Questions & Answers about Nie zapominaj o naszym spotkaniu.
Why use the imperfective verb zapominaj here instead of the perfective zapomnij?
In Polish, negative commands (telling someone not to do something) almost always use the imperfective aspect, even for one-time events. Because of the word nie, you must use zapominaj. If you were telling someone to forget (a positive command), you would use the perfective: Zapomnij.
Why is the phrase naszym spotkaniu in the locative case?
The preposition o forces the locative case when it means "about" (as in talking, thinking, or forgetting about something). If o meant "for" (like fighting for or asking for something), it would take the accusative case instead.
How does the neuter noun spotkanie (meeting) change to spotkaniu?
Neuter nouns that end in -nie, -cie, or -dzie have a special rule in the locative case: they drop the final -e and take an -u. Thus, spotkanie becomes spotkaniu.
Why is the pronoun naszym used here instead of naszego?