses its Umlaut.
Verified Educational References
Official Textbooks & Educational Resources
This lesson has been crafted and structured in accordance with globally accredited German language frameworks:
- Momente A1 (Kursbuch & Arbeitsbuch) - Hueber Verlag
- Schritte International Neu (A1.2) - Hueber Verlag
- Netzwerk neu A1.2 - Klett Sprachen
- Begegnungen A1+ - Schubert-Verlag
- Grammatik aktiv A1-B1 - Cornelsen Verlag
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