Unit 6 Section Ⅰ “Understanding ideas”的课文习读环节-【新课程学案】2025-2026学年高中英语必修第二册配套课件PPT（外研版）

该高中英语课件围绕“关爱地球、保护环境”主题，涵盖听读看等语言输入及写说等语言输出技能，聚焦现在分词和过去分词作补语的语法项目。通过电影《大白鲨》场景导入，从“鲨鱼危险”到“濒危”的脉络，搭建从理解问题到树立保护意识的学习支架。 其亮点在于融合语言能力、思维品质与文化意识培养。如课文阅读理解通过泛读理文脉、精读析细节，提升信息获取与推理能力；写法借鉴赏析标题、句式，强化语言表达；美文阅读结合WWF数据及环保视频、漫画，增强环保意识。采用任务型教学与语篇分析法，助力学生提升综合语言能力和环保素养，为教师提供系统教学资源，提高教学效率。

Earth first UNIT 6 1 把握单元素养目标 主题意识 本单元的主题是关爱地球、保护环境。通过了解人类面临的诸多问题，认识到环境保护的重要性，树立环保意识，培养人与自然和谐共处的情感、态度和价值观。 语法项目 理解并掌握现在分词和过去分词作补语的用法。 语言输入 听 能够听懂与环保有关的话题，并从中获取关键信息，加深对环保的认识。 读 能够理解与环保有关的文章内容，并能正确判断文章中人物的观点和态度，形成对文章主题思想的理解。 看 能够通过观看环保主题的视频和漫画，增强环保意识。 语言输出 写 能够运用所学内容写一篇环保倡议书并开展碳足迹调研。 说 能够在对话需要时有礼貌地打断对方；能够就环境保护或动物保护话题，用英语表达自己的观点。 续表 “Understanding ideas”的 课文习读环节 Section Ⅰ 课文阅读理解 课文写法借鉴 美文阅读润心 课时跟踪检测 Contents 目录 01 02 03 04 5 01 课文阅读理解 泛读课文，完成以下学习任务 (一)理清文脉结构 attacks dangerous killed quickly Finning danger protect extinction (二)把握主旨大意 1．What's the main idea of this passage? A．The film Jaws was a great success. B．Sufferings and protection of sharks. C．The reasons why the number of sharks is decreasing. D．The ways to protect sharks. √ 2．Match the main idea with the proper paragraph. Para.1　A．The number of large sharks fell quickly. Para.2 B．People are scared of sharks and wanted them killed. Para.3 C．Today, more people want to protect sharks from extinction. Para.4 D．Finning affected Peter Benchley and he fought to protect sharks. Para.5 E．The film Jaws makes people see sharks as dangerous animals. 答案：Paras.1～5　EBADC 精读课文，完成以下学习任务 (一)阅读理解 1．What's the consequence of the success of Jaws? A．People saw sharks as dangerous animals. B．People came to realize it was important to protect sharks. C．It made people less frightened of sharks. D．People cared if sharks were killed. √ 2．Which of the following is TRUE according to the passage? A．The number of large sharks rose quickly after 1975. B．People catch sharks to get their fins. C．Experts have proved that sharks attack humans for food. D．More and more people just want sharks killed today. √ 3．What does the sentence “Sharks don't target humans” in Paragraph 4 probably mean? A．Not all sharks eat people. B．Sharks attack humans by accident. C．Sharks see people as the main food. D．The number of people who were killed by sharks is very low. √ [Tip] 由上下文推测句子含义 解句意理解题时切忌单纯翻译句子的字面意思，而应根据上下文的背景信息及文章主题意义来推测句意。如第3题，根据题干信息可定位到文章第四段倒数第三句，然后由下一句信息即可推知答案。 4．Today, more and more people want to_________ . A．show interest in sharks B．criticise the film Jaws C．protect sharks from extinction D．eat more sharks as food √ (二)阅读表达 1．Why did people kill sharks? ________________________________________________________________________________ 2．What's the present situation of the sharks? ______________________________________________________________________________________________________________ For one thing, people were afraid of sharks; for another, they could profit from finning. Today, more and more people realize that sharks are basically harmless to humans and want to protect them from extinction. 3．What do you think we should do to protect the wild animals？(Answers may vary.) _____________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ Firstly，we should protect animal habitats.Creating protected areas is an effective way to protect animal habitats.Secondly, we should take action to help animals in everyday life. Even a small action can make a big difference. Finally, making people understand the problems animals face also helps. The more we learn about how human activities harm the environment, the better we'll be able to change our behaviour. |阅|读|技|能|提|升| 本文的语篇类型为说明文。它主要是对客观事物或事理的介绍说明，与记叙文、议论文相比，说明文更强调科学性和客观性。本文围绕“鲨鱼是危险的动物还是濒危动物”这一问题进行客观讨论，进而引发人们对保护海洋动物这一话题的关注。 本文第一段为引子，以“the 1975 film Jaws”导入说明对象，第二段接着讲该电影对鲨鱼的影响，故一、二段为一个独立部分，讲述“sharks are dangerous”；第三段用表示时间顺序的词“After 1975”引出捕杀鲨鱼的后果，第四段以1980年Peter Benchley的经历说明人们开始意识到捕杀鲨鱼的错误，故三、四段为一个独立部分，讲述“sharks are endangered”；最后一段描述保护鲨鱼的现状“Today ...”。全文有明显的时间线，因此是以时间顺序来行文的。 02 课文写法借鉴 (一)赏开篇之亮 1．“SHARKS: DANGEROUS OR ENDANGERED？”本文标题直接点明了文章的主题，即人们对鲨鱼的两种观点，同时引发读者思考。DANGEROUS和ENDANGERED是同根词，意义上却有巨大的反差，从而使得标题醒目且能吸引读者。 2．本篇文章采用了场景式开头，即开篇描述了电影《大白鲨》的一段惊悚镜头，渲染了背景氛围，且有助于吸引读者并导入话题。 (二)赏用词之妙 1．Jaws was a great success, attracting huge audiences and winning many awards. 赏析：本句中的huge audiences和 many awards形式对称，huge和many均强调数量之多，从而凸显了《大白鲨》这部电影取得了巨大成功。另外句中的success意为“成功的人(或事物)”，为抽象名词具体化，其前需加冠词；success表示“成功”时为不可数名词。 2．People just wanted them killed. 赏析：本句中的副词just着重强调了人们想要杀死鲨鱼的错误意识，just用来强调程度。常见的程度性副词还有：much, little, very, rather, so, too, quite, perfectly, enough, extremely, even等。 3．He came to see people as a danger to sharks, rather than the other way round. 赏析：本句中的“rather than the other way round”照应前半句中的“see people as a danger to sharks”，表示与其截然相反的情况，表达简洁又暗含强烈的谴责之意。 [提能训练|完成句子] ①Taking everything into consideration,_______________________. 总的说来，这项活动非常成功。 ②I waited an hour_____________. 我等了一小时就是为了见你。 ③All in all, young people should be forward-looking _____________ _______________. 总而言之，年轻人应该往前看，而非对过去一直留恋。 the event is a great success just to see you rather than the other way round (三)赏句式之高 1．Many people who saw the film started to believe that sharks were bad animals that ate humans. 赏析：本句中使用了两处定语从句分别修饰Many people及bad animals，解释说明了是许多看过电影的人认为鲨鱼是吃人的有害动物，从而让表达更具体、更精准。 2．Fortunately, not everyone who watched the film Jaws became afraid of sharks — some became interested in understanding them. 赏析：本句中部分否定与who引导的定语从句相结合使用，说明了并非所有看过电影的人都害怕鲨鱼，然后运用破折号对这一观点做了进一步解释说明。 [提能训练|完成句子] ①Put simply, potential is your natural ability ___________________when you try hard enough. 简而言之，潜能就是当你足够努力时才可以开发的天赋。 ②_____________________________ must often overcome many challenges along the way. 那些做出重大发现的人必定要经常克服前进道路上的许多挑战。 ③But ____________is happy about the new method of expression. 但并非每个人都对这种新的表达方式感到满意。 that can be developed Those who make great discoveries not everyone (四)赏逻辑之巧 1．第二段第一句“People have always been scared of sharks, but Jaws made things worse.”在文中起到承上启下的作用。既承接第一段，指出电影《大白鲨》强化了人们对鲨鱼的恐惧心理， 又引领后文，继续讲述人们的恐惧心理以及在这一恐惧心理的影响下对鲨鱼展开的猎杀行为。 2．本文按时间顺序展开，各段内容由表示时间顺序的词汇引领，如第一段中的1975，第二段中的At that time，第三段中的After 1975，第四段中的In 1980以及From that day on, 最后一段中的Today。这些时间线索词将整篇文章自然衔接在一起，实现了语意上的畅通，逻辑上的连贯。 03 美文阅读润心 地球——人类唯一的家园。关爱地球、保护环境，践行绿色生活，是我们义不容辞的责任与义务。与此同时，我们应该保护好动植物，与生物和谐相处，保持生物的多样性，维持自然平衡。这样才有利于人类健康发展，社会不断进步。 The world's animal populations have decreased by more than two-thirds since 1970, according to a recent research from the World Wildlife Fund (WWF)． Wildlife populations in Latin American and the Caribbean Sea area were greatly affected. The research showed a 94 percent drop in those areas in over 50 years. Wildlife populations in river and lake habitats decreased the most. Freshwater populations have reduced by an average of 83 percent since 1970. For example, one population of pink river dolphins in the Amazon River area of Brazil fell by 65 percent between 1994 and 2016. These findings are a red flag that warns of a larger system failure on the horizon. Even one species' population reduction can affect other species, eventually impacting the ecosystem's ability to function. Humans depend on a stable climate, predictable weather patterns, and productive farmland and fisheries to thrive (蓬勃发展), but the current trends are severe enough to threaten many life-sustaining systems. [阅读理解] 1．Which may be the main cause of the decrease of the wildlife populations in the future? A．Illegal hunting. B．Global warming. C．Land-use change. D．Environmental pollution. √ 2．How is Paragraph 3 mainly developed? A．By listing data. B．By telling a story. C．By referring to a concept. D．By analyzing the causes. √ 3．Why does the author worry about current trends? A．Because the reduction of species will impact the ecosystem. B．Because humans will be the biggest threat to the wildlife. C．Because the increase of species' population will threaten human beings. D．Because humans have been expecting to thrive. √ [素养积累] 1．由文积词汇 decrease v．　　　　　　　　 减少；下降 on average 平均起来 threat n. 威胁 primary adj. 主要的 biodiversity n. 生物多样性 habitat n. 栖息地 ecosystem n. 生态系统 stable adj. 稳定的 predictable adj. 可预测的 pattern n. 模式 address v. 处理 undoubtedly adv. 无疑地 2．据文悟句式 句①　which引导定语从句修饰先行词populations。 句②　if引导条件状语从句，driving wildlife to extinction and threatening the wholeness of the ecosystems on which we all depend是两个并列的动词-ing形式作结果状语。其中，on which we all depend是“介词＋which”引导的定语从句，修饰先行词ecosystems。 04 课时跟踪检测 Ⅰ.阅读理解 A There are many things that we can do in our own ways which will help save the environment.What are some of these ways to save the environment? Let's take a look at a list of them. There won't be enough water before we need to fight for clean and fresh water.That is why saving water and preventing water pollution becomes very important.Keep simple things in mind like turning off the tap when you are brushing teeth.Don't often take a shower.Don't pour oil into the drains.Don't throw rubbish into the river. Save paper to save trees.Make sure that you use both sides of paper before throwing it away.If possible, try to use paper as little as you can and do not forget to recycle paper.Also, using cloth bags instead of paper bags can save much paper.This is one of the best ways to save our environment. Recycling is important.It makes sure that the environment is not more polluted.Recycling does not simply include recycling paper, but things like plastic, metal and office supplies like pens, ink and more.This makes sure that they are changed into materials that are reusable and also put less pressure on the environment. What are the ways to save energy? Turn off the lights and computers before you leave.Use cold water instead of hot water to wash clothes, use the stairs instead of the lift and keep the air conditioner on moderate setting (设置) to save energy. In a word, try our best to do something to save our environment, and we will do something helpful to save ourselves. 语篇解读：本文是一篇说明文。文章主要讲述了每个人都有义务也有能力保护人类共同的地球，以及我们力所能及的可以保护环境的几种方法。 1．What does the second paragraph mainly talk about? A．Saving water.　　 B．Saving paper. C．Recycling. D．Planting trees. 解析：段落大意题。根据第二段内容尤其是第二句可知，第二段主要谈及节约用水。 √ 2．How can we save trees according to the passage? A．By saving water. B．By using less paper. C．By saving energy. D．By planting trees. 解析：细节理解题。根据第三段中的“Save paper to save trees.”可知，节约纸就可以拯救树木。 √ 3．Why is recycling important? A．Because it can save some money. B．Because there are many old things. C．Because it helps us keep healthy. D．Because it can save our environment. 解析：推理判断题。根据第四段内容可知，回收利用能减少环境污染，故推断，回收利用可以保护环境，因此很重要。 √ 4．The underlined word “moderate” means_________. A．high wind B．high temperature C．proper D．open 解析：词义猜测题。根据下文中的“to save energy”并结合常识可知，“适度设置”空调温度可以节约用电，也就是节约能源。由此可知moderate意为“适当的”，与proper同义。 √ B When you go on vacation next time, make sure to take lots of pictures of the wildlife you see.These photos can help save different types of wildlife because of a new field called “imageomies”．Imageomies uses computers to study pictures of wildlife and learn information from them. Until recently, scientists didn't have the technology to analyze (分析) the data in wildlife photos.But now, machine learning and computer vision are helping researchers unlock valuable information hidden in these images. There are platforms where people can share their wildlife photos, like eBird, iNaturalist and Wildbook.These platforms help scientists keep track of different species and create databases.If you have rare photos of wildlife, it's a good idea to share them on these platforms. Scientists have limited time and resources to study all endangered wildlife in the world.By using artificial intelligence (人工智能) to analyze public photos, we can learn more about different species and their behaviors.This technology can even help us find things in photos that humans might miss. It's important to use the collected information responsibly and protect it from poachers (偷猎者)．If we do that, imageomies can not only help save wildlife but also contribute to other fields like medicine and agriculture. 语篇解读：本文是一篇说明文。文章主要介绍了一种名为“imageomies”的领域，可以通过分析野生动物的照片来发现有价值的信息，从而保护野生动物。 5．How can imageomies help scientists study wildlife? A．By offering information from wildlife. B．By analyzing the data in wildlife photos. C．By analyzing the trend of human population. D．By knowing the origin of biological processes. 解析：细节理解题。根据第二段可知，imageomies通过分析野生动物照片中的数据帮助科学家研究野生动物。故选B。 √ 6．What are the platforms where people can share their wildlife photos? A．eBird, iNaturalist and Wildbook. B．Imageomies, eBird and Wildbook. C．Imageomies, eBird and iNaturalist. D．Photos of wildlife, iNaturalist and Wildbook. 解析：细节理解题。根据第三段的“There are platforms where people can share their wildlife photos, like eBird, iNaturalist and Wildbook.”可知，人们可以在eBird、iNaturalist和Wildbook上分享他们的野生动物照片。故选A。 √ 7．Why should people share their rare wildlife photos on platforms? A．To appreciate the beauty of wildlife. B．To contribute to the public safety. C．To inspire others to protect nature. D．To help scientists study wildlife. 解析：细节理解题。根据倒数第二段可知，人们在平台上分享他们的珍稀野生动物照片是为了帮助科学家研究野生动物。故选D。 √ 8．Which can be the best title for the text? A．Computers help identify the biological features B．Poachers stop killing threatened animals C．Photos can save wild species D．Photos can protect our environment 解析：标题归纳题。文章主要介绍了一种名为“imageomies”的领域，可以通过分析野生动物的照片来发现有价值的信息，从而保护野生动物。故选C。 √ Ⅱ.阅读七选五 Being eco-conscious (生态意识) doesn't have to stress you out or expand your budget.Learn how to be kind to the Earth while also enjoying life.Here are some small but significant steps you can take. Go LED with your lighting.There are several benefits of switching to energy-saving light bulbs (灯泡)．______ Though the upfront cost might be more than traditional bulbs, the average savings on LED bulbs is $75 a year.Plus, you won't be spending nearly as much time changing burnt-out bulbs as you used to: LED bulbs can last years or even decades, depending on the type you buy. 9 ______ On those days when you're out of patience and low on time, don't blame yourself if you have to use paper plates and cups instead of your dishwasher — especially if you're hosting a large crowd.Generally, dishwashers are required to be designed to use no more than 5 gallons of water per cycle and 307 kWh/year.______ So in this point, using recyclable paper plates can save more. Turn off water when you are not using it.Every drop does count when it comes to water usage.______ Don't ignore this little time.If everyone does in this way, we can save a lot of water every day.There is also great low-flow equipment for showers and toilets.But if you don't want to change them, you can just switch them off when you're not using them.______ 10 11 12 13 A．Don't always use paper plates. B．One of them is saving money. C．This is a good way to save water. D．Don't feel guilty about using paper plates. E．Besides, a good dishwasher can save more electricity. F．That includes the two minutes you spend brushing your teeth. G．That's still quite a lot of water and energy to use every day. 语篇解读：本文主要讲述了为了节省能源，人们在日常生活中应该注意的一些细节。 9．选B　根据空后一句“Though the upfront cost might be more than traditional bulbs, the average savings on LED bulbs is $75 a year.”可知，B项“其中一点就是省钱”符合语境。 10．选D　根据本段内容，尤其是空后的“don't blame yourself if you have to use paper plates and cups instead of your dishwasher”可知，D项“不要为使用纸盘而感到内疚”符合语境。 11．选G　根据前文的“no more than 5 gallons of water per cycle and 307 kWh/year”可知，洗碗机每循环使用不多于5加仑的水，每年使用307千瓦时，故G项“每天仍会消耗大量水和能源”承接上文，符合语境。 12．选F　根据空前“节省每一滴水都是值得的”及空后“不要忽视这短暂的时间”可知，F项“这包括你用来刷牙的两分钟”承上启下，符合语境。 13．选C　上文提到如果不想更换设备，可以在不使用时将它们关闭；C项“这是一个节水的好方法”承接上文，符合语境。 本课结束 更多精彩内容请登录：www.zghkt.cn which included more than 5,000 species.The researchers found that population sizes had reduced by 69 percent on average. They said the loss of forests, human exploitation (开发) of the environment, pollution, and climate change were great causes of the loss. Land-use change is still the biggest threat to wildlife. However, the researchers added, “If we cannot limit warming to 1.5℃， climate change is likely to become the primary cause of biodiversity loss in the coming years.” Our future depends on reversing (扭转) the loss of nature just as much as it depends on addressing climate change. And you can't solve one without solving the other. Everyone has a role in reversing these trends, from individuals to companies to governments. populations will undoubtedly continue to fall, driving wildlife to extinction and threatening the wholeness of the ecosystems on which we all depend. $