Questions & Answers about Do koktajlu używam blendera, a ciasto mieszam mikserem.
Because the preposition do requires the genitive case, so koktajl becomes koktajlu.
Here do koktajlu means something like:
- for the smoothie
- to make the smoothie
- for use in the smoothie
So it is not the direct object of the verb. It is a prepositional phrase telling us what the blender is being used for.
The verb używać takes the genitive case in standard Polish.
So:
- blender → nominative
- blendera → genitive
That is why you say:
- używam blendera = I use a blender
This is something learners usually just need to memorize with the verb:
- używać + genitive
For example:
- używam telefonu
- używam komputera
- używam noża