Great Gatsby HELP

I was wondering if anybody could help me with the narrative techniques used in chapter four ? i need to write like a small essay (:

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Originally Posted by Hater

This book realy sucks. I were force to read it for english class, and i hated it. thank God i'll never have to read a crapy book like that again. It was by far one of my least favorite book i ever read. I didn't enjoy it at all. I will not advise any one to read this book. If i had to give this book a rating i'll give 1 out of a possible 10.

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I don't blame you. I hate "crapy" books, too.