Questions & Answers about Ta stara bajka to moje najlepsze wspomnienie.
Why do we use to here instead of jest, and how does it affect the case?
When equating two noun phrases using to, both the subject and the predicate stay in the Nominative case. If we used jest instead, the second half of the sentence would have to take the Instrumental case, becoming moim najlepszym wspomnieniem.
I know pamięć means memory. Why use wspomnienie here instead?
Pamięć refers to the general biological function of your brain, like having a good or bad memory overall. Wspomnienie refers to a specific recollection of a past event. Since you are talking about one specific thing you remember, wspomnienie is the correct word.
Does bajka only mean a written fairytale?
Not at all! While it traditionally means a fairytale or fable, in everyday modern Polish, bajka is the standard word for a children's cartoon or animated show on TV.
Why is the adjective najlepsze neuter when the subject of the sentence, bajka, is feminine?
The adjective najlepsze is directly attached to the neuter noun wspomnienie (memory). Across a to equation, the adjective only needs to agree with the noun it directly modifies in its own phrase, not the subject from the other side of the sentence.