Unit 3 Environmental Protection Reading and Thinking课件-2025-2026学年高中英语人教版选择性必修第三册

Environmental Protection Reading and Thinking Unit 3 Pre-reading Important words: atmosphere starve wave radiation release habitable sustain cost appropriate 挨饿，饿死 大气；气氛 波，波状运动 辐射，放射线 释放，排放 可居住的 维持，保持 使丧失，使损失 合适的 Important words: rainstorm heatwave continued radiation policy restrict seize issue diagram n. 热浪；奇热时期 n. 暴风雨，大暴雨 adj. 持续的，频繁的 n. 辐射，放射线 n. 政策，方针 v. 限制，控制 v. 抓住 n. 议题，争论点 n. 图表，图解 Important phrases: along with… appear to do... have an impact on... result in greenhouse effect refer to… take actions to do... the amount of... carbon footprint 似乎 和；连同 对...产生影响 导致 温室效应 指的是 采取措施做…… ……的数量 碳足迹；碳排放量 Learning Objectives: By the end of the class, you will be able to Figure out the text type of the passage. Know about the causes and impacts of climate change. Reflect on how to balance our needs and environmental protection. But this is what polar bears are really like! 1. How do you feel about the polar bears in the video and the following pictures? 2. What caused the polar bear’s death? Global warming The root cause is... While-reading Activity 2: Skim and answer. A. News report 1. What's the type of this text? B. Biography C. Expository essay 2. What's the purpose of this text? A. To inform readers of climate change. B. To persuade readers to focus on climate change problem. C. To Introduce the process of climate change. We have known about climate change for decades… In 2013,a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard… Then what is causing the increase in the global average surface temperature? … There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather… Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate… 3. Divide the text into 4 parts and analyze the main idea of each part. Para 1 Para 2 Para 3 Para 4 Para 5 We have known about climate change for decades… In 2013,a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard… Then what is causing the increase in the global average surface temperature? … There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather… Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate… Para 1 Para 2 Para 3 Para 4 Para 5 Part 1: problem Part 2: cause Part 3: consequence Part 4: solutions 3. Divide the text into 4 parts and analyze the main idea of each part. Global warming Activity 3: Read for details Please read carefully and try to find more details, and then think about the following questions. Task 1: Read part 1 (para 1-2) and summarize evidences of climate change. We have known about climate change for decades. There is little doubt that Earth is getting warmer and warmer(see the graph).A warming ocean and atmosphere along with melting ice and rising sea levels provide evidence of a dramatic change in the global climate. In 2013,a lot of people were shocked by a news photo of a dead polar bear that was found on Norway's Arctic island of Svalbard. According to the scientists who found its dead body, all that remained of the polar bear was "skin and bones". An expert who has studied polar bears for many years said that from the position of its dead body, the bear appeared to have starved and died. Experts claimed that low sea-ice levels caused by climate change meant the bear could not hunt seals as before, so it had to travel greater distances in order to find food. This alarming case showed how the increase in temperature had an impact on Earth's ecology. Task 1: Read part 1 (para 1-2) and summarize evidences of climate change. Climate change Evidence 1: A warming ocean and atmosphere Evidence 2: melting ice Evidence 3: rising sea levels The Earth is getting ________ and ________. warmer warmer Task 2: Read part 2 (para 3) and finish the questions. Then what is causing the increase in the global average surface temperature? Climate scientists often mention a key climate process called the " green house effect", which has two common meanings: the "natural" green house effect and the "man-made" green house effect. The "natural " green house effect refers to the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation. The heat is released back into space at longer wave lengths. Greenhouse gases in the atmosphere, such as methane and carbon dioxide, trap some of the heat, keeping Earth's climate warm and habitable. Without this process, Earth could not sustain life. However, the "man-made " green house effect has now become a big problem. When people produce huge amounts of extra greenhouse gases by burning fossil fuels, more heat energy is trapped in the atmosphere and causes Earth's surface temperature to rise quickly. 1. What is causing the increase in the global surface temperature? greenhouse effect _______ greenhouse effect _________ greenhouse effect natural man-made 2. Why is the "natural" greenhouse effect important and necessary? 3. What are the consequences of high greenhouse gas emissions? 2. Why is the "natural" greenhouse effect important and necessary? Function: It keeps Earth's climate warm and habitable 3. What are the consequences of high greenhouse gas emissions? a big problem: It causes Earth's surface temperature to rise quickly Global warming 4. Create a diagram to describe how the natural greenhouse effect works. atmosphere light 4. Create a diagram to describe how the natural greenhouse effect works. atmosphere light enters the atmosphere Step 1 Reflected sunlight Step 2 Heat released back into space Step 3 Heat reflected back to Earth’s surface Step 3 Task 3: 1. Read part 3 (para 4) and fill in the blanks blanks. There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives. Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there will be a higher price to pay. In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses. Global warming extreme weather natural disasters serious damage, costing human lives extreme rainstorms, heatwaves led to led to results examples ? ? ? ? drought flood There is strong and comprehensive evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide, not only causing serious damage, but also costing human lives. Climate scientists have warned that if we do not take appropriate actions, this warming trend will probably continue and there will be a higher price to pay. In fact, news reports are frequently broadcast about extreme rainstorms and heatwaves causing deaths and economic losses. 2. Why did the auther mention the climate scientists’s warning in para 4? The global warming is getting wore and worse. It is urgent for us to take actions and measures to deal with it. Task 4: Read part 4 and answer. Continued greenhouse gas emissions will result in further warming and long-lasting changes to the global climate. This requires the attention of people all over the world. Governments need to consider making policies and taking appropriate actions and measures to reduce greenhouse gas emissions. We as individuals can also reduce our "carbon footprint“ by restricting the amount of carbon dioxide our lifestyles produce. It is our responsibility to seize every opportunity to educate everyone about global warming, along with its causes and impacts, because this is the most serious issue affecting all of us on this planet. So what will you do to help? solutions governments individuals make policies take appropriate actions and measures reduce our “carbon footprint” by… educate everyone about global warming ? ? ? ? 1. What should governments and individuals do to deal with the climate change? Activity 4: Discuss in groups Who should be mainly responsible for dealing with climate change? What can we do to reduce “carbon footprint” in daily life? Discuss in your groups. What can we do to reduce “carbon footprint” in daily life? Discuss in your groups. Sort the garbage Abate the use of plastic bags Value our own role End wasting resources Encourage others to paticipate in it Alter our lifestyle Ride a bike or walk to school Turn off the power in time Help promote environmental protection S A V E E A R T H S A V E E A R T H Assignment Make a poster about environmental protection. English idioms 1. Lucid waters and lush mountains are valuable as "mountains of gold and silver". 青山就是金山银山。 2. If we don't save water, the last drop of water will be our tear. 如果我们不节约用水，那么最后一滴水将会是我们的眼泪。 3. Only by changing the way we treat the environment can we get along well with it. Only by saving the environment can we save ourselves. 我们只有政变对待环境的方式，才能和它好好相处。我们只有拯救环境，才能拯救自己。 Thanks for your listening！ $