* Adverb: This is the most common usage. It expresses contrast, opposition, or surprise.
* Example: "I haven't finished my work yet."
* Conjunction: It can connect clauses, suggesting a contrast or expectation.
* Example: "He's only a child, yet he's incredibly mature."
* Pronoun: This is less common, but "yet" can stand in for a previously mentioned noun phrase.
* Example: "He promised to come, and yet he never showed up."
To determine the part of speech of "yet" in a sentence, consider its role and function.