Look at the link I posted for you, and then read The Black Cat again. It should make sense by then, and then if you still need help, ask specific questions and we will try to help.
* Plot summary
A decent, animal-loving man takes to drink and suffers a change for the worse, becoming an alcoholic. Imagining one evening that his beloved black cat is avoiding him he grabs it; the startled cat scratches him so he retaliates. Soon after, possessed by the alcohol, he reluctantly the poor creature by the neck from a tree. Then his house burns down and in the ruins he imagines seeing the shape of a cat imprinted on a wall... a cat with a noose around its neck.
I think the cat bites him instead. And what happened to the cat, I won't tell, since it is too gruesome. He eventually finds a cat similar to the one he hanged, with the exception where there is a white spot on his chest (ambiguity!). The narrator hallucinates that the white spot is in the shape of a gallow, and starts to loathe the cat. He... does something... and hides ... it... in a wall. He notices the cat missing, assuming that it fled in terror. The police came, and discovered what the narrator did, and the cat is found in the wall!
I omitted several parts out since they were just too gruesome for MLNO.
And my teacher expects me to not just pay attention to the plot( don't compare the obvious!), but also how he writes it, and several other stuff.
