t is to inform, you act as a teacher, your goal is to communicate information clearly, accurately, and interestingly. When your general purpose is to persuade, you act as an advocate, your goal is to win listeners over to your point of view.РOnce you know your topic and general purpose, you must focus in on a specific purpose that you can express as a single infinitive phrase. The phrase should indicate precisely what your speech plans to achieve.РThe central idea refines and sharpens your specific purpose. It is a concise statement of what you will say in your speech, and it usually crystallizes in your thinking after you have done your research and have decided on the main points of your speech.. The central idea usually conveys the main points to be developed in the body of your speech.
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