Questions & Answers about W tej sytuacji plotki o nas są fałszywe.
Why do we use nas after o?
The preposition o (meaning "about") requires the Locative case. The word nas is the Locative form of my (we). So, o nas means "about us". Note that nas is also the form used for the Genitive and Accusative cases, making it easier to remember!
Can I use o nas after nouns like plotki? I thought it was only for verbs of speech or thought.
Yes, you can! While you will often use o + Locative after verbs like mówić (to speak) or myśleć (to think), it also attaches directly to nouns to describe their topic. Just like plotki o nas (rumors about us), you can say książka o Polsce (a book about Poland) or film o miłości (a movie about love).
Why is it tej sytuacji instead of the dictionary form ta sytuacja?
The preposition w (meaning "in") requires the Locative case when talking about a state or situation you are currently in. The feminine noun sytuacja drops its -a and takes -i, and the pronoun ta changes to tej in the Locative case.
Why does the adjective fałszywe end in -e here?