Мои друзья поехали в банк за банковской выпиской.
My friends went to the bank for the bank statement.
Breakdown of Мои друзья поехали в банк за банковской выпиской.
друг
friend
мой
my (мой, моя, моё) / mine
в
in / to (direction)
банк
bank
Questions & Answers about Мои друзья поехали в банк за банковской выпиской.
Why do we use за банковской выпиской here instead of для to say "for"?
The preposition за followed by the Instrumental case is used specifically for target retrieval—going somewhere to fetch, pick up, or bring back something. If you used для (which takes the Genitive case), it would mean the statement is the beneficiary, as if you were buying a folder "for" the bank statement!
Why use the perfective verb поехали instead of the multidirectional ездили?
Поехали emphasizes the departure or the single-direction trip to the destination. It means "set off" or "went." If you used ездили, it would mean a completed round trip, implying they went to the bank and have already returned.
The word for statement here is выписка (in the Instrumental case as выпиской). How does this word literally translate?
Выписка comes from the verb выписать, meaning "to write out" or "to extract." A bank statement is literally an "extract" or a copy of your financial records written out for you.
Why does the adjective банковской end in -ой?
It must match the feminine noun выпиской in the Instrumental case. The Nominative form is банковская, and feminine adjectives in the Instrumental case take the -ой ending.