课题Unit 13 were trying to save the earth! Section A 1a 2d话题 Protecting the environment功能 Talk about pollution and environmental protection教学目标知识技能1. Target language: Were trying to save the earth.People are throwing litter into the river.The river used to be so clean.Everyone should help to clean up the river.2.Grammar: Present progressive, used to, modal verbs3.Words and expressions;(1)Curriculum words: litter, bottom, fisherman (2)Useful expressions: be full of, putinto, throwinto, clean up, play a part in, close down 2. 过程方法 According to designing some tasks, to train students listening ability and to train students communicative competence3. 情感态度Everyone should keep our rivers clean.4. 学习策略Listening for key words, transforming information.重点Target Language难点1How to train students listening ability 2 How to train students communicative competence教学内容及问题情境学生活动设计意图1a. To introduce Ss to the unit goal, talk about pollution and environmental protection.Picture:The four pictures show different forms of environmental pollution. The first picture on the left shows an airplane flying over some houses. The airplane seems to be flying a quite a low altitude, so the noise level must be quite high foe the people living in these houses. This is considered noise pollution. The second picture shows some vehicles give out exhaust fumes and causing air pollution. In the third picture, we see big chimneys giving off a lo of smoke and polluting the air. The last picture shows a rubbish dump hat pollutes the environment around it. What other things cause pollution?Ask Ss to complete the activity as a class, then work in pairs to think of more words to add to the lists for each column.1b. To help Ss recognize the target language in natural speech.Everyone needs to play a part:In the conversation, the boys are talking about the river in their town being polluted by litter and industrial waste. One of them wants to write to the government about the problem, but the other boy wisely says that cleaning up the river is everyones responsibility, not just the governments. Predicting the answersSs work in pairs to predict the answers to the activity, then play the recording for Ss to fill in the gaps and review answers as a class. 1c. To give Ss guided practice in using the target language to talk about pollution and environmental protection.Review of used to and should. Look at the pictures and write these words in the boxes below. Then write other words you know.Work in pairs. Listen and circle the words in 1a that Victor and Ginny use to describe the animals.呈现本课重点词汇，认知，理解，记忆。通过语言交际让学生掌握本节课所学内容 通过听力训练，提高学生的听力能力。板书设计 Unit 13 were trying to save the earth! Section A 1a 2dWere trying to save the earth. (Present progressive)People are throwing litter into the river. The river used to be so clean. (Used to )Everyone should help to clean up the river. (Modal verb)