八年级英语上册 Unit 2-3教材分析和教法建议课件 北师大版.ppt

第二、三单元教材分析和教法建议 My dog is in the garden. He is wagging his tail, his mouth is open and he is looking at me. What is he trying to tell me? Jane Roberts reports. 1. 生词 wag 怎么处理? 2. 作者写这段的目的? 做法一: What does “ wagging his tail ” mean?/ wag 什么意思? 做法二: My dog is wagging his tail. Is he wagging his tail? What is he doing? 学生已有生活经历新的语言表达方式帮助建立联系 People have always been interested in animal communication and scientists have done a lot of research on this subject. Most municate by smell. Dogs are famous for this . When a dog walks outside, it learns about other dogs by smelling things . Dogs have helped the police for a long time, too. They can find missing people by using their fantastic sense of smell. Mice have an excellent sense of smell too . Scientists have even trained them to find landmines . Scientists have discovered that even ants use smell . They use smell to tell other ants where the food is .理解句子间逻辑关系 Most municate by smell. _____ When a dog walks outside, it learns about other dogs by smelling things. _____ They can find missing people by using their fantastic sense of smell. ______ Scientists have even trained them to find landmines. Scientists have discovered that even ants use smell. _______ A. Dogs are famous for this. B. Dogs have helped the police for a long time, too. C. Mice have an excellent sense of smell too. D. They use smell to tell other ants where the food is. Ways of communi- cation Kinds of animals Why do municate? by smell dogs mice ants by sound by body language Everyone has heard birds singing. Research has shown that many other animals use sound to communicate. Frogs and insects communicate with sounds . Usually the “ gentlemen ” make sounds to invite the “ ladies ”. Whales and elephants also use sound municate. These sounds can travel very far through water or the ground. However, it is not possible for humans to hear some of the sounds. They are either too