Similes: "She loved to luxuriate in the presence of this man. and to feel - almost as a sunbather feels in the sun." <span> Alliteration: "The room was warm and clean, the curtains drawn." </span>
Your purpose for writing the essay might be to persuade the reader to watch that particular TV show. (As for the questions below, I think you have to answer those yourself based on the TV show you've chosen.)