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2019-2020年八年級英語下冊 Unit2 Lesson 13教案 冀教版 　　Lesson 13 Why are plants important? 　　Learning aims: 　　1. Remember the new words: air, energy, die, heat, nothing, bamboo, kilogram, shade, carry away, make…into. 　　2. The important sentences: 　　① Trees help clean the air. 　?、?Donuts dont grow on the trees! 　?、?All plants take energy from the sun and make it into food. 　　④ Without food, they would have nothing to eat and they would die. 　　Learning important and difficult points: 　　1. 區(qū)分短語in trees 與on trees。 　　2. Master “Why are plants important?” 　　Learning method: 　　Listen, say, read and write. 　　Learning steps: 　　Step 1. TalkingTalk about: Why do we need trees? What kind of things can plants do? 　　Step 2. LearningLearn new words. 　　Step 3. ReadingRead the dialogue first. Then find out the useful expressions. 　　1. talk about2. clean the air3. on trees/in trees4. carry…awayStep 4. PracticePractice the dialogue in pairs. 　　Step 5. Do exercisesStep 6. HomeworkWhy do we need plants? Find three answers to these questions.