UNIT 6 Section Ⅰ “Understanding ideas”的课文习读环节(课件PPT)-【新课程学案】2025-2026学年高中英语选择性必修第一册（外研版）

UNIT 6　 Nurturing nature 1 把握单元 素养目标 主题意识 本单元的主题是保护自然环境和自然文化遗产。通过了解中外著名的自然文化遗产，感受自然的美丽与神奇，产生保护自然文化遗产的意愿，加深对人与自然和谐共处这一理念的认识。培养热爱自然、保护环境、与自然和谐共处的意识。 语法项目 归纳现在完成进行时的概念及用法，理解其功能，并能灵活运用。 语言输入 听 能够听懂与生态旅游相关的话题。 读 能够读懂与保护自然文化遗产相关的文章；能够运用阅读策略，从文本中提取信息并解读文本。 看 通过观看世界自然文化遗产的视频，了解相关知识，同时培养理解视频主旨大意并从视频中提取关键信息的能力。 续表 语言 输出 写 能够分析招聘广告的基本要素，并根据所给文段内容，仿写一则招聘广告。 说 能够恰当使用所学词汇与表达方式说服他人，并学会表示折中、妥协的表达方式；能就与生态旅游相关的话题进行讨论。 续表 Section Ⅰ　“Understanding ideas”的课文习读环节 目 录 课时跟踪检测 (一)理清文脉结构 泛读课文，完成以下学习任务 the “roof of the world” delicate safely and freely wetlands and grasslands Oxygen-making stations a long wall magical landscapes (二)把握主旨大意 The text mainly tells us_________. A．the Qinghai-Xizang Railway is the impossible railway B．workers met many difficulties in the construction process of the Qinghai-Xizang Railway C．the building of the Qinghai-Xizang Railway and the challenges the workers met D．the Qinghai-Xizang Railway is what we should be proud of √ 精读课文，完成以下学习任务 (一)阅读理解 1. Why was the “Sky Railway” considered to be impossible? A．It was built in a place with too much radiation. B．It was not easy to protect the workers. C．Too many bridges had to be built along the railway. D．The natural conditions there are tough for building a railway. √ 2．What can we infer from the second paragraph? A．It took the workers less than a year to complete the railway. B．The author was among the construction workers of the Qinghai-Xizang Railway. C．The construction workers paid no attention to the ecosystem. D．The construction workers didn't encounter the challenges foreign experts had expected. √ √ 3．What did the railway workers concern most? A．How to protect the ecosystem along the railway. B．Their own safety while building the railway. C．The great number of bridges along the railway. D．Grasslands and wetlands along the railway. 4．What's the purpose of building Qingshuihe Bridge? A．To prevent trains from falling into the river. B．To protect wetlands and grasslands. C．To allow the animals to move safely and freely. D．To protect permafrost and grasslands. √ (二)阅读表达 What benefits do you think the Qinghai-Xizang Railway has brought to the people living along the railway? It provides them with more job opportunities, makes it more convenient to travel all over the country and brings them a happier life. |阅|读|技|能|提|升| 明晰所至，把握所感 本文是一篇游记。游记一般以游览路线为线索，随着时间的推移、空间的转移依次记述游览过程中所见到的景物，并抒发自己的感受和体验。读文时，应按照作者的游览过程，明晰作者所到之处，也就是作者的游踪。同时，把握作者在游览过程中所获得的感受——可以通过直接表现心理、感受、思想、情感方面的关键词，也可以借助反映 作者内心情感的语言、行动、表情之类的描写把握作者的所思所感。如本文作者描写了自己乘坐火车进藏的“天路”之旅，在描写青藏铁路沿线风景的同时，回顾了建设者们在青藏铁路修建过程中，始终以生态保护为前提，克服重重困难，最终建成这条“不可能建成的”铁路的历程，同时表达了自己作为其中一名建设者的自豪之情。 (一)赏用词之妙 1．Sitting back in my seat, I can't quite believe that I'm about to travel along the railway that many foreign experts claimed was “impossible”． 赏析：本句中的can't quite believe写出了作者内心的激动：即使人已在火车上，仍不敢相信这一事实。后半句中的impossible一词加了引号，说明尽管修建青藏铁路的难度很大，但对于勇敢无畏的铁路工人来说没有什么是不可战胜的。 2．The train has been racing along steadily since it left Xining. 赏析：此处的race一词为名词动用，写出了火车速度之快；steadily则描写了行驶之稳。简单的两个词描绘了火车在青藏线上平稳快速向前行驶的景象。 3．A group of Tibetan antelopes is moving under the bridge, with some stopping to eat grass at their leisure. 赏析：句中动词move, stop, eat的使用，化静态为动态，让描绘的画面更加生动鲜活，增加了语言的灵动性。 4．The journey has been flying by, and before I know it, we have reached Tanggula Station. 赏析：句中的 flying by和before I know it形象地描述了火车的速度之快，旅程之便捷、舒适，也从侧面印证了铁路工程质量之高。 5．Using thousands and thousands of sandbags, we built a twenty-kilometre wall along the lake to protect it from construction waste. 赏析：句中的thousands and thousands of及 twenty-kilometre从侧面描写了工人们为保护措那湖所做的努力。 [提能训练|完成句子] ①Standing on the podium , _____________________________. 站在领奖台上，我仍然不敢相信，我做到了。 ②They ____________________towards the finishing line. 他们正争先恐后地向终点冲去。 ③Miss Wang's class was so wonderful that forty five minutes_____________________________. 王老师的课是如此精彩，以至于不知不觉间四十五分钟的时间飞逝而过。 I can't quite believe that I did it are racing each other had flown by before we knew it (二)赏句式之高 1．Taking years to complete, the Qinghai-Xizang Railway is a record of all of our efforts to overcome the most difficult engineering challenges. 赏析：本句中运用了分词作状语以及不定式作后置定语，言简义丰地讲述了青藏铁路历时数年建成，凝聚着铁路工人攻克种种工程难题的全部心血。 2．Water birds playing in the lake, and cattle and sheep wandering the grasslands bring the scenery to life. 赏析：本句中采用了动名词的复合结构作主语，刻画了水鸟在湖面嬉戏，牛羊在草原游荡的生动画面。 [提能训练|完成句子] ①_______________, she gazed at her surroundings with large, innocent eyes.(分词短语作状语) 她快乐地唱着歌，用一双天真的大眼睛注视着周围的环境。 ②____________________________ is not smooth, and it is full of challenges and difficulties, which we should be brave to face.(不定式作后置定语) 去实现成功的道路不会平坦，充满了挑战和困难，我们应该勇敢地面对它们。 Singing happily The journey to achieve success (三)赏描摹之韵 1．(场景描写)The first landmark to catch my eye is the splendid Qingshuihe Bridge, the world's longest bridge built over permafrost.Look! A group of Tibetan antelopes is moving under the bridge, with some stopping to eat grass at their leisure. 赏析：此处的catch my eye及Look, is moving采用了动态的手法来描写清水河大桥的景色，生动地呈现出作者乘坐火车浏览着窗外美丽的高原风光的画面。第二句中的with复合结构丰富了画面的细节，让读者犹如亲见，at their leisure则暗示了在修建铁路时也给予了当地环境充分的保护。 2．(写作手法)To prevent damage to wetlands and grasslands, 675 bridges with a total length of about 160 kilometres were built between Golmud and Lhasa.We even moved 140,000 square metres of wetland to a new area in order to protect its distinct ecosystem. 赏析：本段运用了列数字的写作手法，客观严谨地呈现了为避免破坏湿地和草原，人们在青藏铁路的修建过程中所作出的种种努力。体现了语言的准确性，让文章内容更具说服力。 (四)赏修辞之功 The words “railways like massive dragons are winding among the mountains” seem particularly vivid as I travel across the “roof of the world”． 赏析：此处使用了借代修辞，借roof of the world代指青藏高原，突出了青藏高原的鲜明特征，语言精练别致，增添了文章的美感。 [提能训练|翻译句子，注意借代修辞的使用] ①The book was translated by several hands. ________________________ ②The kettle's boiling.Let me make us some tea. _________________________ 这本书由几个人翻译完成。 水开了，我来给咱们泡茶。 地球是我们赖以生存的家园。建设一个安全、健康、温馨的家园，是我们每一个人的共同心愿，更是我们每一个人应尽的责任。面对日益恶化的环境和日趋枯竭的资源，每个人都应行动起来， 共同保护不可替代的地球家园，共同医治生态环境的累累伤痕，共同营造和谐友好的人类文明氛围。 In 2018, I wanted to do something to bring change for people in my community. I carried out research to understand the problems affecting them and found that climate change was the greatest threat. When I realised many people in the rural areas faced fatal impacts such as landslides, floods and droughts, I decided to stand up. Seeing climate change threaten the availability of food and water in my country was a wake-up call. ① We are focused and very clear with our demands.We are not afraid of holding governments and corporations accountable for the climate crisis because the science is clear.We will not give up because our future is at stake.We need to demand for climate action as our lives depend on it too, because we do.Farmers in Ontario stood up against a proposed mega quarry (采石场) in their land.They held festivals to draw attention, they spoke up against corporate mining which threatened their groundwater and soil, they mobilised (动员) many people to stop it and in 2012, the mining company withdrew their plans. I hope to see the end of the fossil fuel industry, and we need renewable energy.We need sustainability in every sector through green building and clean transportation.I hope to see recovery of our ecosystems through planting more trees， having urban forests and protecting wildlife. Our existence depends on that of our ecosystems.I hope to see more recovery projects built in the most affected communities. ② There are many climate movements all over the world and most have social media accounts.Find a local group that you can work with to demand climate action.When people are united, they cannot be defeated.It is everyone's duty to protect our home from being damaged. [阅读理解] 1．Why did the author take immediate action? A．He wanted to change people in his community. B．He reminded people of valuing food and water. C．He was aware of the danger of the climate change. D．He was interested in the problems in the rural areas. √ 2．What can we infer from the third paragraph? A．Renewable energy has replaced the fossil fuel. B．More recovery projects have been built in many communities. C．The fossil fuel industry does harm to our ecosystems. D．The fossil fuel industry doesn't account for our existence. √ 3．What is the purpose of this text? A．To appeal to people to unite to protect environment. B．To clarify the author's contribution for the community. C．To recommend us a new kind of renewable energy. D．To show the importance of banning the fossil fuel industry. √ [素养积累] 1．由文积词汇 threat n．　　　　　　　　 威胁 landslide n. 山体滑坡 stand up 勇敢地面对 availability n. 可利用性 wake-up call 让人警醒的事 accountable adj. 负有责任的 at stake 濒临险境 2．据文悟句式 句①　to understand为动词不定式在句中作目的状语； affecting them为现在分词短语作后置定语，修饰problems; that climate change was the greatest threat为that引导的宾语从句。 句②　三个动名词短语在句中作介词through的并列宾语。 课时跟踪检测 (标 语篇配有教师讲评课件) Ⅰ.阅读理解 A I first realized that plastic was a serious matter for our planet during my travel in Western Australia.One day about 12 years ago.I stopped at a supermarket along the Coral Bay coast to buy some groceries.But the lady at the counter told me that the supermarket didn't sell any shopping bags to prevent plastic in the ocean and help preserve the endangered turtles (海龟) living in that area.After a first reaction of surprise, I gathered all purchases in my arms and left, reflecting on what I had been told. The experience in that trip made me more conscious about my impact and pushed me to adopt various habits to travel and live more sustainably.For example, I always carried a cotton bag when I went shopping. My travel to Indonesia was another life-changing experience that strengthened my determination to turn to a zero-waste lifestyle.In Indonesia, finding safe drinkable water was always a challenge, so I traveled with my water bottle, managing to avoid almost entirely the use of plastic during my trip. However, I was seriously struck by my stay on the Libaran Island, where a sustainable and turtle conservation project was launched 10 years ago.Despite the big efforts by the project staff and the community in cleaning up the beaches and creatively reusing plastic, the shore was washed daily with tons of plastic coming from the tides.Walking on a carpet of plastic that almost prevented me from seeing the beach underneath was quite shocking. Facing this global issue in person, I felt a sense of sadness and anger that soon turned into determination: to do as much as possible to reduce plastic in my life.Sometimes we might feel helpless in front of big problems, but we should be aware that small changes could actually make a difference step by step! 语篇解读：本文是一篇夹叙夹议文。作者在旅行中意识到塑料污染的严重性，随后决定通过采取可持续的生活方式来减少塑料的使用。 1．How does the author lead in the topic of the text? A．By reflecting on the present life. B．By looking into the future environment. C．By introducing the previous achievements. D．By recalling the past shopping experience. √ 解析：写作手法题。根据第一段首句可知，文章一开始作者回忆起12年前在澳大利亚的旅行中的一次购物经历，这次经历让作者意识到塑料对地球的影响。由此推知，作者通过回忆过去的购物经历引入了文章的主题。 2．What did the author decide to do after the trip about 12 years ago? A．Cut back on travel. B．Shop less frequently. C．Lead a green life. D．Purify drinking water. √ 解析：细节理解题。根据第二段中的“The experience in that trip ...and live more sustainably.”可知，通过这次旅行，作者决定过一种绿色生活。 3．What do we know about the project in paragraph 4? A．It had no clear goal. B．It didn't work out very well. C．It met the islanders' needs. D．It was intended to prevent turtle attacks. √ 解析：推理判断题。根据第四段中“Despite the big efforts by the project staff ...daily with tons of plastic coming from the tides.”可知，尽管活动的工作人员和社区在清理海滩，可是每天还是会有成吨塑料。由此推知，该活动收效甚微。 4．What does the author think of the plastic problem? A．It is permanent. B．It is manageable. C．It is easy to solve. D．It is lacking in attention. √ 解析：推理判断题。根据最后一段中的“ we should be aware that small changes could actually make a difference step by step！”可知，作者相信小的改变一定可以产生大的影响。由此可知，作者认为塑料问题一定是可以解决的。 “The climate time bomb is ticking，” said UN Secretary-General António Guterres at a meeting. Preventing global warming from reaching the 1.5℃ limit is “achievable” but it will take a giant leap in climate action, Guterres added. As cities develop, some sources of carbon emissions (排放) may be hard to notice for most people, for example, the bricks used in buildings. A company has produced bio-based cement (水泥), which can sharply cut emissions during traditional cement production. “We grow cement the same way nature does，” wrote the company's website. How the cement is “grown” is based on biomineralization, the process by which living organisms produce minerals. One example of biomineralization is coral reefs. Massive reef structures are formed when each individual stony coral produces calcium carbonate, a kind of mineral. Although the stony corals are tiny, one reef structure, built by millions of stony corals, can grow to weigh several tons. This bio-based cement alternative is called Biolith. During the production of each Biolith tile, bacteria and nutrients are mixed with sand. Organisms then produce calcium carbonate by absorbing a liquid made of calcium and nitrogen (氮). However, the process doesn't change the size of the Biolith tile instead, it increases the density. The produced calcium carbonate forms bridges between the grains, strengthening the unit from within. It takes less than 72 hours to let a Biolith tile “grow” fully, while traditional concrete requires about 28 days to make a brick. The company aims to “remove 25 percent of carbon emissions from the concrete industry by 2030，” according to its website. Traditional concrete is made of crushed stones. The process involves heating the stone to temperatures greater than 1,300℃， during which carbon dioxide is emitted. The manufacture of Biolith, however, doesn't involve heating, which greatly reduces carbon emissions. The company plans on increasing the use of bio-based bricks, covering 35,000 square meters in Europe by the end of this year. 语篇解读：本文是一篇说明文，主要介绍了某公司生产出了生物水泥，可以大大减少传统水泥生产过程中的碳排放。 5．What is biomineralization? A．The process of producing bio-based cement. B．The process of controlling calcium carbonate. C．The process of producing minerals by living organisms. D．The process of absorbing a liquid made of calcium and nitrogen. 解析：细节理解题。根据第三段中的“How the cement ...produce minerals.”可知，生物矿化是生物产生矿物质的过程。故选C。 √ 6．According to the passage, which of the following is TRUE about the production of Biolith? A．It requires temperatures greater than 1,300℃. B．It takes as long as traditional concrete to fully harden. C．It involves the use of living organisms to create calcium carbonate. D．It releases more carbon dioxide than traditional concrete production. 解析：细节理解题。根据第四段中的“This bio-based cement ...calcium and nitrogen (氮)．”可知，文章中关于生物石的生产，它涉及到利用生物有机体来制造碳酸钙。故选C。 √ 7．What is the main advantage of Biolith over traditional concrete? A．It makes bricks larger and more durable. B．It requires no heating, cutting carbon emissions. C．It reduces the amount of sand used in construction. D．It reduces the time needed for concrete to set by half. 解析：细节理解题。根据最后一段中的“The manufacture ... reduces carbon emissions.”可知，与传统混凝土相比，生物石的主要优势是它不需要加热，减少了碳排放。故选B。 √ 8．Which of the following best summarizes the purpose of the article? A．To explain how climate change affects coral reefs. B．To highlight the difficulties in creating eco-friendly cement. C．To discuss global climate goals and their impact on construction. D．To describe a company's efforts to reduce emissions in the concrete industry. 解析：推理判断题。这篇文章的目的是介绍某公司为减少混凝土行业的碳排放量所做的努力。故选D。 √ Ⅱ.阅读七选五 In the face of wildlife loss and habitat destruction, it's easy to feel powerless to improve.But any action you take, no matter how small, will help restore the world to its natural balance.Here are 4 things you can do to help wildlife. Think twice before landscaping. _____ But unless you're confronting a genuine safety issue, remember that what's unpleasant to you is sweet home to squirrels, birds, worms and other animals that you might not even know are there.If you must landscape your yard, do so in a way that won't drive away native wildlife. 9 Keep your cats indoors. It's ironic that many people who claim to love wildlife have no problem allowing their cats to roam (闲逛) freely outside.Cats are animals, too. _____ Outdoor cats, however, don't think twice about killing wild birds.In case you're thinking about “warning” the birds by attaching a bell to your cat's collar, don't bother: Birds have an inborn tendency to flee loud, startling noises, not jingling pieces of metal. 10 Don't feed any animals but birds. That deer that wanders into your backyard might look hungry and helpless. _____ Giving food to animals accustoms them to human contact, but not all human beings are as warm-hearted as you are.Feeding wild birds, on the other hand, is OK as long as you don't have outdoor cats and you provide a meal in keeping with the bird's natural diet. _____ 11 12 Clean up litter (not only your own)． If you're concerned about protecting wildlife, you know better than to litter.But it's not enough to keep your own yard or picnic area clean.You should go the extra mile and pick up cans and bottles left by other people. _____ 13 A．Choose nuts and seeds rather than processed bread. B．It seems cruel to keep them shut up inside the house. C．However, if you feed it, you won't be doing it any favors. D．Most people don't want wild animals to destroy their roses. E．Small animals can easily get trapped in or injured by this litter. F．If you have the space, establishing a “mini meadow (草地)” as a border or boundary area is another effective way to attract birds, as well as beneficial insects. G．If you have just purchased a house or a piece of land, you might be tempted to chop (砍) down unsightly trees. 语篇解读：本文是一篇说明文。文章主要介绍了为了帮助野生动物，你可以做到的四件事。 9．选G　结合小标题“Think twice before landscaping.”与本段最后一句可知，本段建议大家在改造住所时，要考虑到对周围野生动植物的影响。由下文中的But可知，上下文是转折关系。G项“如果你刚买了房子或者一块地，你可能会忍不住去砍倒那些难看的树木。”符合语境，其中的“chop (砍) down unsightly trees”就是landscaping的具体做法。 10．选B　下文“Outdoor cats, however, don't think twice about killing wild birds.”指出，把猫放出去，它们会吃野生动物。由however可知，前后句子是转折关系，故选项B“把它们关在屋子里似乎很残忍。”符合语境，且选项B中的keep them shut up inside the house呼应本段标题“Keep your cats indoors.”。 11．选C　根据本段小标题“Don't feed any animals but birds.”可知，要保护动物，我们就要克制住给野生动物喂食的想法。结合空前一句可知，跑到你家后院来的野生鹿看起来很饿、很无助，但是也不应该喂它们。C项“然而，如果你喂它，不会给它带来任何好处。”呼应本段主题，符合语境。 12．选A　此处前一句提到，给野生鸟类喂养与它们食谱中一致的食物是可以的，那就意味着尽量给它们喂食纯天然未经加工的东西，A项“选择坚果和种子，而不是加工过的面包。”符合语境。 13．选E　此段的小标题“Clean up litter (not only your own)．”告诉我们，要保护野生动植物，我们要做的不仅是随时清理自己产生的垃圾。上文“You should go the extra mile and pick up cans and bottles left by other people.”指出，我们要捡起别人留下的易拉罐和瓶子。空处承接上文，指出这么做的原因，即能保护野生动物，E项“小动物很容易被这些垃圾困住或因此受伤。”符合语境。 本课结束 () $$