Unit 2 Saving the Earth Topic 2 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“环境问题与保护”主题，核心知识点包括臭氧空洞、温室效应等环境问题及hole, form等词汇，通过复习不定代词导入，结合臭氧分子结构图、太阳辐射关系图和问题链衔接新旧知识，提供词汇卡片、例句模板等学习支架。 亮点在于融合语言能力（阅读段落标题匹配、指代题训练，写作模板助成短文）、文化意识（全球环境问题认知，培养环保责任感）和思维品质（污染成因与危害分析表，逻辑构建能力），如用carbon dioxide分子结构图直观解释“blanket”比喻。学生能提升语言运用与环保意识，教师可直接使用丰富练习、结构图等资源提高教学效率。

Topic 2 All these problems are very serious Unit 2 Saving the earth Section C 行业PPT模板http:///hangye/ 1.Knowledge aims： 掌握本课的重点词汇和短语，初步感知定语从句。进一步学习各种污染对地球造成的危害和造成这些污染的原因。 2.Skill aims: 能读懂有关环境问题的文章。能根据不同的阅读目的，运用简单的阅读策略获取信息。能正确运用网络资源获取需要的信息。能用英语书面的形式表达环境问题的成因及危害。 3.Emotional aims: (optional) 通过学习，了解环境现状，帮助学生树立绿色环保意识。 4.Culture awareness: (optional) 了解各种环境问题，如臭氧空洞，温室效应等，意识到环境问题的严峻形势。 Teaching aims (1)________ of us knows how to stop the bad behavior. (2) I knocked on the door but ___________ answered. (3) Some of these books are better than__________. (4) She was driving the car with one hand and wiping the window with the _______. (5) They are beautiful but I am looking for ___________ useful. (6) Is there ___________ you can do to help her? (7) There’re 5 000 people living here and almost _________has his/her own car. (8) He’s cleverer than ____________ I know. (9) I’ve looked __________ but I can’t find it. Fill in the blanks using something, anything, others, nobody, everyone, anybody, everywhere, none, other. Revision None nobody others other something anything everyone anybody everywhere hole ozone layer carbon dioxide radiation directly form blanket In our daily life, we should face more environmental problems. Can you say something about them? cities, pollute, health problems factories, the land and the air, dead What can we do to protect our environment ? In our daily life, we should face more environmental problems. Can you say something about them? cut down, millions of, take away the earth, become desert 拿走 People have cut down millions of trees. The rain takes away the earth. So forests have become ______. deserts [ˈdezəts] n. 沙漠 escape from sw. rise →rose→risen the greenhouse effect In our daily life, we should face more environmental problems. Can you say something about them? oxygen a special kind of oxygen called “ozone” (O3) 氧气 refer to In the passage, “blanket” refers to _______. A. B. C. ______________ In big cities, cars and buses have polluted the air. Now many people in cities have health problems. _______________ Factories have also polluted the land and the water. As a result, many rivers and lakes are now dead. ______________ Around the earth, there's a special kind of oxygen called “ozone”(O3). It is important to the earth. But now air pollution is destroying it and making a very big hole in the ozone layer. Too much harmful radiation from the sun passes through the hole and reaches the earth directly. This is very dangerous because this kind of radiation can cause cancer. Traffic Pollution Factory Pollution The Ozone Layer _________________ Carbon dioxide (CO2) in the air has increased a lot. It mainly comes from burning oil, coal and wood. This has formed a blanket around the earth. The heat from the sun can't escape so the temperature is rising. This is called “the greenhouse effect”. It causes the level of the oceans to rise and the climate of the earth to change. All these problems are very serious, so we must do something now. More Carbon Dioxide Surf the Internet to collect more information about environmental problems and effects. Then discuss the information in groups and take notes. Combine the key points in 1c and 2 to form a short passage and pay attention to the proper linking words. Read 1a and complete the following tasks. 1. Choose suitable titles for Paragraphs 2-6. Then write it down in front of each paragraph. A. Traffic pollution B. Factory pollution C. Fewer trees D. The ozone hole E. More carbon dioxide 2. What does our planet mean here? A. The sun. B. Mars. C. The moon. D. The earth. ※ 3 4 2 5 6 3. In the passage, blanket refers to ____. A. carbon dioxide around the earth B. the ozone layer in the sky C. the forests around the world D. pollution all over the world 4. The word it in Paragraph 5 refers to ____. A. CO2 B. O3 C. O2 D. H2O 5. What is the best title for this passage ? A. Environment Problems B. Pollution on the Earth C. Hope for the Future D. The Greenhouse Effect ※ ※ ※ Complete the notes according to 1a. Problem Effect on the environment fewer trees forests become deserts, animals and plants disappear traffic pollution greenhouse effect, level of oceans rising, climate change … … cars and buses pollute air, health problems pollute land and water, rivers and lakes dead harmful radiation reaches the earth, cause cancer factory pollution ozone hole more CO2 As we all know, water pollution is becoming more and more serious. Some factories pour waste water into the rivers. As a result, it makes the water dirty and smell terrible. Most of fish in the water have died and we can’t swim in the water. Water is very important to human beings, so we should do our best to protect and save it. Luckily, our government is taking measures to protect the water from pollution. You can write it like this: We learn: 1. Some words: hole, form, rise 2. Some phrases: take away, refer to 3. Some sentences: All these problems are very serious, so we must do something now. We can: 1. Talk about the harm of pollution. 2. Combine the key points to form a short passage. Summary 1.Read 1a. 2.Memorize the useful expressions and key words which we learn today. 3.Finish Section C in your workbook. 4.Review Section A-C and preview Section D. Assignment Exercises: 1.他不听妈妈的话,结果,他失败了。 He didn’t listen to his mother. ___ ____ _______, he failed. 2.由于他的懒惰,他考试失败了。 He failed the exam ___ ____ __________ ____ as a result of his laziness(懒惰). 3.太阳从东方升起。 The sun______in the east. 4.请举手。 Please ______ your hand. As a result As a result of rises raise Thank you Lavf57.62.100 $