Chapter 1 Introduction I.Teaching Objective: 1.Develop the student's awareness of the importance of discipline of ecology and student's interests in ecology. 2.Help the students to master concept of ecology and research objectives of the discipline 3.Help the students to overcome difficulties both in psychology and linguistics in bilingual teaching. IL.Focal Points and Difficulties in the Chapter(教学重点和难点) 1. Focus Concept of ecology and main hot topics in ecology 2.Difficulties Develop student's interests in ccology Methodology Powerpoint presentation will be the main method.Blackboard will be an assistance.Fifteen minutes'discussion will be arranged.Some beautiful diagrams have been prepared for visualization. V Presentation(课堂讲解，学时分配为2学时左右) Step 1.Warm-up Activity List the main ecological problems both in China and all over the world Let the students have a understanding about importance of discipline of ecology in the chapter. Step 2.The students are required to finish reading the whole text before the class and try to understand the major points of the chapter.The students are supposed to underline the difficult words or structures and raise their questions concering any difficulties their may have in their understanding of the text,the teacher is