Learn Finnish: Kun uusiokäytämme nämä langat, voimme virkata ne uusiksi paidoiksi. - When we upcycle these yarns, we can crochet them into new shirts.

The translative case (-ksi) expresses a change of state, like turning yarns into shirts. Because we are making multiple shirts, we use the plural translative (-iksi). Adding this ending closes the syllable, which triggers the weak consonant grade, changing the t in paita to a d.

Why does the adjective uusi become uusiksi?

Adjectives must agree in case and number with the noun they modify. The word uusi has the plural stem uusi-. We add the translative -ksi directly to this stem so it perfectly matches the form of paidoiksi.

Why are the objects nämä langat and ne in the nominative plural form rather than the partitive?

These are total objects. Because the actions of upcycling and crocheting are seen as complete processes applied to this specific, entire batch of yarn, we use the nominative plural (often called the basic plural) instead of the partitive case.

How is the verb uusiokäytämme formed?

It is a compound verb made from the prefix uusio- (indicating recycled or secondary use, derived from uusi) and käyttää (to use). Conjugated in the first person plural, it becomes uusiokäytämme (we upcycle or reuse).