Unit 2 Saving the earth. Topic 3 Section C 课件 2025-2026学年仁爱科普版（2012）英语九年级上册

该初中英语课件围绕“环保能源与个人行动”展开，核心涵盖biogas、electric vehicle等能源的优缺点及“too...to...”“require”用法等语法点。通过“如何成为环保人士”的生活问题导入，衔接科学家开发新能源的内容，构建从个人经验到社会措施的学习支架。 其亮点在于任务型活动贯穿始终，如1c表格填写需分析能源利弊培养思维品质，语法及时练习（如require用法题）提升语言能力。融入“短时高频”“小组学习”等策略发展学习能力，学生能提升环保主题英语综合运用能力，教师可借助系统任务设计高效教学。

Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment? Section C 1 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Review 1. The bread in this shop is more delicious than _ in that one. A. it B. one C. those D. that 2. The two boys _ greener persons since then. A. are B. will be C. have been D. have become 3. Can you tell us _ there? A. what are you doing B. what you are doing 4. You’d better walk or ride a bike instead of _ a bus or a taxi if you travel a short distance. A. to take B.taking 5. We ought to take a cloth bag when going shopping.(改为否定句&一般疑问句) We _ _ take a cloth bag when going shopping. _ we _ take a cloth bag when going shopping? Yes, we ought. D C B B Ought to oughtn’t to Review How can we become a greener person? Turn off the lights when we leave a room. Walk or ride a bike instead of taking a bus or a taxi. Take a cloth bag when we go shopping. Don’t drive a car if you travel a short distance. Write on both sides of the paper. Don’t use the things that can be used only once. After we wash faces, we can use the water to wash clothes. Turn off the TV set while we are away. … 3 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 课文关 4 What do scientists do to protect the environment? They are studying new ways to produce power. 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 It’s an electric car. It works well, but it’s too small to hold many people. electric (adj.) — electricity (n.) What’s it ? What do you think of it? It’s a maglev train. Its advantages are quiet, fast and clean, but it’s too expensive. What’s it ? What do you think of it? 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 It’s a device to make biogas. China is one of the first countries in the world to use biogas technology . What’s it ? What do you think of it? Task 1 Work alone Read for main information 9 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Look and match. paragraph 2 paragraph 3 Paragraph 4 A. acid rain B. nuclear energy C. biogas A C B adj.原子核的, 原子能的 酸雨 1b Read and match. 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Task 2 Class work Read for detail 12 Paragraph 1 In many countries , people produce power from coal, but it is very dirty and causes acid rain. Some countries use nuclear energy to produce power. However, nuclear power can be very dabgerous. To solve the energy problem, people all over the world are looking for new ways to produce power. 拓展:a way to do sth. = a way of doing sth. ways to do sth. = ways of doing sth. 做某事的方法 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 ( ) It’s good that people produce power from coal. ( ) Nuclear power is dangerous. So we mustn’t use it. ( ) People all over the world are looking for new ways to produce power to solve the energy problem. Read para.1 and mark True (T) or False (F). T F F 14 Paragraph 2 _China is one of the first countries in the world to use biogas technology. Farmers recycle straw, grass and animal waste to make biogas. This renewable energy is used in people’s everyday lives. Its key disadvantage is that the process requires a long time (up to 30 days) and the cost is high. C 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Isn’t China one of the first countries in the world to use biogas technology? What do farmers do to make biogas? What’s the advantage of biogas? How long does the process of making biogas require? How many disadvantages does biogas have? Yes, it is. They recycle straw, grass and animal waste to make biogas. It’s renewable and used in people’s everyday lives. A long time (up to 30 days). Two. One is the long process, and the other is the high cost. Read para.2 and answer. 16 Paragraph 3 _Electric vehicles were developed in the 1990s. On April 11, 2010, a new kind of electric vehicle named “Yezi”was shown in the 2010 Shanghai World Expo. It produces electricity from the sun, the wind and CO2. It can not only protect the environment but also save energy. It’s too small to hold many people, but larger models will be developed in the near future. A 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Read para.3 and fill in the blanks. Electric vehicles were developed in the 1990s. On April 11, 2010, a new kind of electric vehicle named “Yezi” was shown in the 2010 Shanghai World Expo. It produces electricity from the sun, the wind and CO2. It can not only protect the environment but also save energy. It’s too small to hold many people, but larger models will be developed in the near future. develop name show 由……生产电能 不但 而且 hold develop 18 Paragraph 4 _In China, the best-known maglev train is the German-built one in Shanghai. It takes people just 7 minutes to go to the airpore 30 km away. The train can reach a top speed of 431 km per hour. It is quiet and quick. There is no wheel noise, because there are no wheels. Maglev trains are very energy-efficient and do not pollute the air. However, maglev guide paths are much more expensive than traditional steel railways. B 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 1.去30公里以外的飞机场只需花费人们七分钟的时间。 It takes people just 7 minutes to go to the airport 30 km away. 2.火车最高时速能够达到每小时431公里。 The train can reach a top speed of 431 km per hour. Read para.4 and translate the sentences. 20 Item Advantage Disadvantage biogas electric vehicle maglev train renewable long process and high cost save energy, no pollution too small to hold many people quiet, quick, energy-efficient, no pollution much more expensive 1c Read 1a and complete the table. 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 1a Look, listen and say. 22 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. 2a Read the passage below. 23 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 run out /run out of 用完,耗尽 (run-ran-run) 物 + run out 主语为物,且无被动。 人 + run out of 主语为人 我们的食物已经用完了。 Our food has already _. = We have already _ the food. run out run out of 24 2a Look and match 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. 25 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 2b Take notes on your discussion and write a passage with them. You may begin like this: Sunlight can produce a lot of energy. People began to use the energy from the sunlight in different ways many years ago… 26 You can write it like this: Sunlight can produce a lot of energy. People began to use the energy from the sunlight in different ways many years ago. We can use it to warm the house in the winter, to heat the water for baths, and to produce electricity. What’s more, we can even use it to run vehicles directly in the near future. As is known to us, the energy from the sunlight has a lot of advantages. For example, it is clean, renewable and non-polluting. Besides, it does no harm to our nature. So we’d better use it as much as possible. 27 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 语法关 28 Key points 1. China is one of the first countries in the world to use biogas technology. be the first + n. + to do sth. 是第一个做某事的...... be the last + n. + to do sth. 是最后一个做某事的...... eg. (1) 她是最后一个离开教室的人。 She is _ _ one _ (leave) the classroom. (2) 我是第一个到教室的人。 I am _ _ person _ (reach) the classroom. (3) China is the first country _ 5G technology. A. achieve B. to realize C. achieving D. realizing the last to leave the first to reach B back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 2. Its key disadvantage is that the process requires a long time (up to 30 days ) and the cost is high. key adj. 主要的,关键的 disadvantage n. 缺点 process n. 步骤,过程 v.加工,处理 require v.需要,需求 up to 达到 the cost is high 成本高 require 有3种用法: (1) requre/ need + sth. “需要某物” eg. 我需要水。I requre/need some water. (2) sth.+ require + (doing) sth. “某事需要被做” 主语是物,用动词ing形式表被动。 e.g.The floor requires cleaning. 地板该打扫了。 你的衣服需要洗了。/ 我的衣服该洗了。 Your clothes require _ (wash). (3) require sb. to do sth. = ask sb. to do sth. 要求某人做某事 也可以用被动形式表达:sb. + be required to do sth. 某人被要求做某事 My mother asks/requires me_ (buy) some salt for her. = I am required _ (buy) some salt for my mother. washing to buy to buy back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 cost 的2种用法: (1) cost v. 花费 (cost-cost-cost) sth. cost too much/too little. 译为“花费”时,用“多/少”来描述。 sth. cost sb. + 钱 (做谓v.时,主语必须是物。) eg. The gold watch cost Mrs. Zhou 30 thousand yuan. The gold watch cost Mrs. Zhou _. A. too high B. too much (2) cost n. 成本 译为“成本”时,用“高/低”来描述。 eg. The cost of the gold watch is _. A. too high B. too much = The gold watch costs too much. 思考: The gold watch is _. A. expensive B. too much C. too high (物品讲贵贱, 成本讲高低。) B A A back 及时练习1 1. They required us _ the plan. A. carry out B. carring out C. to carry out D. carried out 2. These beautiful flowers require _. A. to water B. watering C. watered D. water 3. The cost of building the bridge is _. A. expensive B.cheap C. too high D. too little 4. Building the bridge costs _. A. expensive B. cheap C. too low D. too much 5. His new computer is _. I also want to buy one. A. expensive B. dear C. cheap D. low C B C D C back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 3. It can not only protect the environment but also save energy. 以下3对连词,在连接两个主语时,采用“就近原则”。 not only... but also... (是 both... and... 的同义词组) neither...nor... (是 both... and... 和not only...but also...的反义词组) either...or... both...and... 连接主语时,用作复数。 eg. Both I and he _ (be) at home. Neither I nor he _ (be) at school. Either he or you _ (be) in the dinning hall. Not only she but also I _ (be) on the playground. are is are am back 及时练习2 1. For her, some clothes in the shop are too big, others are too small. (改为同义句) The clothes in the shop are _ too big _ too small for her. 2. Not only the students but also the teacher was against the plan. 改为同义句:_ the students _ the teacher _ against the plan. 改为否定句:_ the students _ the teacher _ against the plan. 3. 这孩子既健康又活泼。 (完成译句) The child is _ _ healthy _ _ lively. either or Both and were Neither nor was not only but also back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 4. It’s too small to hold many people. (1) hold v.容纳,抓住,举行 hold on, please. 别挂断,请稍等。 翻译句子: 1. Tiananmen Square can hold about one million people. 2. Hold the baby a minute, please. 3. They will hold a meeting to discuss the problem tomorrow. (2) too + adj. + to do sth. 太......而不能...... (常与以下句型作同义替换) not+ adj.(用原句的反义词 )+ enough + to do sth. so + adj./adv. + that 从句 such + (a/an) + ... +n. + that 从句 back 及时练习3(同义句转换) 1. My sister is too young to go to school. = My sister isn’t _ _ to go to school. 2. The dinning hall is so small that it can’t hold fifty people. = This is _ a small dinninng hall _ it can’t hold fifty people. = The dinning hall is _ small _ hold fifity people. = The dinning hall isn’t _ _ to hold fifty people. old enough such that too to big enough back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 5. It takes people just 7 minutes to go to the airport 30 km away. “三个花一个付” (1) 人 + spend + money / time + on sth. /(in) doing sth. (2) 人 + pay + money + for sth. (3) 物 + cost + (sb.) + money (4) It + takes + (sb.) + time + to do sth. (it 是形式主语,to do sth. 是真正的主语) spend — spent — spent (ABB型) pay — paid — paid (ABB型) cost — cost — cost (AAA型) take — took — taken (ABC型) back 38 及时练习4 1. 玛丽花了50块买这本书。 Mary _ 50 yuan on the book. = Mary _ in _ the book. = Mary _ 50 yuan for the book. = The book _ Mary 50 yuan. 2. — Have you finished rebuilding your house? — Of course. It _ us three months to do that and it also _ us quite a lot of money. A. took, cost B. cost, took C. spent, cost D. spent, paid spent spent buying paid cost A back 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 He studies at a college of science and _. Kris and Karl come from Europe. They’re _. The front _ of the bike was out of shape. Please call me if he _ my help. I know the place well, so let me be your _. guide , wheel, require, German, technology Exercise technology Germans wheel requires guide Summary We learn: 1. Some words: technology, wheel, steel, require, German, guide , deep 2.Some phrases: run out 3.Some sentences: (1)In many countries, people produce power from coal, but it is very dirty and causes acid rain. (2)They will never run out so they are called renewable sources. We can: Talk about the advantages and disadvantages of some kinds of energy. 新课标下的英语学习更注重实践,多年经验表明,学习缩写能有效提高应试能力。课堂观察发现,分析长难句子能有效激发学习兴趣。针对初中阶段,学习缩写能有效促进创新思维。另一方面,短时高频比长时间低效更好。语言专家指出,组建学习小组能有效促进创新思维。想要全面提升英语,建立语料库能有效加快阅读速度。关键学习策略,模仿标准发音能有效减少焦虑。持之以恒地实践这些方法定能取得显著进步。 Homework 1. Read 1a aloud&Learn the new words by heart. 2. Finish Section C in your workbook. 3. Preview Section D. Thank you! 129363.18 $