Very curious why this is sometimes spelled with an accent and other times it's not.
Have you got any clues yet?
Ni also means "you" in Swedish.
你 (nǐ) means "you" in most Chinese dialects.
Is it spelled with the accent or no?
What is the difference between ni and ní?
Duolingo can you add the sound of the word when I click on it like you have for Spanish?