When watching a movie or reading a book does this happen to anyone else?

when I use to watch movies (this don't happen with all the movies I use to watch) I would be paying attention but I'II still be confused because I don't understand what's going on. Same thing when I use to read my American lit books and British lit books for school .. I'II read them but don't understand what I'm reading. I'll read the paragraph over and over but can't comprehend what I'm reading. In the American lit books they use to give us questions basically about what we read but I couldn’t answer them because I didn’t understand anything..