Why the hell does the female voice stress the second syllable in ложку? I can read and write pretty well in Russian, also understand a lot, I started Duo for improving my spoken Russian. But this is full of incorrectly stressed words that destroys my language skills instead of improving it.
Please Duo, get rid of these wrong stresses. Pleeeeeease!
It has to do with the genitive of negation. User Nikiton85 states: "To avoid an ambiguity, in negations the object normally turns to genitive. If the context is transmitted totally clearly, you still can use both genitive and accusative: Он не видит ложку/ложки in singular, and Он не видит ложки/ложек in plural. Though genitive is preferred." Further discussion is found at: https://forum.duolingo.com/comment/39274078
Since i am native Serbian speaker its not much of a deal to use accusative in a phrase so i cant help you with that.
BUT i can help you with у. У means "near" and also you add it when you say that you have or havent got something. Example: у меия есть АИДС. Which means: I have AIDS(i dont btw).
Its literal however translation is: Near me there is AIDS. So, mostly you use у when youre talking about possession or locating objects, people and such.
Correct me if im wrong.
Hope i helped you a bit and im sorry for my rusty english ;)