Questions & Answers about W weekend mój mąż pomaluje nową ścianę.
Why use the perfective verb pomaluje here instead of the imperfective będzie malował?
Because the perfective verb pomaluje focuses on the completed result: he will finish painting the wall. If you used the imperfective będzie malował, it would focus on the process, meaning he will spend time painting it, but might not necessarily finish the job.
Why doesn't the perfective future tense of pomalować use a future helper word like będzie?
Perfective verbs never use będzie. They are formed by taking the perfective infinitive (pomalować) and adding present-tense endings. Even though the endings look like the present tense, the perfective nature of the verb means it automatically refers to a completed action in the future.
Why is the object written as nową ścianę instead of the dictionary form nowa ściana?
It is the direct object receiving the action of being painted, so it must be in the accusative case. For feminine nouns like ściana, the noun ending changes from -a to -ę, and the adjective ending changes from -a to -ą.
I remember the preposition w often triggers the locative case. Why is it just w weekend here?