Unit 2 Saving the Earth-Topic 3 What can we do at home to protect the environment -Section D-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：1035a).zip

保护森林，熊熊有责 What can forests do for us? Forests are the lungs of the earth. 采挖致3万多亩森林遭破坏 采挖致3万多亩森林遭破坏 Its everyones duty to protect forests 保护森林，人人有责 Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment? Section D 科普科普2011课标版九年级英语上册课标版九年级英语上册 Knowledge aims 1. Learn and master some new words and useful expressions; 2. Talk about the importance of forests; 3. Review Compound Sentence(并列句），并列句），pay attention to and、or、but and while. Moral aims Learn more knowledge about the environmental protection and try to be a greener person. 1. Listen to 1a , underline the key points and the difficulties. 2. Try to answer the following questions. 1.How do you understand “Forests are the lungs of the earth”? 2.What difficulties do tree planters face when they plant trees ? 3.Why do they plant different kinds of trees ? p49-reading.mp3 How do you understand “Forests are the lungs of the earth”? Forests can remove carbon dioxide from the air and make oxygen. What difficulties do tree planters face when they plant trees ? (1)The weather may be very hot and dry or it may be very cold and wet. (2)There are often many insects that bite these planters on their legs, arms, and faces while they work. (3)They carry heavy bags of small trees, and working in the mountains can be dangerous. Why do they plant different kinds of trees ? They plant different kinds of trees so that birds and animals can live in the forests. 1. Read 1a again and find out the topic sentence of each paragraph 2. Discuss the usage of the key points and the difficulties. Topic Sentence Paragraph 1: _ Paragraph 2: _ _ Paragraph 3: _ Forests are the lungs of the earth These young men and women face many difficulties when they plant new trees. Tree planters are changing the world. Solve the difficulties together Finish the following exercise. Language points bite sb on the +身体部位 There are many insects that _ them_ their legs while they work. even though = even if, 即使，尽管，虽然 _tree planting is very difficult, they love their work. so that =in order that，为的是，目的是 They plant different types of trees _birds and animals can live in the forests. bite on Even though so that Grammar Compound Sentence Recycling can protect the environment, _ it can save money, too. Some things we have done are good for the earth _ some are bad. We should do everything to protect it, _ well be punished and lose our home. people produce power from coal, _ it is very dirty and causes acid rain . and while or but 并列句（并列句（ Compound Sentence） 并列句是由并列连词把两个或两个以上的简单句连并列句是由并列连词把两个或两个以上的简单句连 在一起构成的句子。连词前可用逗号，也可不用逗在一起构成的句子。连词前可用逗号，也可不用逗 号。号。 表并列关系常用连词：表并列关系常用连词：and（并且）（并且） 表转折关系常用连词：表转折关系常用连词：but（但是）、（但是）、while（然而（然而 ） 表选择关系常用连词：表选择关系常用连词：or（否则）（否则） ( ) 1. Cross the road carefully, _ youll keep yourself safe . A. so B. or C. but D. and ( ) 2. Hurry up, _ youll be late for the concert . A. or B. so C. but D. and （祈使句，（祈使句，or / and +句子）句子） 中考链接中考链接 D A Writing exercise 森林对我们非常重要，没有森林地球就无法呼吸。但在一 些地方，大片森林被砍到，我们必须做一些事情来保护森 林资源。请根据以下提示完成作文： 1、节约用纸，减少使用一次性筷子（throw away chopsticks)和纸杯(paper cups); 2、多种树； 3、禁止砍伐树木。 You can begin like this: Forests are very important to human beings. Lets do something to protect and save them. First, . Second,. Third,. All in all, Its our duty to Memorize the useful expressions and key sentences that we learnt today. Finish Section D in the workbook. Finish the composition and hand it in. Thank you! What can forests do for us? UnitUnit 2 2 TopicTopic 3 3 SectionSection D D .Teaching.Teaching aimsaims KnowledgeKnowledge aimsaims 1. Learn and master some new words and useful expressions; 2. Talk about the importance of forests; 3. Review Compound Sentence(并列句） ，pay attention to and、or、but and while. MoralMoral aimsaims Learn more knowledge about the environmental protection and try to be a greener person. .The.The keykey pointspoints andand difficultdifficult pointspoints 1.1. KeyKey points:points: WordsWords andand phrases:phrases: dry, remove, place, cut down, so that, even though Sentences:Sentences: The weather may be very hot and dry or it may be very cold and wet. They carry heavy bags of small trees, and working in the mountains can be dangerous. Even though tree planting is very difficult, they love their work. Grammar:Grammar: Compound sentence 2.2. DifficultDifficult pointspoints： Forests were cut down to provide wood to build houses. There are often many insects that bite these planters on their legs, arms and faces while they work. Even though tree planting is very difficult, they love their work. . . LearningLearning strategiesstrategies 主体探究，导学反馈 . TeachingTeaching aidsaids Pictures 、PPT and so on. . TeachingTeaching proceduresprocedures StepStep 1 1 PresentationPresentation 1.Talk about the cartoon BoonieBoonie BearsBears(熊出没), lead to the new lesson .Lead students to say,“Its everyones duty to protect forests” 2.Show the teaching aims. StepStep 2 2 WorkWork alonealone 1. Listen to 1a, underline the key points and the difficulties. 2. Try to answer the following questions. StepStep 3 3 GroupGroup workwork 1. Read 1a again and find out the topic sentence of each paragraph. 2. Discuss the usage of the key points and the difficulties 3. Encourage students to say their answers bravely. StepStep 4 4 ClassClass workwork 1. Solve the difficulties together 2. Finish the following exercise PayPay attentionattention to:to: bite sb on the +身体部位 even though = even if, 即使，尽管，虽然 so that =in order that，为的是，目的是 CompoundCompound SentenceSentence：andand、oror、butbut and whilewhile. . StepStep 5 5 PracticePractice 1.中考链接 2.Writing exercise. Let students write down the composition and the teacher checks StepStep 6 6 HomeworkHomework 1. Memorize the useful expressions and key sentences that we learnt today. 2. Finish Section D in the workbook. 3. Finish the composition and hand it in. StepStep 7 7 summarysummary We have only one earth, so each of us must try our best to protect it. Lets take actions. The earth will become more and more beautiful. 教学反思：教学反思：We have finished this topic. We have learned how to combine compound sentences and give suggestions. The most important thing is that we have learned how to be a greener person. I wish that everybody can make a contribution to protecting the environment.