Questions & Answers about Po wycieczce moja twarz jest czerwona od słońca.
In this sentence po means after (in a time sense: after the trip).
When po means after in time, it always takes the locative case.
So we have:
- po
- locative → po wycieczce = after the trip
Other common uses of po with the locative:
- po obiedzie – after lunch
- po pracy – after work
- po lekcji – after the lesson
So: remember the pattern po + locative for after (something in time).