* Formal: "The student submitted a well-researched essay on the history of the American Revolution."
* Informal: "I have to write an essay for English class about my favorite book."
* Descriptive: "The essay was filled with vivid imagery and compelling arguments."
* Comparative: "Her essay was much more persuasive than her classmate's."
* With a specific type of essay: "She wrote a persuasive essay arguing for stricter gun control."