In Chapter 7, Nick makes note that the weather is extremely hot and "broiling, almost the last, certainly the warmest day of the summer" (120). Nick also comments that because of the heat, "every extra gesture was an affront to the common store of life" (121). The heat obviously manipulates people's train of thought by making them angry and anxious, and makes them say things or act in a way that they normally wouldn't do. For example, Daisy acts especially superficial and sardonic as she kisses Gatsby and tells Jordan to kiss Nick too, while Tom is getting a drink to relieve them from the heat. Another time when the weather is used to reflect a significant event is in chapter 5, as Gatsby and Daisy's reunion begins along with a pouring rain, showing the awkwardness and the sadness of their current situation.
Daisy is mostly unconcerned about her daughter, and how Daisy makes the nurse take every care of her demonstrates that Daisy is not a good mother. The child's well-disciplined, polite behavior toward Daisy and the way she "rooted shyly into her mother's dress" (123) show that Daisy and her daughter are not very close and may not even love each other as much as a typical mother and her child would. Gatsby looked "at the child with surprise," because Gatsby had always thought of Daisy as she as in the past, and could not yet acknowledge the time gap while he was away from Daisy when she married Tom and gave birth to a child.
Tom talked to Mr. Wilson about whether he would sell his car to Mr. Wilson or not. Since Mr. Wilson suspected Myrtle of loving someone other than him, he thought it was wise to buy a car to move West with his wife.
When "[Gatsby and Daisy's] eyes met…they stared together at each other, alone in space" (125), Tom discovers that Gatsby and Daisy love each other from their passionate stare. Although Tom was suspicious about Gatsby and Daisy's relationship before, this event makes Tom certain of Gatsby and Daisy's love.
Daisy is the Golden girl and the treasure that both Gatsby and Tom want. When Gatsby says that "Daisy's voice is full of money," he means that Daisy is his dream that he hopes to achieve. This shows that Gatsby's vision lacks realism, and he is unable to perceive the true character of Daisy. Fitzgerald puts those words in Gatsby's mouth and not in Nick's in order to emphasize the value of treasure to Gatsby. Gatsby came from a very poor background, so he tried to reinvent himself and get rich due to his pursuit of Daisy. Having Gatsby to say that Daisy is like a treasure reveals what kind of man Gatsby really is.
Eyes play a significant role in the chapter. The eyes of Dr. T.J. Eckleburg's are indifferent and all seeing, which can be contrasted with Myrtle's gaze, which is "intense" (131), full of jealousy, and not indifferent. Myrtle has a much limited scope of seeing than the eyes of T.J. Eckleburg's because she only cares about her own problems and affairs. The eyes make the reader aware of the different perspectives on the issues that happen in chapter 7.
Both Tom and George have discovered that their wives have "some sort of life apart from [them] in another world" (130) and their shock caused Tom to be emotionally unstable and Wilson to be physically sick. They are both afraid of losing their "beloved" wives, who have turned to different men to satisfy their desires.
Gatsby's response to Tom that he did attend to Oxford for five months in an army program following the war makes Nick want to "get up and slap him on the back" (136), because Nick wants to congratulate Gatsby for being able to say the truth and not make any ambiguous replies.
Daisy was driving the car with Gatsby in the passenger seat, which hit and killed Myrtle. Tom may have prompted Myrtle to run to the car, which she thought Tom instead of Gatsby was in it. George was one of the witnesses for the accident.
In order to show the reality of the car accident, Fitzgerald needed an unbiased character to explain the event not in any other character's point of view. George was also at the place of the accident, but he could be argued to be too biased about it.
Nick means that he had realized Gatsby was taking blame for Daisy's crime. Since Nick had figured out about Gatsby's tendency when he lies, Nick knew at the moment Gatsby started to recount the accident that Gatsby was telling a lie.
Gatsby has incredible capacity for hope, but he is protecting Daisy from nothing. Gatsby does not understand that Daisy would no longer return to be together with him, and that his dream had become something that he can never achieve.
