In addition, if you express ideas that are original and intelligent, you will show what Aristotle would consider your intellectual character. You are displaying habits of thought to an audience which sees something interesting and worth listening to with trust. The preview should end with a transition, a brief phrase or a pause to signal to your audience that you are moving out of the introduction and into the body. The body follows and is itself structured by a mode of organization, a logical or culturally specific pattern of thinking about ideas, events, objects, and processes. Having a mode of organization means grouping similar material together and linking the component parts together with transitions.
Good transitions show the relation between parts of a speech.
They display your logic. One special type of transition is called the internal summary, a brief nutshell restatement of the main point you are completing. In the body, the fewer the main points the better. For short classroom speeches, under 10 minutes, you shouldn't have more than three main points. For longer speeches, you probably don't want more than five.