约920字。

　　高二英语 Unit 7 The sea Lessson26  Protecting the Sea教案(北师大必修3)
　　Teaching Aims:
　　1. To practice spoken English.
　　2. To practice listening for specific information.
　　3. To practice showing interest when listening to another speaker in a conversation.
　　4. To practice involving the person who is listening to you.
　　Teaching difficulties:
　　Learn to involving the person who is listening to you.
　　Teaching Aids: computer and cassette 
　　Teaching procedures:
　　Ⅰ. Warming up
　　T:  How is the sea important to people?
　　Ss: students’ answers may be various.
　　T:  Water covers about 75％ of the earth’s surface, it provides us with food and resources such as oil, natural gas and some metals. Besides the sea has a great effect on climate, therefore. The sea is very important for us. But what we have done does harm to the sea.
　　Now look at the pictures, showing students some slides about sea pollution. The teacher will ask some questions to encourage students to speak English.
　　(The purpose is to produce the sea pollution and let students realize the importance of protecting the sea.)
　　Ⅱ.Discussing
　　1. You are likely to notice something about sea pollution in your city or hometown, please talt it.
　　2. If we go on polluting the sea what is the result?
　　3. What measures do you think we should take?
　　4. What should we do as a student?
　　(Courage them to maggestions for preventing sea, river and lation)
　　Ⅲ. Listening
　　Your suggestions are good and useful and Fang Zhou and Zhi Hong are taking about the problem too. What will they say? Now let’s listen to the conversation
　　(In order to help student better understanding the conversation first do the exercise).
　　1. Listen to the tape and choose the right answer.
　　①.  What can be done about over fishing?
　　A. man-made raising fish     
　　B. In the worst areas they ban fishing for several years
　　C. control the number of fish people can catch     
　　②.  What’s the result of over fishing?
　　A. there are less fish to catch  
　　B. people can fish too much