Unit 3 Section Ⅰ TOPIC TALK(Word教参)-【学霸笔记·同步精讲】2026-2027学年高中英语选择性必修第一册（北师大版)

本高中英语讲义围绕环境保护主题，构建“词汇-听力-表达-写作-应用”连贯学习支架。课前通过10个核心短语清障，课中结合教材听力3.1和3.2开展选择与填空训练，再通过情境对话选择及补全提升表达能力，最后聚焦threat、switch等词汇及as引导定语从句句型，辅以分层作业巩固。 该资料以语言能力培养为核心，整合听说读写模块，听力材料贴近真实讲座情境，写作词汇解析含教材原句与高考真题，助力思维品质提升。话题聚焦环保与野生动物保护，渗透人类命运共同体意识，分层作业兼顾基础与能力，课中辅助教师高效授课，课后帮助学生查漏补缺。

Section Ⅰ　TOPIC TALK 听说课前清障 1.为了　　 in order to 2.转到　　switch to 3.尽快　　as soon as possible 4.减少　　cut down 5.起某种作用　　have a role 6.do one’s part　　尽自己的职责 7.live a healthier life　　过更加健康的生活 8.in danger　　处于危险中 9.at present　　目前 10.stop ．．．from doing sth　　阻止……做某事 话题听力提能 Ⅰ．听教材听力3.1，回答第1至3题。 1.What does Mei feel strongly after listening to the lecture？（　　） A．To change the way we live． B．To protect the Earth in various ways． C．To learn a lot about the environmental challenges． 2.What is one of the biggest threats to the planet according to Mei？（　　） A．Using oil and coal． B．Using plastic bags． C．Cutting down forests． 3.How does the professor like plastic waste？（　　） A．Recycle the amount of waste． B．Reduce the amount of waste． C．Killing our oceans． 答案：1－3　AAC Ⅱ．再听教材听力3.1，根据所听内容填空。 1.It was by Professor Linda Wei， the environmental expert， wasn’t it？ 2.Well， first， Professor Wei was very passionate about using clean energy． 3.We definitely need to switch to different forms of power as soon as possible． 4.I totally agree．I think we should cut down the use of unrecyclable plastic to protect our planet． 5.That’s a good idea．But of course， as the professor said：“We all have a role to play in protecting the environment．If we all do our part， we can live a healthier life on Earth．” Ⅲ．听教材听力3.2，回答第1至3题。 1.What do people hunt rhinos for？（　　） A．Rhinos’ skin． B．Rhinos’ teeth． C．Rhinos’ horns． 2.What does Dr．Bradshaw suggest doing？（　　） A．Punishing people who hunt rhinos． B．Educating people not to hunt rhinos． C．Setting up reserves for rhinos． 3.When will rhinos die out if people don’t take action to protect them？（　　） A．After 15 years．　 B．After 20 years． C．After 12 years． 答案：1－3　CBB Ⅳ．再听教材听力3.2，根据所听内容填空。 1.I feel very lucky indeed to have Dr．Bradshaw with us today．He works on protecting animals in danger．At present， he is in a rhino protecting programme． 2.Yes， many animals are illegally hunted for something they have． 3.Well， the first step is education — we need to make everyone know hunting these animals is illegal and that these amazing animals are part of the world we live in． 话题表达实战 　　情境一：两人就开车上班对环境的影响展开了讨论…… 　　阅读下面对话，根据语境选择最佳选项。 M： How do you usually get to work？ W： I drive． M：　1　 Can you imagine how good that would be for the environment？ W：　2　 But it’s just so convenient to drive．Every day， I think I should take the subway， but I always end up driving． M： Yes， but when everyone does that， it causes pollution． W： Well， maybe if I sold my car， I would be able to change my habits．　3　 M： Yeah， and you could get some exercise．I always ride my bike to work．I feel so healthy now that I needn’t go to the gym． W： It would be good to get back in shape．I’m so lazy now；　4　 M： Let’s go to the used car market．　5　 W： Sounds good．But I have to drive to the supermarket for my weekly grocery shopping．Let’s go after that． A．I know what you mean． B．I never walk anywhere． C．You know driving is convenient． D．I need cars to buy groceries． E．I wish people would ride bikes more． F．I’ll bet we could get a good price for your car． G．And think of all the money I could save on gas， insurance， and repairs． 答案：1－5　EAGBF 　　情境二：Tom （T）和Mary （M）正在讨论哪些物种需要被保护…… 　　阅读并根据提示完成下面对话。 T：What do you think needs to be protected？ M：In my opinion， 1.pandas need to be protected most （熊猫最需要得到保护）． T：What are your reasons？ M： Pandas are very cute．But they are in danger because their birth rate is very low．Besides， 2.they only eat few kinds of bamboos （它们只吃几种竹子）． T：You needn’t worry too much about it.3.People have taken effective measures to protect them from dying out （人们已经采取了有效的措施来保护它们免遭灭绝）．And now their population has increased．I think some common birds need to be protected． M：Are you kidding？What common birds？ T：Sparrows （麻雀），swallows （燕子），magpies （喜鹊） and so on． M：You are right.4.I haven’t seen such birds for years （我已经很多年没有见过这样的鸟了）．But how can we protect them？ T：We can protect them by using less pesticide and 5.planting more trees meanwhile （同时种植更多的树）． M：Yes， 6.unless we protect the habitat of them （如果我们不保护它们的栖息地）， they will always be in danger． 写作词汇集释 1.threat n．威胁；（灾难等坏事）发生的可能 教材原句　After the lecture， I can see that the use of oil and coal is one of the biggest threats to our planet． 听了讲座后，我了解到石油和煤炭的使用是我们星球最大的威胁之一。 【用法】 （1）a threat to/of sb/sth对某人/某物构成威胁 under threat　　受到威胁 （2）threaten v．　　威胁；恐吓 threaten to do sth　　恐吓要做某事 【佳句】　Firstly， try every means to fight against water pollution， which has become a great threat to sea creatures．　（倡议书） 首先，尽一切努力与水污染作斗争，它已成为海洋生物的巨大威胁。 【练透】　单句语法填空 ①He was threatened （threat） with dismissal if he continued to turn up late for work． ②The loud thunder threatened to interrupt （interrupt） our camping trip， but we were lucky enough to have clear skies after a while． 【写美】　完成句子 ③The entire village was under threat from the spreading forest fire．　（环境描写） 整个村庄都受到了迅速蔓延的森林火灾的威胁。 2.switch vi．& vt．转换，改变 n．转换，改变；开关 教材原句　We definitely need to switch to different forms of power as soon as possible． 我们确实需要尽快转换到不同形式的能源。 【用法】 （1）switch off/on关上/打开（电灯、机器等） switch from ．．．to ．．．从……转变为…… switch over　　换频道 （2）make a switch （in）　　改变（……） 【佳句】　People might switch to using robots for most household chores， saving time and making life easier．人们可能会转而使用机器人来完成大部分家务，节省时间并使生活变得更轻松。 （2026•1月浙江卷）According to experts，we should switch our phones off and on once a day as a security measure．据专家建议，为了安全起见，我们应该每天重启一次手机。 【练透】　语块表达 ①Don’t forget to switch off （关上） all the lights before you leave the classroom． ②Before going to bed， I make sure to switch on （打开） the alarm clock． ③Mom asked me to switch over （换频道） after watching the news． ④It’s time to make a switch （改变）from coal to clean energy for a better environment． 【写美】　完成句子 ⑤The excellent dancer switched from full－time work to part－time work when her first child was born． 当她的第一个孩子出生时这名出色的舞蹈家就从全职工作改为兼职工作。 3.have a role 起某种作用 教材原句　We all have a role to play in protecting the environment． 在保护环境方面，我们大家都可以发挥作用。 【用法】 play an important role/part in ．．．在……中起重要作用/担任重要角色 play the role of sb =play/act the part of sb （在剧中）扮演……角色 take on the role of承担……的角色 play the leading role　　起带头（主要）作用 【佳句】　Trees have an important role in maintaining the ecological balance of the planet． 树木在维持地球生态平衡方面发挥着重要的作用。 【练透】　单句语法填空 ①In the school play， she played the role of the queen with great enthusiasm． ②She decided to take on the role of the team leader in the project． 【写美】　完成句子 ③Regular exercise plays/has an important role in maintaining good health．Besides， you should have a balanced diet． 定期运动在保持健康方面起着重要作用。此外，你应该均衡饮食。 4.urgent adj．紧急的，急迫的 教材原句　That’s an incredibly urgent matter ．．． 这是一件非常紧急的事情…… 【用法】 （1）urge n．　　 强烈的欲望；冲动 vt．　　催促；力劝；大力推荐 have/feel an urge to do sth　　有强烈的欲望做某事 urge sb to do sth　　催促某人做某事 urge that ．．．（should） do sth =It is urged that ．．．（should） do sth 极力主张/强调……做某事 （2）urgently adv．　　紧急地，急迫地 【佳句】　We’re now in urgent need of some popular magazines that can reflect modern British society． 我们现在急需一些能反映现代英国社会的流行杂志。 （2025•1月八省联考）I love animals， and I felt an urge to go to this fundraising event． 我热爱动物，并且迫切想要去参加这次募捐活动。 We should urge people to protect the environment and love nature． 我们应该呼吁人们保护环境，热爱自然。 【练透】　单句语法填空 ①Every time he walks by the bakery， Tom has an urge to buy （buy） a chocolate cake．The smell of fresh bread is just too difficult for him to resist． ②（2025•1月浙江卷）If the information you’re communicating isn’t urgent （urge）， consider sending an email． ③The government always urges （urge） citizens to save water and energy to build a more environmentally friendly society． 【写美】　句型转换 ④We must urge that more people （should） reflect on their own improper behaviour and make changes． →We must urge more people to reflect on their own improper behaviour and make changes．（使用复合宾语） →It is urged that more people （should） reflect on their own improper behaviour and make changes．（it作形式主语） 重点句型解构 ◇ 句型公式：as 引导定语从句 教材原句　Well， as you know， I really feel strongly that we need to change the way we live in order to protect our planet． 嗯，正如你所知道的，我真的强烈感受到，为了保护我们的星球，我们需要改变我们的生活方式。 【用法】 as you can see正如你所看到的 as we have expected　　正如我们所预料的 as is mentioned above　　正如上面所提到的 as is often the case　　情况总是如此 as is reported　　正如所报道的那样 as the old saying goes　　正如谚语所说　 【佳句】　As the old saying goes，“Where there is a will， there is a way．” 正如谚语所说：“有志者，事竟成。” 【写美】　微写作 ①正如你所看到的，孩子们真的受到了激励，他们满怀激情地阅读所有这些书。 As you can see，the children are really encouraged，and they are enthusiastic about reading all of these books． ②大厅里挤满了人，情况总是如此。 The hall， as is often the case， is crowded with people． 维度一：品句填词 1.The wildlife conservation （保护） program focuses on protecting endangered species from extinction． 2.（2025•北京卷）As we know， the environment is facing serious problems， which affect （影响） everyone’s life． 3.She found an interesting item （一条） in the newspaper about space exploration． 4.Environmental activists are concerned about the impact of mining （采矿业） on local ecosystems． 5.A forest fire destroyed thousands of acres of woodland last summer． 6.My phone seems to switch itself off occasionally，which makes me annoyed． 维度二：词形转换 1.But the rising sea level and the carbon pollution causing warming oceans are threatening （threat） their existence． 2.He was caught illegally （illegal） downloading music from the Internet， which he thought was harmless at first． 3.The hunter （hunt） agreed to take us to go hunting tomorrow． 4.Some experts appealed to people to rescue many species from extinction （extinct）． 5.Urgent （urge） measures have been taken to prevent carbon dioxide emissions． 6.The museum tour was so informative （inform）， offering insights into the history of art． 7.I felt incredibly （incredible） ashamed of myself for getting so angry． 维度三：固定搭配和句式 1.China is doing its part （尽自己的职责）in environmental conservation， too． 2.As a member of the international society， we have a role （发挥作用） to play． 3.I have an urge to tell （渴望去告诉） him the secret． 4.As is known/well－known to all （众所周知）， Beijing Opera is one of colourful Chinese cultures． Ⅰ．阅读理解 A 　　（2026•武汉二中高二期中）Born into a family with a deep passion for nature， Bindi Irwin has become a globally recognized wildlife conservationist， following in the remarkable footsteps of her father， the legendary “Crocodile Hunter” Steve Irwin．Growing up at Australia Zoo， founded by her parents， Bindi was immersed in the world of wildlife protection from her earliest years．This unique upbringing instilled in her a profound commitment to conservation that has shaped her life’s work． 　　Bindi’s conservation efforts are channeled through two primary platforms that work in close partnership．As a key leader at Australia Zoo， she oversees comprehensive operations that extend far beyond typical zoo management．The institution serves as a crucial conservation headquarters， housing numerous endangered species and carrying out vital breeding programs while simultaneously （同时） functioning as an educational center that connects millions of annual visitors with the natural world．Through the non－profit organization， Wildlife Warriors Worldwide， Bindi’s conservation impact extends across international borders， funding diverse projects ranging from anti－poaching patrols （反偷猎巡逻队） protecting critically endangered Sumatran tigers to cheetah （猎豹） conservation initiatives in Africa． 　　Beyond her administrative responsibilities in zoo management， Bindi maintains an active role in hands－on scientific research that directly informs conservation practices．She regularly participates in the ongoing saltwater crocodile study conducted in cooperation with the University of Queensland．Furthermore， Bindi has emerged as an influential voice in conservation education， recently authoring a children’s book designed to inspire young readers to discover their own role in protecting the planet． 　　Through these multifaceted efforts — combining leadership， scientific research， and public education， Bindi Irwin honorably continues and expands upon her father’s legacy， demonstrating that dedicated individuals can indeed make a significant difference in preserving our natural world for future generations． 语篇解读：本文是一篇记叙文。文章主要讲述了宾迪•欧文在野生动物保护方面的努力与贡献。 1.What can be inferred from paragraph 1？（　　） A．Bindi Irwin’s father persuaded her to carry on with his job． B．Bindi Irwin’s father had a great passion for killing crocodile． C．Bindi Irwin’s father has had a great influence on her． D．Bindi Irwin’s parents tried to make her a global conservationist． 解析：C　推理判断题。根据第一段第一句可推知，宾迪•欧文的父亲对她有很大的影响。 2.Which of the following statements is true according to the passage？（　　） A．Bindi Irwin has founded Australia Zoo and Wildlife Warriors Worldwide． B．Bindi Irwin’s conservation impact has extended beyond Australia． C．Bindi Irwin participated in scientific research to get recognition． D．Bindi Irwin has recently written a number of children’s books． 解析：B　细节理解题。根据第二段中的Through the non－profit organization ．．． conservation initiatives in Africa．可知，宾迪•欧文的保护影响已经超出了澳大利亚。 3.Which of the following words can best describe Bindi Irwin？（　　） A．Committed and responsible． B．Intelligent and curious． C．Disciplined and ambitious． D．Thoughtful and generous． 解析：A　推理判断题。根据第二段第二句以及第三段第一句可推断出，宾迪•欧文是一个尽心尽力且有责任感的人。 4.What is the passage intended to do？（　　） A．To describe the daily operations of Australia Zoo． B．To introduce Bindi Irwin’s family life and personal hobbies． C．To explain the different species of animals at Australia Zoo． D．To present Bindi Irwin’s role and efforts in wildlife conservation． 解析：D　推理判断题。根据全文内容可知，文章的目的是介绍宾迪•欧文在野生动物保护方面的角色和努力。 B 　　As a small boy， Jim Corbett was amazed by wildlife．He taught himself how to seek animals and birds by the sounds they made．Later， Jim became a tracker and hunter．The authorities asked him to track and shoot man－eating tigers to protect people． 　　Between 1907 and 1938， Jim shot and killed nineteen tigers and fourteen leopards （豹）．He did this on foot， sometimes accompanied by his dogs， and he took many risks to save people’s lives．The first tiger he shot was a Champawat Tiger， a tiger that killed more than 436 people．Jim was regarded as a hero by the locals． 　　Jim wondered why the tigers and leopards were killing people．When he examined many cats that he had shot， eventually he made an important discovery that shocked him．They all had injuries．Some had gunshot wounds from poachers （偷猎者）．Poaching was common because people could sell tiger skins for decoration and tiger bones for medicine．One tiger had a gunshot wound in its mouth， and its teeth were damaged．Other tigers had injuries and then became sick．The reason why they were eating people was that they couldn’t hunt other creatures to feed on． 　　After his discoveries， Jim became interested in conservation．He concentrated on his new mission： saving tigers．He gave lectures and inspired people to respect wildlife — especially the big cats， which he loved and respected．Two years after he died in 1955， the oldest national park in India got a new name： Corbett National Park．It’s a shelter for tigers， leopards， and other endangered animals．There’s even a species of tiger named after Jim called Corbett’s Tiger， of which there may only be 350 worldwide． 语篇解读：本文是一篇记叙文。文章主要讲述了Jim Corbett从猎人变为野生动物保护者的故事。 5.Why did Jim Corbett kill tigers？（　　） A．Because he was the best hunter then． B．Because tigers hurt and killed people． C．Because authorities needed protection． D．Because he could seek birds by sound． 解析：B　细节理解题。根据第一段最后一句可知，Jim Corbett杀老虎是因为老虎伤人害命。 6.How did Jim discover the reason why tigers attacked people？（　　） A．By investigating tigers’ teeth． B．By helping with tigers’ treatment． C．By examining tigers with specific facilities． D．By looking at the tigers’ dead bodies carefully． 解析：D　细节理解题。根据第三段中的When he examined ．．．gunshot wounds from poachers （偷猎者）．可知，Jim Corbett通过仔细检查他射杀的老虎的尸体发现了老虎攻击人的原因。 7.What did Jim do to save tigers？（　　） A．He protected tigers’ habitat． B．He built new shelters for animals． C．He raised people’s awareness of wildlife protection． D．He gave a number of lectures on tigers’ favorite food． 解析：C　细节理解题。根据最后一段中的He gave lectures and inspired people ．．．and respected．可知，Jim Corbett通过提高人们对野生动物的保护意识来拯救老虎。 8.Why was a species of tiger named Corbett’s Tiger？（　　） A．For Jim’s generosity． B．For Jim’s contributions． C．For their birth place． D．For their limited population． 解析：B　推理判断题。根据最后一段中的After his discoveries ．．．and respected．可知，Jim Corbett为保护老虎做了很大贡献；再根据最后一句可知，这种老虎被命名为科比特虎是为了纪念Jim Corbett的贡献。 C 　　（2026•江苏苏州高二期中）When we think about invertebrates （无脊椎动物）， most of us picture bees， worms， or perhaps even a jellyfish．But did you know that at least two－thirds of invertebrates work the night shift， meaning many are unlikely to be seen？ They use phases of the moon and star light to learn about the world and make vital decisions．Many insects use the faint glow of the moon or stars to tell which way is up when flying in complete darkness． 　　For centuries， artificial light has been a symbol of progress．Light has shaped human civilization．But while we celebrate its convenience， we often overlook the darker side of our obsession with illumination （照明）： light pollution．It’s a disturber of ecosystems， with profound consequences for wildlife， human health and energy consumption． 　　A 2021 study found that caterpillar （毛毛虫） populations were 52% lower in areas with street lights．The winter moth （飞蛾） is a small but essential species．In early spring its caterpillars provide a critical food source for blue tit （蓝山雀） chicks．But light pollution disorients （使迷惑方向） the adult moths， disturbs mating and affects egg－laying， leading to fewer caterpillars．With declining caterpillar numbers， blue tits struggle to feed their young． 　　In one sense， light pollution is relatively easy to fix — we can simply not turn on the lights and allow the night to be lighted naturally by moonlight．Logically， this is mostly not feasible as lights are meant for the benefit of humans who are often unwilling to give them up．In the absence of turning off the lights， there are other management approaches we can take to lessen their impact．We can limit their number， reduce their intensity and the time they are on． 　　The extent to which invertebrates have responded to artificial light remains unspecified and it also remains unknown whether they can adapt to additional time changes．These changes likely affect individual fitness， so additional studies are needed to determine the selective pressure artificial light produces．An interdisciplinary （跨学科） approach is required to determine broader scale effects of artificial light on wildlife biodiversity and ecosystem health， and to determine relevant strategies． 语篇解读：本文是一篇说明文。文章主要介绍了光污染对无脊椎动物及生态系统的影响，并探讨了应对措施与研究需求。 9.What do we know about the majority of invertebrates？（　　） A．They use darkness to hide． B．They are active at night． C．They are becoming extinct． D．They are intelligent creatures． 解析：B　细节理解题。根据第一段中的But did you know ．．． be seen？可知，大多数无脊椎动物在夜间活动。 10.What does the caterpillar’s example show in paragraph 3？（　　） A．The effect of light pollution on the food chain． B．The importance of a balanced ecosystem． C．The urgency of saving species through food． D．The challenge in wildlife conservation． 解析：A　推理判断题。根据第三段内容可知，列举毛毛虫的例子表明光污染影响了食物链。 11.What does the underlined word “feasible” in paragraph 4 mean？（　　） A．Odd．　 B．Motivating． C．Crazy．　 D．Workable． 解析：D　词义猜测题。根据第四段中的In one sense ．．． give them up．可知，不开灯从逻辑上讲大多是不可行的，因为灯是为了人类的利益而设置的，人类通常不愿意放弃它们，所以feasible意为“可行的”。 12.What does the author think of potential management approaches？（　　） A．They are innovative． B．They are easy to apply． C．They prove to be effective． D．They call for in－depth research． 解析：D　推理判断题。根据最后一段内容可知，作者认为潜在的管理方法需要进一步的研究。 Ⅱ．阅读七选五 　　Many people are eager to take a trip to Africa to observe wild animals there.13.　　 However， your experiences won’t go smoothly if you make mistakes．Here are some of the biggest mistakes visitors often make when they head into the wild in Africa． 　　They fail to do proper research．Not all parks are created equal．You should understand exactly what you’re booking．It’s important to do your homework on the quality of service provided by the park and the guiding team.14.　　 Otherwise， you may end up regretting it．“The general rule is that you get what you pay for，” one expert suggests． 　　15.　　 While the impression is that the trip usually takes place in warm climates， the temperatures do drop from day to night， so layers （层） are key．Besides， the right colors can help you blend into （融入） the surroundings so that you don’t attract wild animals’ attention．For example， if your trip includes a bush walk， it’s important to avoid black and white． 　　They refuse to listen to the guides．The biggest mistake that people can make is assuming they know everything instead of listening to their professional guides．These guides have undergone necessary training that enables them to be experts in all situations that can come up in the wild．Their job is to keep visitors safe and offer them an amazing experience.16.　　 　　They expect to see animals at every turn．Keep in mind that this is the home of wild animals — not a theme park attraction．The animals’ jobs are far from trying to entertain guests．They won’t come out to welcome you.17.　　 Most of the adventures of viewing wildlife will take place in the early morning and late afternoon when you can watch the animals at their most active． A．They pack the wrong clothes． B．They should consider weather conditions． C．And remember to learn about your park’s standard． D．Such a journey can be extremely wonderful and exciting． E．So you need to wait patiently to enjoy a breathtaking view． F．All the visitors need do is sit back and follow the guides’ directions． G．Some even try to make noises to get the attention of animals for a photo． 语篇解读：本文是一篇说明文。文章主要介绍了游客去非洲观看野生动物时经常会犯的几个错误。 13.D　空前一句说明很多人想去非洲旅行看野生动物；空后一句说明如果犯了错误你的旅行就不会顺 利。D项指出去非洲观察野生动物的旅行是极其美妙和令人兴奋的，同时与下文形成转折关系。 14.C　本段指出的错误是很多人没有做出适当的研究，因此建议应该清楚自己要预定什么，要对公园和导游团队的服务质量做好功课。C项强调了解预定的公园标准，也是去野外观看野生动物前需要了解的东西。 15.A　空后一句说明虽然觉得旅行通常发生在温暖的气候中，但温度从白天到晚上是下降的，所以穿衣要有层次。A项陈述了游客去非洲观看野生动物时，经常打包了错误的衣服，下文围绕该选项内容进行解释说明。 16.F　空前一句说明导游的工作是确保游客的安全并提供一次惊人的体验。F项强调了导游所扮演的重要角色，对上文进行总结，指出游客们应该听从导游的指示。 17.E　空前一句说明动物们不会出来欢迎你，所以空处应该指出游客们要做什么。E项与上文构成因果关系，即动物们不会主动出来欢迎游客，所以游客们需要耐心等待，才能看到令人惊叹的景色。 1 / 2 学科网（北京）股份有限公司 $