What Should Be The Speaking Style In The Oral Presentations?

Develop your own speaking style, as it is important in a good presentation. Speak slowly and clearly, and loud enough so that every one could hear you. The speaker must remember the "3S" formula for good speaking: "stand up" so that you can be seen, "speak up" so that you can be heard and "shut up" so that you can be appreciated. Pauses attract and thus refocus the attention of audience.
One task of the speaker is to maintain the audience's interest . Changes in voice can refocus attention. Raise voice pitch for more important words and allow dropping for less important ones. Avoid speaking too quickly and pause occasionally. When you begin a new point, use a higher pitch and volume and slow down for key points. Listeners will recognize a shift and listen to discover why you've changed. Reading from the manuscript should be avoided. However, there may be certain points that require reading, which should be given a lively accent – vary the tone of your voice and vary your intonations and rate of speech.
There is no need to rush the presentation by speaking too fast. Effort should be made not to go over the time allotted for the presentation.