This paper discusses static rhetoric and dynamic rhetoric,their intension and extension their,content and scope the present situation and causes and necessity and importance of dynamic rhetoric,hoping that the teachers the Essentials of Chinese Broadcasting Announcing of phonetic Broadcast and An Outline of Broadcast may pay attention to it.

The teaching exchanges as a specific rhetorical activities in a certain context have their own rhetorical elements and characteristics: in certain rhetorical scenarios,the two sides of the teaching——the conductor and the recipient conduct the rhetorical interaction an.

Both rhetoric activity and explanation activity is phenomena.

This present paper mainly illuminate interactional precondition,basic,manner,primary and ultimate aim from this three point of view:rhetorical motivation,thetorical action and aim.

Yu tried to tell readers her miserable life and love by using the euphemistic rhetoric——figure of speech which serves as the poet\'s rhetorical motivation.