Unit 3 Period 2 课时练案 课文整体阅读(Reading and Thinking)-【名师导航】2025-2026学年高中英语选择性必修第三册教师用书配套课件（人教版）

该高中英语课件围绕“环境保护”主题，聚焦全球变暖的成因、影响及应对措施，通过北极熊死亡案例导入，搭建“现象—原因—解决”学习支架，衔接整体理解、细节分析到多维探究的逻辑脉络，帮助学生系统掌握相关知识。 其亮点在于融合语言能力与思维品质培养，如一词多义辨析（release的动词和名词用法）、长难句分析提升语言能力，多维探究题（如“谁该为气候变化负责”）促进批判性思考。采用案例导入和任务链设计，学生能深化环保认知，教师可高效落实阅读技能训练。

Period 2　课时练案 课文整体阅读 (Reading and Thinking) 主题语境 人与自然——自然环境保护 UNIT 3　 ENVIRONMENTAL PROTECTION Ⅰ．文章大意 What does the text mainly tell us? A．Some polar bears died of starvation． B．What the greenhouse effect is． C．Global warming has caused some disasters and we must pay attention to it． D．How polar bears find food． √ Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅱ．篇章结构 Period 2　课时练案 课文整体阅读(Reading and Thinking) 1．From the second paragraph we can learn that________． A．all the polar bears have died of starvation B．the expert knows nothing about the polar bear C．the polar bear couldn't find enough food because of climate change D．the polar bear liked travelling long distances √ Period 2　课时练案 课文整体阅读(Reading and Thinking) 2．Why is the “natural” greenhouse effect important and necessary? A．Because it is short-wave radiation． B．Because it is long-wave radiation． C．Because it releases more heat． D．Because it helps Earth to sustain life． √ Period 2　课时练案 课文整体阅读(Reading and Thinking) 3．In which part of a newspaper or magazine may we find this text? A．Entertainment．　　 B．Economy． C．Education． D．Environment． 4．What's the author's purpose of writing this passage? A．To call for people to donate money． B．To ask people not to kill polar bears． C．To appeal to people to care Earth's ecology． D．To educate people about global warming． √ √ Period 2　课时练案 课文整体阅读(Reading and Thinking) 1．Do you think climate change is the result of human activity？Give your reasons． ___________________________________________________________ ___________________________________________________________ Period 2　课时练案 课文整体阅读(Reading and Thinking) 2．Who do you think should take responsibility for dealing with climate change？What can we do? ___________________________________________________________ ___________________________________________________________ [答案]　略 Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅰ．一词多义/熟词生义 1．release n．排放；释放；发布；发行；公开 vt．发布；释放；松开；免除；公开；宣泄 ①(教材原句)The heat is released back into space at longer wave lengths． ________ ②The new software is planned for release in April． _______ ③The band will release its new single next week． ________ ④Music is a great channel for releasing your emotions． ________ vt．释放 n．发行 vt．发布 vt．宣泄 Period 2　课时练案 课文整体阅读(Reading and Thinking) 2．fuel n．燃料；刺激性言行 vt．增加；给……提供燃料；加强；刺激 ①(教材原句)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． _______ n．燃料 Period 2　课时练案 课文整体阅读(Reading and Thinking) ②Fuel the vehicle as you would at a filling station． __________________ ③Research suggests warm colors fuel our appetites． ________ 3．Once you've broken the seal of a bottle there's no way you can put it back together again． _______ vt．给……提供燃料 vt．增加 n．封口 Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅱ．词块积累 1．______________ 气候变化 2．___________ 几十年 3．________________ 提供证据 4．_________________ 剧变 5．_________ 像以前那样 climate change for decades provide evidence a dramatic change as before Period 2　课时练案 课文整体阅读(Reading and Thinking) 6．_________________________________ 全球平均地表温度 7．____________ 维持生命 8．_________________ 自然灾害 9．____________________ 造成严重损害 10．________________________ 采取适当的行动 11．_______________________________ 减少温室气体排放 the global average surface temperature sustain life natural disasters cause serious damage take appropriate actions reduce greenhouse gas emissions Period 2　课时练案 课文整体阅读(Reading and Thinking) 12．______________ 作为个人 13．_______________________________ 做某事是某人的责任 14．______________________________ 抓住每个机会做某事 as individuals it's one's responsibility to do sth． seize every opportunity to do sth． Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅲ．写作佳句 1．_____________________ Earth is getting warmer and warmer (see the graph)． 毫无疑问，地球正变得越来越温暖(如图)。 2．In 2013，a lot of people ________________________________________________ that was found on Norway's Arctic island of Svalbard． 2013年，在挪威的北极圈斯瓦尔巴群岛的一个岛上，(人们)发现了一只死亡的北极熊，这张新闻图片令许多人感到震惊。 There is little doubt that were shocked by a news photo of a dead polar bear Period 2　课时练案 课文整体阅读(Reading and Thinking) 3．We as individuals can also reduce our “carbon footprint” _________________________________________________________． 作为个人，我们也可以通过限制生活方式产生的二氧化碳量来减少我们的“碳足迹”。 by restricting the amount of carbon dioxide our lifestyles produce Period 2　课时练案 课文整体阅读(Reading and Thinking) 4．________________________________________________________about global warming，along with its causes and impacts，_________________________________________________________． 我们有责任抓住每一个机会，教育每个人了解全球变暖，包括其成因和影响，因为这是影响这个星球上我们所有人的最严重的问题。 It is our responsibility to seize every opportunity to educate everyone because this is the most serious issue affecting all of us on this planet Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅳ．长难语句 1．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． Period 2　课时练案 课文整体阅读(Reading and Thinking) [分析]本句是一个复合句。Experts claimed是____；that引导宾语从句，作claimed的宾语；该宾语从句中的the bear could not hunt seals as before也是宾语从句，作meant的宾语；caused by climate change是过去分词短语作____，修饰low sea-ice levels。 [翻译]________________________________________________________________________________________________________________ 主句 定语 专家称，气候变化导致的海冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长途跋涉去寻找食物。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 2．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． Period 2　课时练案 课文整体阅读(Reading and Thinking) [分析]本句是一个复合句。There is strong and comprehensive evidence是____；that引导______从句；not only...but also...连接两个并列的动词-ing形式短语作结果状语。 [翻译]________________________________________________________________________________________________________________ 主句 同位语 确凿、全面的证据表明，温度上升导致全球极端天气和自然灾害增多，不仅造成严重破坏，而且使人丧命。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 3．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． [分析]本句是一个复合句。because引导________从句；it是________，真正的主语是to seize every opportunity；affecting all of us on this planet是动词-ing形式短语作____，修饰名词issue。 [翻译]________________________________________________________________________________________________________________ 原因状语 形式主语 定语 我们有责任抓住每一个机会，教育每个人了解全球变暖，包括其成因和影响，因为这是影响这个星球上我们所有人的最严重的问题。 Period 2　课时练案 课文整体阅读(Reading and Thinking) Ⅴ．课文语法填空 There is little doubt that Earth is getting warmer and warmer．In 2013，many people 1．____________ (shock) by a news photo of a dead polar bear which died of 2．__________ (starve)．Experts claimed that low sea-ice levels 3．______ (cause) by climate change meant the bear could not hunt seals as before，so it had to travel greater distances to find food．Then what is causing the increase in the global average surface temperature？Climate scientists often mention a key climate were shocked starvation caused Period 2　课时练案 课文整体阅读(Reading and Thinking) process called the “greenhouse effect”，4．_____ has two common meanings：the “natural” greenhouse effect and the “man-made” greenhouse effect．The “man-made” greenhouse effect has now become 5．_ big problem．There is strong and comprehensive evidence 6．____ the rise in temperature has led to an increase in extreme weather and natural disasters worldwide．In fact，news reports are 7．__________ (frequent) broadcast about extreme rainstorms and which a that frequently Period 2　课时练案 课文整体阅读(Reading and Thinking) heatwaves causing deaths and economic losses．Continued greenhouse gas emissions will result in further warming and long-lasting changes to the 8．______ (globe) climate．This requires the attention of people all over the world．We as individuals can reduce our “carbon footprint” by 9．___________ (restrict) the amount of carbon dioxide our lifestyles produce．It is our responsibility 10．________ (seize) every opportunity to educate everyone about global warming，along with its causes and impacts． global restricting to seize Period 2　课时练案 课文整体阅读(Reading and Thinking) ①melt vi．& vt．(使)融化；熔化；软化 ②dramatic adj．突然的；巨大的 ③starve vi．& vt．(使)挨饿；饿死 ④seal n．海豹 ⑤have an impact on对于……有影响 Period 2　课时练案 课文整体阅读(Reading and Thinking) ⑥ecology n．生态；生态学 ⑦mention vt．提到；写到；说到 ⑧refer to描述；查阅；涉及；指的是 ⑨release vt．& n．排放；释放；发布 release sth．into sth．把某物排放到…… ⑩carbon n．碳 carbon dioxide二氧化碳 Period 2　课时练案 课文整体阅读(Reading and Thinking) ⑪habitable adj．适合居住的 ⑫sustain vt．维持；遭受；承受住 sustainable adj．可持续的；合理利用的 ⑬fuel n．燃料；刺激性言行 fossil fuel化石燃料(如煤或石油) ⑭be trapped in陷入困境……；被困于…… ⑮comprehensive adj．全部的；所有的；详尽的 ⑯take appropriate actions采取适当的行动 Period 2　课时练案 课文整体阅读(Reading and Thinking) ⑰trend n．趋势；趋向；动向 ⑱frequently adv．频繁地；经常 ⑲broadcast vt．& vi．(broadcast， broadcast)播送；广播；传播n．广播节目；电视节目 ⑳result in导致；结果是 ㉑policy n．政策；方针；原则 make policies制定政策 Period 2　课时练案 课文整体阅读(Reading and Thinking) ㉒individual n．个人；个体 ㉓restrict vt．限制；限定；束缚 ㉔seize vt．抓住；夺取；控制 ㉕issue n．问题 Period 2　课时练案 课文整体阅读(Reading and Thinking) CLIMATE CHANGE REQUIRES THE WORLD'S ATTENTION We have known about climate change for decades．There is little doubt that[1] Earth is getting warmer and warmer (see the graph)．A warming ocean and atmosphere along with melting① ice and rising sea levels provide evidence of a dramatic② change in the global climate． Period 2　课时练案 课文整体阅读(Reading and Thinking) [1]There is little doubt that...意为“毫无疑问……”，that引导同位语从句。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 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[2]，all that remained of the polar bear[3] 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 starved③ and died．Experts claimed that low sea-ice levels caused by climate change[4] meant the bear could not hunt seals④ as before[5]，so it had to travel greater distances in order to find food．This alarming case showed how the increase in temperature had an impact on⑤ Earth's ecology⑥． Period 2　课时练案 课文整体阅读(Reading and Thinking) [2]“who found its dead body”为who引导的定语从句，修饰先行词the scientists。 [3]“that remained of the polar bear”为that引导的定语从句，修饰先行词all。 [4]“that low sea-ice levels caused by climate change”为that引导的宾语从句，作动词claimed的宾语。 [5]“the bear could not hunt seals as before”是省略了that的宾语从句，作动词meant的宾语。 Period 2　课时练案 课文整体阅读(Reading and Thinking) Then what is causing the increase in the global average surface temperature？Climate scientists often mention⑦ a key climate process called the“greenhouse effect”[6]，which has two common meanings：the “natural” greenhouse effect and the “man-made” greenhouse effect[7]．The “natural” greenhouse effect refers to⑧ the fact that heat from the sun enters the atmosphere and warms Earth's surface as short-wave radiation[8]．The heat is released⑨ back into space at longer wave lengths．Greenhouse gases in the atmosphere，such as methane and Period 2　课时练案 课文整体阅读(Reading and Thinking) carbon⑩ dioxide，trap some of the heat，keeping Earth's climate warm and habitable⑪．Without this process，Earth could not sustain⑫ 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 fuels⑬，more heat energy is trapped in⑭ the atmosphere and causes Earth's surface temperature to rise quickly． Period 2　课时练案 课文整体阅读(Reading and Thinking) [6]“called the‘greenhouse effect’”为过去分词作后置定语，修饰a key climate process。 [7]“which has two common meanings...greenhouse effect”是which引导的非限制性定语从句，修饰先行词“greenhouse effect”。 [8]“that heat from the sun...short-wave radiation”是that引导的同位语从句，作the fact的同位语。 Period 2　课时练案 课文整体阅读(Reading and Thinking) There is strong and comprehensive⑮ evidence that the rise in temperature has led to an increase in extreme weather and natural disasters worldwide[9]，not only causing serious damage，but also costing human lives[10]．Climate scientists have warned that if we do not take appropriate actions⑯，this warming trend⑰ will probably continue and there will be a higher price to pay．In fact，news reports are frequently⑱ broadcast⑲ about extreme rainstorms and heatwaves causing deaths and economic losses． Period 2　课时练案 课文整体阅读(Reading and Thinking) [9]“that the rise in temperature...natural disasters worldwide”是that引导的同位语从句，作名词evidence的同位语。 [10]not only...but also...连接两个并列的动词-ing形式作结果状语。 Period 2　课时练案 课文整体阅读(Reading and Thinking) Continued greenhouse gas emissions will result in⑳ 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 policies㉑ and taking appropriate actions and measures to reduce greenhouse gas emissions．We as individuals㉒ can also reduce our “carbon footprint ” by restricting㉓ the amount of carbon dioxide our lifestyles produce．It is our responsibility to seize㉔ every opportunity to educate everyone about global warming，along with its causes and impacts[11]，because this is the most serious issue㉕[12] affecting all of us[13]on this planet．So what will you do to help? Period 2　课时练案 课文整体阅读(Reading and Thinking) [11]“It is our responsibility to seize...impacts”中It作形式主语，动词不定式短语“to seize every opportunity...”为真正的主语。 [12]because引导原因状语从句。 [13]“affecting all of us”是动词-ing形式短语作后置定语。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 气候变化需要全世界的关注 我们了解气候变化已有数十年之久了。毫无疑问，地球正变得越来越温暖(如图)。海洋和大气变暖，以及冰层融化、海平面上升，都为全球气候急剧变化提供了依据。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 2013年，在挪威的北极圈斯瓦尔巴群岛的一个岛上，(人们)发现了一只死亡的北极熊，这张新闻图片令许多人感到震惊。据发现北极熊尸体的科学家说，这只北极熊仅剩“皮包骨”。一位长期研究北极熊的专家说，从尸体的姿势看，这只北极熊像是饿死的。专家称，气候变化导致的海冰面降低意味着北极熊无法像以前那样捕食海豹，于是它只能长途跋涉去寻找食物。这一令人惊恐的案例反映了气温上升对地球生态造成的影响。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 那么，到底是什么导致全球平均地表温度上升呢？气候科学家常常会提到一个关键的气候过程－－“温室效应”；它有两个常见的含义：“天然”温室效应和“人造”温室效应。“天然”温室效应指的是来自太阳的热量以短波辐射的形式进入大气层，使地表变暖。这一热量以更大的波长被释放回大气层。大气层中甲烷、二氧化碳等温室气体困住了部分热量，从而使地球保持气候温暖、适宜居住。如果没有这一过程，地球就无法维系生命。然而，“人造”温室效应现在却成为一个大问题。当人类由于燃烧化石燃料产生了大量额外的温室气体，更多的热能被困在大气层中，导致地表温度迅速上升。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 确凿、全面的证据表明，温度上升导致全球极端天气和自然灾害增多，不仅造成严重破坏，而且使人丧命。气候学家已发出警告：如果我们不采取适当的行动，这种变暖的趋势可能会持续下去，而我们将为此付出更大的代价。事实上，有关极端暴风雨和热浪造成死亡和经济损失的新闻报道已屡见不鲜。 Period 2　课时练案 课文整体阅读(Reading and Thinking) 温室气体的持续排放将导致全球气候进一步变暖，并带来持久的变化。这需要全世界人的关注。各国政府需考虑制定政策并采取适当的行动和措施以减少温室气体的排放。作为个人，我们可以通过限制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，教育每个人了解全球变暖，包括其成因和影响，因为这是影响这个星球上我们所有人的最严重的问题。那么，你会做些什么来贡献力量呢？ Period 2　课时练案 课文整体阅读(Reading and Thinking) $