Abstract: Pragmatics and linguistic logic have been applied to resolve the problem of how to make pragmatic inference on the basis of syntax and context so that the meaning of the utterance could be defined. Pragmatic inference in the daily utterance understanding is a default rcasoing on the basis of cognitive context ,which is a double inferential system. In this system, there is a small inferential system embedded in the big one, and the manifest and default contexts in the cognitive context function as explicit p...