Modal verbs and "möchten": können, müssen, wollen, dürfen, möchten

Modal verbs let you talk about ability, obligation, desire, and permission — can, must, want to, may — without needing a whole new sentence structure. German's modal verbs are irregular in a small, predictable way, and they change how the rest of the sentence is built.

Quick shortcut: ich/er forms have no personal ending and often change their vowel; a paired verb goes to the very end of a simple sentence, in its infinitive form.

Four modal verbs, plus the polite möchten

This lesson covers the four modal verbs beginners need most — können, müssen, wollen, dürfen — plus möchten, an extremely common polite form used the same way. (German has two more modal verbs, sollen and mögen, for later.)

Two patterns to notice:

• For können, müssen, wollen, dürfen, the ich and er/sie/es forms are identical and take no personal ending at all: ✅ ich kann, ✅ er kann — not ❌ ich kanne, not ❌ er kannt. Möchten also has identical ich/er/sie/es forms, but here that shared form is möchte: ✅ ich möchte, ✅ er möchte.
• Four of the five verbs (all but möchten) change their stem vowel in the singular (können → kann-, müssen → muss-, wollen → will-, dürfen → darf-), then switch back to the infinitive's vowel for wir, ihr, sie/Sie. This is a bigger, more irregular change than the small a→ä/e→i/e→ie shifts you've seen in ordinary stem-changing verbs — modal verbs simply have to be learned as their own set.

What each one means

• Können — ability or possibility: Ich kann schwimmen. (I can swim.)
• Müssen — obligation or necessity: Du musst jetzt gehen. (You have to go now.)
• Wollen — desire or intention: Wir wollen nach Italien fahren. (We want to go to Italy.)
• Dürfen — permission: Darf ich hier parken? (May I park here?)
• Möchten — a polite, softer way of saying "want," especially for requests: Ich möchte einen Kaffee. (I'd like a coffee.)

Möchten is worth a special note: it's not simply the present tense of wollen — it comes from a different, more polite verb form, but you don't need that detail to use it correctly. Ich will einen Kaffee is grammatically fine but can sound blunt or childish; Ich möchte einen Kaffee is the everyday polite way to order or request something.

Careful with negatives — müssen and dürfen work opposite to what you might expect: Ich muss nicht gehen means "I don't have to go" (no obligation), while Ich darf nicht gehen means "I'm not allowed to go" (forbidden). Negating müssen removes the obligation; negating dürfen creates a prohibition.

Sentence structure: the other verb goes to the end

A modal verb is often paired with another verb's bare infinitive (no zu), which moves to the end of a simple sentence, while the modal verb itself takes the normal second position in a statement:

• Ich kann gut schwimmen. (I can swim well.)
• Wir müssen heute früh aufstehen. (We have to get up early today.)
• Er möchte ein Buch lesen. (He would like to read a book.)

This creates a "bracket" around the rest of the sentence, with the modal verb in second position and the infinitive at the very end — everything else (objects, time expressions) sits in between:

• Ich kann morgen leider nicht kommen. (Unfortunately I can't come tomorrow.)

When the action is obvious from context — often with a direction or a well-known activity — the infinitive can simply be left out: Ich möchte einen Kaffee. (understood: trinken/haben) Ich muss nach Hause. (understood: gehen/fahren) Er kann gut Deutsch. (understood: sprechen)

In a yes/no question, the modal verb itself moves to the very front, exactly like any other verb: Darf ich hier parken? (May I park here?) Kannst du morgen kommen? (Can you come tomorrow?) The infinitive still stays at the end if one is used.

Common mistakes

• ❌ Ich kanne schwimmen. → ✅ Ich kann schwimmen. (ich takes no ending with modal verbs)
• ❌ Er kannt gut Deutsch sprechen. → ✅ Er kann gut Deutsch sprechen. (er/sie/es takes no ending either — it looks just like the ich form)
• ❌ Ich will zu schwimmen. → ✅ Ich will schwimmen. (no zu before the infinitive after a modal verb, unlike some other verb + infinitive constructions)
• ❌ Ich kann schwimmen gut. → ✅ Ich kann gut schwimmen. (the infinitive belongs at the very end of the sentence, not right after the modal verb)
• ❌ Ich wolle einen Kaffee. → ✅ Ich will einen Kaffee. / more politely: ✅ Ich möchte einen Kaffee. (wolle isn't one of wollen's present-tense forms)

Quick check

Which form is correct?

1. Ich ____ (kann / kanne) gut kochen.
2. Du ____ (musst / muss) jetzt lernen.
3. Wir ____ (will / wollen) ins Kino gehen.
4. ____ (Darf / Darfst) ich hier rauchen?
5. Sie (she) ____ (möchtet / möchte) einen Tee.

Key takeaways

• Können, müssen, wollen, dürfen have no personal ending in the ich and er/sie/es forms, which are always identical to each other. Möchten shares that same identical-forms pattern, with möchte.
• Four of the five change their stem vowel in the singular, then revert to the infinitive's vowel for wir, ihr, sie/Sie — a pattern specific to modal verbs, not the regular stem-vowel-change rule.
• Möchten is the everyday polite way to say "would like," softer than wollen.
• Negating müssen removes an obligation ("don't have to"); negating dürfen creates a prohibition ("not allowed to").
• A modal verb often pairs with another verb's bare infinitive at the very end of a simple sentence — the modal verb itself stays in second position in a statement, or moves to the front in a yes/no question.