As Robert Burton, an English scholar, once said "a blow with a word strikes deeper than a blow with a sword"" (World of Quotes, n.d.). In the history of mankind, in terms of its value there has not been any system of human communication equal to language. From the linguistic point of view, an important issue to investigate is "language which has been produced as the result of an act of communication', i.e. discourse" (Longman Dictionary of Applied Linguistics, 1992: 83). In contrast to grammar, which studies the rules that a language uses to form grammatical units such as clause, phrase or sentence, discourse concentrates on larger units of language such as paragraphs, conversations, interviews, etc. (ibid.). .
There exist two types of discourse: written discourse and spoken discourse; however, the latter is acquiring more attention and significance nowadays. Along with globalization, development of media and new technologies, as well as political and economical relations the importance of oral presentation skills that are a part of spoken discourse increases. From a business perspective, well-developed presentation skills of the personnel help the enterprise to operate more efficiently and further its promotion within the market and community it serves. In terms of politics, within the corporate world efficient presentation skills are demanded to maintain diplomatic relations, as well as to guide, motivate and persuade the public. In addition, in multicultural societies, such as the United Kingdom, the United States of America and Australia, effective presentation skills have become a requirement of professional performance (McCarthy and Hatcher, 2002: xiv). .
It is worth mentioning that in the basis of good oral presentation lies a well-structured and well-prepared textual message which is often firstly created in written form. The text written for presenting differs from a common text for publishing in numerous ways regarding both grammar and style.
