The document discusses focusing sentences and introducing new information when giving presentations. It explains that "given" information, which the listener already knows, typically goes at the beginning of a sentence, while "new" information goes at the end. It provides examples of rearranging word order to focus on a particular point, such as a person, object or time. Structures for introducing new topics are presented. The document also discusses clarifying points when speaking, giving examples of expressions that can be used.