Answer
1. Flashbacks - The use of flashbacks helped to reveal the past of the characters, especially Gatsby's past, which helped to explain his motivations and actions.
2. Symbolism - The use of symbolism, such as the green light, the valley of ashes, and the eyes of Dr. T.J. Eckleburg, helped to convey deeper meanings and themes in the story.
3. Cinematography - The use of different camera angles and shots helped to create a sense of tension and drama, especially during the party scenes.
4. Soundtrack - The use of music helped to set the mood and tone of the film, and also helped to convey the emotions of the characters.
5. Lighting - The use of lighting helped to create a sense of atmosphere and mood, especially during the nighttime scenes.
6. Costume design - The use of costume design helped to convey the social status and personality of the characters, especially the extravagant outfits worn by Gatsby and his guests.
7. Editing - The use of editing helped to create a sense of pacing and rhythm in the film, and also helped to emphasize certain moments and themes.