Back to library

Modal verb 'müssen' (must/have to)

Modalverb 'müssen'

'müssen' (must / to have to) expresses necessity or obligation.

Structure

müssen (Position 2) + … + Infinitiv (Satzende)

müssen (position 2) + … + infinitive (end of the clause)

Details

Part of Speech
Verb
Word Type
Modal verb
Register
Standard

Explanation

Meaning. müssen means must / to have to. It expresses necessity or obligation - something that is required: Ich muss arbeiten - I have to work.

Conjugation (irregular singular).

  • ich muss
  • du musst
  • er/sie/es muss
  • wir müssen
  • ihr müsst
  • sie/Sie müssen

Note the vowel change ü → u in the and the identical ich-/er-forms (muss), spelled with ss.

Word order - the bracket. müssen sits in position 2; the infinitive goes to the end:

  • Ich muss heute arbeiten. - I have to work today.
  • Wir müssen jetzt gehen. - We have to go now.
  • Du musst das Buch lesen. - You have to read the book.

Common mistakes. Be careful: nicht müssen means "do not have to" (no obligation), not "must not" - to forbid something use nicht dürfen. Do not add -t to the er-form (er muss, not er musst). Keep the second as an at the end.

About Modal verb 'müssen' (must/have to)

'müssen' (must / to have to) expresses necessity or obligation.

forms: ich muss, du musst, er muss. The goes to the end of the sentence.

'müssen' drückt Notwendigkeit oder Zwang aus.

Caution

Irregular in the singular: ich muss, du musst, er/sie/es muss (spelled with ss). The infinitive stays at the end.