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A2 english literature wjec coursework

my essay question is "How are key relationships presented through the language in Fitzgerald's "The Great Gatsby" and Duffy's "The World's Wife" In the course of your writing make clear how your understanding of both texts has been illuminated by Tennessee Williams "A Street Car Named Desire" as well as other readings of the core and relevant contextual factors influencing all three texts."
i have a draft done, but i need a good introduction, something that will talk about the use of language used to portray relationships? and does anyone have any other interesting points? or websites that i can use. quite struggling to get a good piece of coursework done, thanks x