Questions & Answers about Drużyna gra przeciw nam.
Because drużyna is a singular noun: team.
In Polish, the verb must agree with the grammatical number of the subject:
- drużyna gra = the team plays / is playing
- drużyny grają = the teams play / are playing
Even though a team contains many people, Polish treats drużyna as one singular unit, so the verb is singular too.
Because przeciw requires the dative case, and the dative form of my (we / us) is nam.
So:
- my = we
- nas = us, but in other cases such as genitive or accusative
- nam = to us / against us after przeciw
That is why you say:
- przeciw nam = against us
not:
- przeciw nas ✘