Objectives At the end of this unit you will >1. become familiar with cognitive linguistics >2. know categorization; category prototype construal; conceptual; metaphor; conceptual metonymy; image schema; iconicityObjectives：  At the end of this unit you will  1. become familiar with cognitive linguistics；  2. know categorization; category; prototype; construal; conceptual; metaphor; conceptual metonymy; image schema; iconicity