essay

     Essay has three main parts: an introduction, several supporting paragraphs(body of essay), and a conclusion. Each part has own special purpose. The introduction provides some background information on the subject and state the main idea in a thesis statement. The introduction commonly uses general to specific, an anecdote, a quotation, ask a question, present facts and statistics. The supporting paragraphs explain and support the main idea in thesis statement. The conclusion summarizes the main points which restates the thesis statement in difference way. In conclusion you also can write comment, suggestion, warning, prediction or recommendation.
Example
Introduction by using anecdote technique
Misty, a five-month-old German shepherd puppy goes to the hospital three twice a week, but not to see veterinarian. At the Veteran's Administration hospital, Misty is helping doctors- not the other around. In what may seem like a role reversal, animals like Misty are visiting the halls of human illness to relieve a type of pain doctors can not treat. Their therapy is love, both giving it and helping others return it to them. Pets ranging from dogs to tropical fish are showing up as therapies in hospitals, nursing homes, prisons, and other institutions.