Questions & Answers about Hún selur bækur á markaðnum um helgar.
Because the verb selja takes an accusative direct object, and here we mean “books” (plural). Bækur is the nominative/accusative plural of bók “book.”
- Singular: bók (nom/acc/dat), bókar (gen)
- Plural: bækur (nom/acc), bókum (dat), bóka (gen) If you wanted “the books,” you’d say bækurnar (accusative plural definite). “Some books” can be nokkrar bækur.
- Hún is nominative (subject).
- bækur is accusative (direct object of selur).
- á markaðnum is dative because á takes the dative for location (“at/on” a place).
- um helgar is accusative plural because um takes the accusative in time expressions (“during/on” weekends).
Use á + dative for location (being at/on a place) and á + accusative for direction (movement to/onto a place).