UNIT 3 Section Ⅰ Reading and Thinking(Ⅰ)-【创新教程】2025-2026学年高中英语选择性必修第三册五维课堂同步课件PPT（人教版）

该高中英语课件围绕环境保护、气候变化等单元主题，系统整合单元新知识、课文结构总览及重难点解析，通过单元导入衔接前后知识，以学习支架形式帮助学生构建语言知识框架。 其亮点在于通过课文对照翻译提升语言理解与表达能力，结合结构总览培养逻辑分析的思维品质，课时素养提升模块强化学习能力。例如气候变化单元解析证据与原因，助力学生系统掌握知识，教师可借助结构化资源提高教学效率。

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(Various)　Everyone can make a difference to the environmental protection—　 no use of plastic，classifying garbage，riding or walking to school... Section Ⅰ　Reading and Thinking(Ⅰ) CLIMATE CHANGE REQUIRES THE WORLD'S ATTENTION We have known about climate change for decades. There is little doubteq \f(that Earth is getting warmer and warmer,that 引导的同位语从句) (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. Global Surface Temperature：1920—2016 Base Period In 2013, a lot of people were shocked by a news photo of a dead polar bear eq \f(that was found on Norway's Arctic island of Svalbard.,that引导的定语从句) According to the scientists eq \f(who found its dead body，,who引导的定语从句) all eq \f(that remained of the polar bear,\a\vs4\al(that引导的定语从句；先行词为all，,定语从句关系词用that)) was “skin and bones”. An expert eq \f(who has studied polar bears for many years,who引导的定语从句，关系词在从句中作主语) said that from the position of its dead body, the bear appeared to have starved and died. Experts claimed that low sea­ice levels eq \f(caused by climate change,过去分词短语作后置定语) 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 eq \f(how the increase in temperature,how引导的宾语从句) eq \f( had an impact on,对……有影响) Earth's ecology. Then what is causing the increase in the global average surface temperature? Climate scientists often mention a key climate process called the “eq \f(greenhouse effect”，,过去分词短语作后置定语) eq \f(which has two common meanings,which引导的非限制性定语从句)： the “natural” greenhouse effect and the “man­made”greenhouse effect. The “natural” greenhouse effect refers to the fact 　that heat from the sun enters the　 eq \f(atmosphere and warms Earth's surface as short­wave radiation.,that引导的同位语从句)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, eq \f(keeping Earth's climate warm and habitable.,现在分词短语作结果状语) Without this process, Earth could not sustain life.However, the “man­made”greenhouse effect has now become a big problem. eq \f(When people produce huge amounts of extra greenhouse gases by,When引导的时间状语从句)　burning fossil fuels　， more heat energy eq \f(is trapped in,被困在) the atmosphere and causes Earth's surface temperature to rise quickly. There is strong and comprehensive evidence eq \f(that the rise in temperature,that引导的同位语从句)　has led to an increase in extreme weather and natural disasters worldwide，　not only eq \f(causing serious damage，,现在分词短语作结果状语)but also eq \f(costing human lives.,现在分词短语作结果状语)Climate scientists have warned that eq \f(if we do not take appropriate actions，,if引导的条件状语从句)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 eq \f(causing deaths and economic losses.,现在分词短语作后置定语) Continued greenhouse gas emissions will eq \f(result in,导致) further warming and long­lasting changes to the global climate. This requires the attention of people all over the world. Governments need to eq \f(consider making policies and taking appropriate actions and measures,consider doing sth.意为“考虑做某事”) eq \f(to reduce greenhouse gas emissions.,不定式短语作目的状语) 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 eq \f(affecting all of us on this planet.,现在分词短语作后置定语) So what will you do to help？ 气候变化需要全世界的关注 我们几十年前就知道气候变化了。几乎没有疑问，地球正变得越来越温暖(见图表)。海洋和大气的变暖以及冰川的融化和海平面的上升证明全球气候发生了急剧变化。 全球地面气温：1920—2016基本周期 2013年，挪威北极地区的斯瓦尔巴群岛上发现了一只北极熊的尸体，这张新闻照片让很多人感到震惊。根据发现北极熊尸体的科学家的说法，这只北极熊只剩下“皮包骨头”了。一位研究北极熊多年的专家说，从它尸体的位置看，这只北极熊似乎是饿死的。专家称，气候变化导致海冰面积减少，这就意味着北极熊无法像以前那样捕猎海豹，所以为了能找到食物它不得不长途跋涉。这一令人震惊的案例表明，气温升高对地球生态产生了怎样的影响。 那么是什么导致了全球平均地面温度的上升呢？气候科学家经常提到一个被称为“温室效应”的关键气候过程，它有两个共同的含义：“自然”温室效应和“人为”温室效应。“自然”温室效应指的是来自太阳的热量进入大气层，并以短波辐射的形式使地球表面温度升高。热量以更长的波长释放回太空。大气中的温室气体，如甲烷和二氧化碳，会储存一些热量，使地球气候保持温暖宜居。没有这个过程，地球就无法维持生命。然而，“人为”温室效应现在已经成为一个大问题。当人们通过燃烧化石燃料产生大量额外的温室气体时，更多的热能被困在大气中，进而导致地球表面温度迅速上升。 有充分且全面的证据表明，气温上升已导致世界范围内极端天气和自然灾害的增加，不仅造成严重的破坏，还使人类付出生命代价。气候科学家警告说，如果我们不采取适当的行动，这种变暖的趋势可能会继续下去，并将付出更高的代价。事实上，新闻报道经常报道导致死亡和造成经济损失的极端暴雨和热浪。 持续的温室气体排放将导致全球气候进一步变暖和长期变化。这需要全世界人民的关注。各国政府需要考虑制定政策，并采取适当的行动和措施来减少温室气体排放。作为个人，我们也可以通过减少由我们生活方式产生的二氧化碳量来减少我们的“碳足迹”。我们有责任抓住每一个机会，让每个人了解全球变暖及其原因和影响，因为这是影响我们这个星球上所有人的最严重的问题。那么你会提供什么帮助呢？ Ⅰ.Reading for main idea. 1．What is the main idea of the text? Climate change has caused 　great bad effects on the planet　 and human beings 　should pay attention to them　. 2．Match the idea with each paragraph. Para.1　　　A．Case for the rising temperature Para.2 B．Measures to deal with global warming Para.3 C．Results of the rising temperature Para.4 D．Earth is getting warmer and warmer Para.5 E．Causes of global warming 答案：Paras.1—5　DAECB Ⅱ.Reading for details. 1．Which of the following is not a proof of a dramatic change in the global climate? A．A warming ocean and atmosphere. B．Melting ice. C．Rising sea levels. D．A large population. 2．The case of the polar bear shows that　 　. A．human activities affect the survival of polar bears B．food shortage becomes a major threat to creatures C．the increase in temperature has an effect on Earth's ecology D．the hunting behaviour of human leads to the sharp decrease of animals 3．What do you think of “greenhouse effect”？ A．It does harm to humans. B．It has good and bad sides. C．It benefits humans. D．Human beings should eliminate it. 4．According to the text, what harm can the rise in Earth's temperature cause? A．An increase in extreme weather and natural disasters. B．An increase in the number of difficult human diseases. C．Drawdown (下降) of groundwater levels. D．Global population growth. 5．In order to prevent the global temperature from rising, which of the following is NOT right? A．Governments should make policies and take appropriate actions. B．Individuals should change some of their lifestyles. C．We should educate everyone about global warming. D．We should consider moving away from Earth. 答案：1—5　DCBAD Ⅲ.Post­reading Fill in the blanks and try to recite the summary. There is no doubt 1.　that　 the earth is becoming warmer and there is strong evidence what causes the dramatic change in the global climate. A 2013 news photo of a 2.　dead　(die) polar bear showed that the polar bear seemed to have died of 3.　starvation　(starve). This alarming case showed how the increase in temperature had 4.　an　 impact on Earth's ecology. The “greenhouse effect”is to blame. The “greenhouse effect”has two common meanings: the “natural”greenhouse effect 5.　and　 the “man­made”greenhouse effect. The process of “natural”greenhouse effect 6.　keeps　(keep) Earth's climate warm and habitable while the “man­made”greenhouse effect causes Earth's surface temperature 7.　to rise　(rise)． As is well known, the rise in temperature has led to an increase in extreme weather and natural disasters worldwide，not only 8.　causing　(cause) serious damage, but also costing human lives. 9.　To reduce　(reduce) greenhouse gas emissions, governments need to consider making policies and taking appropriate actions and measures while we as individuals can also reduce our “carbon footprint”by restricting the amount of carbon dioxide 10.　our　(we) lifestyles produce. $