第一章Chapter 1 Invitations to LinguisticsTeaching aims: let the students have the general idea about language and linguistics.Teaching difficulties: design features of language ; some important distinctions in linguisticsTeaching procedures1. language1.1 Why study language?为什么学习语言A tool for communication交流的工具An integral part of our life and humanity 人类生活和人性中不可或缺的一部分.If we are not fully aware of the nature and mechanism of our language, we will be ignorant of what constitutes our