Narrative writing recounts a personal experience based on something which really happened or might really have happened. All details work together in a integrated way to create a complete story with beginning, development and turning point, and resolutio n.
Imaginative writing invents a situation, perspective or story based on the writer's imagination. The writer may create a scene, situation or character, may predict what might happen under hypothetical circumstances, or use his/her creativity to solve a h ypothetical problem. The writer may use his/her knowledge of the world to bring a special flair or flavor to the writing, but is not bound by the constaints of reality. Imaginative writing may contain elements of fantasy. The key question, however, is not how fantastic it is, but rather how inventive is it?
Expository writing gives information, explains something, clarifies, or defines. The writing teaches, reveals, informs, or amplifies the reader's understanding through a carefully crafted mix of key points and critical support.
Persuasive writing attempts to convince the reader that a point of view is valid, or to persuade the reader to take specific action. It is based on a topic that is limited in scope (and therefore manageable), and that is debatable -- a topic about which there could be more than one point of view. Persuasive differs from expository writing in that it does more than explain or enlighten; it also takes a stand, and endevors to persuade the reader to take the same stand.