* Interjection: This is the most common usage. "Gee" is used as an expression of surprise, amazement, or mild disappointment. For example: "Gee, that's a big dog!"
* Adverb: Less common, "gee" can function as an adverb, often meaning "very" or "extremely." For example: "He was gee happy about the news."
It's important to note that "gee" is considered informal language and not widely used in formal writing.