Learn Swedish: Du måste lämna namnskylten i receptionen innan helgen. - You must leave the name tag at the reception desk before the weekend.

This showcases the Swedish Place-Time rule, often called the Rum-Tid rule. When a sentence ends with both a location and a time, the location (Place) almost always comes first. Here, the place i receptionen goes before the time innan helgen.

Why is the verb lämna in its infinitive form here?

Because it comes directly after the helper verb måste (must). When you use a helper verb in Swedish, the main verb that follows it must be in the infinitive. We use lämna instead of the present tense lämnar.

Why use i for the reception instead of a word like vid?

Swedish often uses i for a reception because it is thought of as a room or an enclosed area. If you wanted to emphasize standing right next to the physical desk itself, you could use vid receptionen.

How is the word namnskylten built?

It is a compound word made of namn (name) and skylt (sign or tag). Because en skylt is an en-word, the definite form (the name tag) gets the suffix -en, making it namnskylten.