Hello, there is an interesting instrumental for time in Czech, but I am not sure if it exists in Polish as well. You know that you can reply to the question "when?" with pure instrumental (narzędnik) in Slavic languages (e.g.: jesienią...), is this sentence used / possible in Polish: Filip pracuje tu już piątym rokiem.?? That is the literal translation of a Czech sentence. Does it work in Polish, too? Thanks.