Du må møte opp på kontoret i morgen.

you

Breakdown of Du må møte opp på kontoret i morgen.

• måtte: must
• i morgen: tomorrow
• på: at

Questions & Answers about Du må møte opp på kontoret i morgen.

Why does Norwegian use du here—can it be omitted like “(You) must …” in English?

In Norwegian, the subject is normally required in a full sentence, so you usually keep du. Dropping it would sound incomplete except in very informal notes, commands, or bullet points.
So Du må … is the standard way to say it.

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What exactly does må mean here, and how strong is it?

Må is the modal verb meaning must / have to. It expresses obligation or necessity and is generally strong—closer to “must” than “should.”
Depending on context it can be strict (a requirement) or practical necessity (“you’ll need to”).

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Why is the verb order Du må møte … and not something like Du møter må …?

Modal verbs in Norwegian typically take an infinitive verb after them:

• må + infinitive → må møte (must meet / must show up)
  So møte stays in the infinitive form after må.

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What does møte opp mean, and why are there two words?

Møte opp is a common verb phrase meaning to show up / report in person / turn up.

• møte = to meet / to attend
• opp adds the sense of turning up (physically arriving)
  You’ll often see this with places and times: møte opp på kontoret klokka 9.

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