Unit 3 Environmental Protection Reading and Thinking-课件-2024-2025学年高中英语人教版（2019）选择性必修第三册

人教版 选择性必修三 Unit 3 Environmental Protection reading and thinking Learning objectives: By the end of the class, you are able to 01 02 03 have a better understanding of climate change and the structure of whole passage. be aware of the importance of cutting down greenhouse gas and take effective action to solve it. think deeply about the problem of global warming. 1. What can you see in the photo? 2. Why did it happen? The ice is melting. Because of the greenhouse effect/global warming. Pre-reading 3 What is global warming? Lead-in drought flood storm sea level rise heat wave fire Global warming Climate change What do you think causes such extreme weather and disasters? What other influences of the global warming? 6 Look at the graph below. What is it about? What information can you get from it? The earth is becoming warmer and warmer. Look and discuss 7 What happened to the polar bear? skin and bones /bəʊnz/ 瘦得皮包骨 The polar bear (北极熊) may die for lacking food. Now, let's read the passage to find out whether you are right. 8 While-reading : read for the text type 1. What is the type of this passage? A. Argumentative writing B. Narrative writing C. Expository writing 2. In which part of a newspaper or magazine may we find this passage? A. Entertainment B. Economy C. Education D. Environment CLIMATE CHANGE REQUIRES THE WORLD’S ATTENTION (说明文) Part 1: (para.1-2 ) Part 2: (para. 3) Part 3: (para. 4) Part 4: (para. 5) The evidence(证据) of dramatic climate change that had an impact on Earth’s ecology The cause(原因) of the increase in the global average surface temperature The consequences(结果) of the rise in temperature The solutions(解决方法) to reducing greenhouse gas emissions While-reading : match the main idea with each part Evidence Cause Consequences Solutions While-reading : read for the structure 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. Para1 What evidence of climate change can you find in the first paragraph? Evidence 1: _____________________________________ Evidence 2: _____________________________________ Evidence 3: _____________________________________ a warming ocean and atmosphere melting ice rising sea level 12 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. Para2 Time Where What happened How did it happen climate change starvation longer food-seeking travel lack of food low sea-ice levels The following reasons account for the death of the polar bear . Read paragraph 2 and put them in a correct order. What is the root cause? cause and effect Then what is causing the increase in the global average surface temperature? Climate scientists often mention a key climate process called the "greenhouse effect", which has two common meanings: the"natural" greenhouse effect and the "man-made" greenhouse effect. The "natural" greenhouse 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" greenhouse 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. Para3 Topic sentence natural Definition Heat from the sun enters the __________ and warms Earth’s __________ as _________-wave radiation. atmosphere surface short Function Keeping Earth’s warm and_____________ habitable man-made Definition People produce huge amounts of extra __________ gases by burning_____________. greenhouse fossil fuels A big problem More ________ energy is trapped in the atmosphere and causes Earth’s surface temperature to ________ quickly. heat rise Greenhouse effect Part 2 (para3): The cause Read the text again and create a diagram describing how the greenhouse effect works. The greenhouseeffect D. Heat enters the atmosphere B. Reflected sunlight Earth Atmosphere C. Heat reflected back to earth’ surface A. Heat released back into space A D C A B 17 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. The rise in temperature led to serious damage costing human lives economic losses example results extreme weather/ natural disasters extreme rainstorms heat waves What are the consequences of the global temperature rise? Para4 18 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? What are the solutions we can take? The solutions Para5 Individuals Governments Reduce our “carbon footprint” Educate everyone about global warming, along with its causes and impacts Part 4 (para5): Make policies Take appropriate actions and measures What are the solutions we can take? What is the author’s purpose of writing this text? The purpose is to _______ the readers and ______ them to do whatever they can to deal with this problem. To reduce our “carbon footprint” To educate everyone around us Post-reading inform inspire As a student, what can we do to protect the environment in our daily life? Thinking Follow garbage sorting rules Turn off the lights and fans when leaving Plant more trees Take the stairs instead of elevator Go to school by bike instead of by car/bus Use basket or environmental basket bag instead of plastic bag 1. Lucid waters and lush mountains are valuable as "mountains of gold and silver". 绿水青山就是金山银山。 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. 我们只有改变对待环境的方式，才能和它好好相处。我们只有拯救环境，才能拯救自己。 Learn more English sentences 改变 30 Make a poster about “How should we balance our needs and sustainable nature?” Homework 31 Goodbye x264 0.128.2216+688+32 a17ff54 tMod [8-bit@4:2:0 X86] $$