How does Fitzgerald prepare the reader for what is about to happen?

Fitzgerald prepares the reader for upcoming events by using foreshadowing, symbolic imagery, and the emotional tone of the narrative. He subtly hints at tensions and conflicts through the interactions between characters, particularly in their dialogue and behavior. Additionally, the use of descriptive settings and motifs, such as the eyes of Dr. T.J. Eckleburg or the valley of ashes, evokes a sense of impending doom and moral decay. This combination creates an atmosphere that primes the reader for the unfolding drama and tragedy.