Unit 2 Saving the Earth-Topic 2 All these problems are very serious.-Section A-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：00155).zip

Unit 2 Saving the Earth Topic 2 All these problems are very serious. Section A . Material analysis 1.本课是九年级第二单元第二话题的第一课时。主要活动是 1a。1a 通 过 Kangkang 向他的同伴 Maria 和 Jane 抱怨恶劣的天气，引出本课的 功能意念：抱怨和责备。1b 主要培养听力策略，即重点听对话的大 意。1c 侧重于考查归纳总结的能力。在 2 中，通过“用所给词的正确 形式填空”这种题型，巩固 1a 中的重点语言点。借助 3 的图片和信 息提示，进一步形象地了解沙尘暴形成的过程。本课通过谈论沙尘 暴的成因说明了树木对环境保护的重要作用。同时也让学生了解天 气与人类活动的关系，关注全球的环境问题。 2.由于整堂课是使用希沃 5 软件来展示，所以我把希沃 5 里的内容以 pptx.的格式导出上传。 .Teaching aims 1.Knowledge aims： 掌握本课的重点词汇和短语，谈论沙尘暴的成因。 2.Skill aims: 能听懂谈论沙尘暴成因的对话。 能够从所听材料中获得有效的细节信息。 能够根据课文信息发现树的功能。 3. Emotional aims: (optional) 让学生了解环境污染的严峻形势，引导学生爱护大自然，爱护花草树木，树 立绿色环保意识。 4. Culture awareness: (optional) 通过课文的学习，让学生了解沙尘暴形成的原因和过程，关注全球的环境问 题。 . The key points and difficult points 1. Key points: Words and phrases: sand, although, sandstorm, desert, human being, reduce, completely, change into, stop from, blow/ wash away, as a result Sentences: A lot of water can be saved by forests. Although we have built “The Green Great Wall”, we still need to do something to protect the environment. Grammar: Indefinite pronoun and adverb. 2. Difficult points： 能够从所听材料中获得有效的细节信息来补全句子。 能够根据课文信息复述树的功能，引导学生爱护大自然，爱护花草树木，树 立绿色环保意识。 . Learning strategies 通过引导学生在听前阅读 1b 和 3，培养学生形成听前熟悉、预测听力材料 的学习习惯。 通过 3 中的插图预测并描述新话题，培养学生的逻辑推理能力。 . Teaching aids 关于各种污染的图片，沙尘暴的图片等。 . Teaching procedures 一Getting students ready for learning（5 mins) 1.Review the Present Perfect.(复习现在完成时) 2.Look at the pictures about all kinds of pollution and a sandstorm and let Ss guess what kind of weather it is. 二Lead-in Show the pictures of a sandstorm, talk about how sandstorm comes into being . 3Pre-listening Let the Ss talk about sandstorm according to the pictures and the given words in 1a. 4While-listening Step 1: Present the picture in 1a. Let the Ss listen to 1a once and do 1b alone. Step 2: Let the Ss listen to 1a again and complete the functions of trees in 1c. They can discuss in pairs. 5Post-listening Step 1: Let the Ss read 1a in groups and then role play it. Step2: Let the Ss read again and find the important phrases in 1a. Then write them down on the Blackboard. Step 3: Lead the Ss to complete the sentences with the correct forms of the given phrases in the box in 2. 6Finishing Task 1.Finish 2. 2.Check the answer. 3.Finish 3 to review. 7Summarizing and Assigning homework Step 1: Sum up what they have learnt in this class. Step 2: HMK: Write a passage about how sandstorm comes into being.