In order to discover the mental mechanism in the process of understanding and using of parody,with the guide of "mental model based pragmatic inference",this paper studies the understanding and generation of parody in the perspective of cognitive pragmatics by using the theoretical frameworks of explicit-implicit expression and autonomy-dependence.

Thereof,the common good of predication is not the direct cause of ethical behaviors,but only the specie or form of them.

In view of the knowledge that the sentence predication is the essential embodiment of the language communication function, this dissertation emphasizes the effects on the sentence predication of the Cantonese utterance particles at the end of the sentence.