Unit 2 Saving the Earth-Topic 3 What can we do at home to protect the environment -Section C-ppt课件-(含教案+视频+素材)-市级公开课-仁爱科普版九年级上册(编号：c0065).zip

Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment? Section C 新安县外国语初中 谢园园 1a Read and understand. Look at the pictures. Do you know what they are? Choose the right picture for each paragraph. paragraph 2 paragraph 3 Paragraph 4 Its an electric car. It works well, but its slow and cant run for long. electric (adj.) electricity (n.) Do you know it? Do you know it ? Its a maglev train. Its advantages are quiet, fast and clean, but its too expensive. 磁悬浮列车 n.技术 Do you know it ? China is one of the first countries in the world to use biogas technology . 沼气 1b Read 1a and match the words with the pictures on Page 48. A. acid rain B. nuclear energy C. biogas A C B adj.原子核的， 原子能的 酸雨 1c Read 1a again and complete the table. ItemAdvantageDisadvantage biogas electric vehicle maglev train renewable long process and high cost for its building save energy, no pollution too small to hold many people quiet, quick, energy- efficient, no pollution much more expensive than traditional steel railways Micro Course Exercise 1.Would you like to come to dinner tonight? Id like to, _ Im too busy. A. and B. to C. as D. but 2.They were surprised that a child should work out the problem _ they themselves couldnt. A. once B. then C. while D. if 3.Work hard, _ well complete the task. A. or B. so that C. and D. if 4.The shop doesnt open until 11 a.m., _ it loses a lot of business. A. for B. or C. but D. so 1.Not only Li Ming but also I _(be) students. 2. Either she or he _(learn) English. 3. Neither teachers nor students _(be) allowed to smoke. 4. Not only we but also you _(be) volunteers. 5.Not only apples but also bananas _(be) fruits 1.am 2.learns 3.are 4.are 5 .are 2a Read the passage below and match the pictures with the sentences. Then discuss in detail the use of one energy source. The sun, wind, waves and heat from deep in the earth are energy sources. They will never run out so they are called renewable sources. In 2011, about 16% of energy used worldwide came from renewable sources. The use of it is increasing rapidly each year. deep adj.深的，厚的 adv.深深地， 在深处 run out 用完，耗尽 E.g. The food has run out，lets go shopping. He has run out of food, so his children are hungry. 2a Read the passage below and match the pictures with the sentences. Then discuss in detail the use of one energy source. 1. Wind can produce electricity in many places. 2. People use sunlight to produce electricity. 3. Sea waves are used for producing electricity. 4. People use hot water or steam from deep in the earth to produce electricity and heat for factories, schools and homes. 阳光，日光 水蒸汽， 蒸汽，水 汽 imagination imagine you are a scientist or an inventor . Try to use the renewable sources to invent something. Invention Name:_ Inventor :_ Use:_ Energy_ Advantage:_ Disadvantage_ 1.Read 1a again and review the advantages and disadvantages of the new energy. 2.Memorize the useful expressions and key sentences which we have learned today. 3.Write a passage about your invention. 考点透析 1熟记下列并列连词的意义和用法。 (1)并列类：and，both.and，as well as，neither.nor，not only.but also. eg: Both Kangkang and Li Lei like English. (2)选择类：or，otherwise，either.or. Eg: Come here on time tomorrow morning，or you will miss a good chance. (3)转折类：but，still，however，yet，while，when Eg:I was glad to meet Jenny again, but I didnt want to spend all day with her. (4)因果类 so，for，therefore Eg: I have a lot to do this evening，so I cant go shopping with you. 考点警示 1. but，while不与although连连用，但yet， still可与although连连用。 2.祈使句，and/or主谓结谓结 构。 Hurry up，or youll be late. 3并列关联连词联连词 either.or，neither.nor，not only.but(also)等连连接并列分句时时，前后连连接的 成份要一致。连连接两个主语时语时 ，位于要与临临近的 主语语保持一致，就近原则则。 Not only my parents but also I am going to Beijing next week. Not only, but also 连连接两个简单简单 句，not only放句首 ，其后句子要部分倒装，but also 后语语序不变变 Eg: Not only can he run his machine, but he can repair it. Unit2Topic3Section B 教案教案 . Material analysis 本课是九年级第二单元第三话题的第三课时。主活动是 1a。1a 介绍了世 界各地的人们如何开发和利用环境友好型和资源节约型的新能源，同时也指出 了这些新能源的利用方式所存在的不足之处。在介绍的过程中，让学生学到更 多并列句的连接词。如：however, not onlybut also等。1b 通过图片匹配可 以帮助学生形象地理解比较陌生的事物。1c 培养学生归纳处理信息的能力。2a 和 2b 是两个关联性很强的任务。2a 指出人们可以利用可再生能源来发电，并 让学生讨论怎样利用这些可再生能源，然后在 2b 环节形成书面报告。这两个环 节，其实是培养学生学会作记录，并根据记录整理成短文的能力。2b 是个书面 活动，可以留作家庭作业。 .Teaching aims 1.Knowledge aims： 掌握本课的重点词汇和短语，继续学习并列句。 2.Skill aims: 学会更多连接并列句的方法。 学会在讨论中作记录，并整理记录使之成文。 能够对信息进行分类处理。 3.Emotional aims: (optional) 激发学生探索利用新能源的热情。 4.Culture awareness: (optional) 了解世界各国在开发和利用新能源方面的现状和成就。 . The key points and difficult points 1. Key points: Words and phrases: technology, renewable, disadvantage, require, German, wheel, guide, deep, run out, source, worldwide, producefrom, not onlybut also, tooto Sentences: However, nuclear power can be very dangerous. It can not only protect the environment but also save energy. Its too small to hold many people. Grammar: compound sentence 2.Difficult points： 理解文章中出现的大量专业术语。如：biogas technology, maglev trains 等。 理解文中出现的被动语态。如: This renewable energy is used in peoples everyday lives. Electric vehicles were developed in the 1990s. Its too small to hold many people, but larger models will be developed in the near future. 理解文中出现的表语从句。如： Its key disadvantage is that the process requires a long time (up to 30 days) and the high cost for its building. . Learning strategies 在 1a、1b 和 2a 中，能够根据文字描述进行图文匹配。 在 1c 环节能够根据要求获取不同的信息，并能根据所完成的图表复述文章 的大意。 要养成在讨论中作记录的好习惯，并利用记录的要点来组织短文。 利用课文中的插图和教材附录中的资料来理解课文。 . Teaching aids 教学新词的图片（如：1a, 1b, 2a 的插图、电动摩托图片、核电站图片） / PPT 白纸等。 . Teaching procedures Step 1 Lead in Watch a video about an ad, then talk about something on energy. Step2 Pre-reading Present the pictures in 1a, 1b and 2a to learn the new words. T: Now, I will show you some pictures. Try to tell me what the picture is in English. Now, look at this picture, whats it? T: Yes. Its an electric motor. I often come to school on my electric motor. What about this one? T: You are right. Its a train. People call it maglev train. Its different from the traditional steel railways. It has no wheels but it runs very fast. It can run more than four hundred km per hour. T: (Use the same way to deal with other Step3 While-reading Read 1a again and complete the table Step4 post reading 1.Work in groups, and find some important words, phrases, and sentences, then write them on the white paper. At last, choose some students to show it. 2.Teach something about compound words by micro course 3.Do some exercise on it 一选择 1.Would you like to come to dinner tonight? Id like to, _ Im too busy. and B. to C. as D. but 2.They were surprised that a child should work out the problem _ they themselves couldnt. A. once B. then C. while D. if 3.One more week, _ well complete the task. or B. so that C. and D. if 4.The shop doesnt open until 11 a.m., _ it loses a lot of business. A. for B. or C. but D. so 二填空 1.Not only Li Ming but also I _(be) students. 2. Either she or he _(learn) English. 3. Neither teachers nor students _(be) allowed to smoke. 4. Not only we but also you _(be) volunteers. 5.Not only apples but also bananas _(be) fruits 4.Finish 1c Step5 Finishing Task 2a 1: Let the Ss look at the pictures in 2a to learn the new words. 2: Let the Ss read 2a and match the pictures with the sentences. 3: Let the Ss discuss in detail about the use of one kind of energy sources. Step6. Imagination imagine you are a scientist or an inventor . Try to use the renewable sources to invent something. . Blackboard design What can we do at home to protect the environment? Section C Words and phrases： electric motor（电动摩托） maglev train（磁悬浮列车） technology require Grammar： compound sentences（并列句） conjunctions（连接词） but, however, and , not onlybut also, Sentences: However, nuclear power can be very dangerous. It can not only protect the environment but also save energy. Its too small to hold many people. , but it is very dirty and causes acid rain. German wheel guide deep run out dis+advantage=disadvantage (n) re(使)+new+able（能的）=renewable(adj) not onlybut also Homework 1.Read 1a and review the advantages and disadvantages of the energy. 2.Memorize the useful expressions and key sentences which we have learned today. 3.Write a passage about your invention.