Unit 6 Earth first Understanding ideas 课件-2025-2026学年高一英语外研版必修第二册

该高中英语课件围绕“鲨鱼：危险还是濒危”主题，通过电影海报预测、形容词描述及视频观看导入，以语法点（如see sb. doing sth.）、态度变化图表为支架，引导学生从认知鲨鱼形象过渡到理解其濒危现状及保护意义。 其亮点在于融合语言能力与思维品质培养，通过电影场景分析、鱼鳍采割案例讨论，引导学生批判性看待人类对鲨鱼的态度转变，结合环保倡议写作任务增强文化意识。采用任务型教学与结构梳理（问题-分析-结论），助力学生提升语言运用能力与环保责任感，为教师提供系统教学资源与活动设计参考。

Book 2 Unit 6 Understanding ideas SHARKS: DANGEROUS OR ENDANGERED? What is your feeling when talking about sharks? What’s your impression of sharks? (use adjectives to describe it) endangered dangerous terrifying powerful sharks man-eating huge interesting intelligent adj.聪明的 cute adj.可怕的 3 Pre-reading Watch and think What else about sharks? hunted by humans What is finning? finning: a type of fishing where sharks are caught and their fins cut off. Prediction Activity 1 Prediction: Will sharks be dangerous or endangered? What is your opinion? Why? dangerous endangered fin 鱼鳍 大白鲨 disappear surface Look at the pictures and the title. Activity 2 Skimming (略读，找主旨) 略读，顾名思义，就是粗略地阅读。略读的目的不在于精确地理解文章，而是为了了解大致内容，比如文章的主旨大意，传达的主要信息或作者的基本观点。当我们在有限的时间内要读完大量的文字时，通常采用略读的方式。一般来说，略读的速度比普通阅读速度快3到4倍。高考阅读文章讲述主要观点之后通常会有for example来佐证，如果看懂了主要观点，那么对示例所用的时间和精力就不需要太多了。 Ⅰ. Fast reading（速读） The passage is mainly about people’ changing views on _________, explain people’s _______________ of sharks and __________ awareness of shark protection. sharks misunderstanding raise Para.1　 A. Benchley realized his mistakes and began to fight to protect sharks. Para.2 B. Introduce the topic by describing the opening scene of the film Jaws. Para.3　 C. People have always been scared of sharks, but Jaws made things worse. Para.4　 D. More people start to protect sharks. Para.5　 E. The number of sharks around America fell quickly due to finning. 2. Please match the main idea with each paragraph. 3. Choose the author’s purpose in writing it. (P64 3) 1) To criticise Peter Benchley’s misleading description of sharks in his book and advocate the protection of sharks. 2) To explain people’s misunderstanding of sharks and raise awareness of shark protection. 3) To inform people about sharks and recommend the film and the book to them. /ˈædvəkeɪt /提倡；主张 Activity 3 Scanning （扫读，带着问题找答案） 扫读/寻读 （Scanning） 又称查读。寻读是一种从大量的资料中迅速查找某一项具体事实或某一项特定信息，如人物、事件、时间、地点、数字等，而对其他无关部分略去不读的快速阅读方法。 The first paragraph 1We see a woman swimming at night in a dark sea. Suddenly, she is pulled underwater. She surfaces, cries in fear, then disappears forever. This is the opening scene from the 1975 film Jaws, showing a shark attack. It tells the story of a great white shark that attacks and kills swimmers. see sb. doing sth. 看到某人正在做某事 我们看到一个女人夜晚在漆黑的海水里游泳。突然，她被什么东西拖到水下。她挣扎着浮出水面，发出惊恐的尖叫，然后就彻底消失了。这是1975年上映的电影《大白鲨》的开场画面，呈现了鲨鱼攻击人类的画面。电影讲述了一条大白鲨袭击并杀死游泳者的故事。 浮出水面 定语从句，修饰a great white shark 现在分词作状语，补充说明 1 Jaws was a great success, attracting huge audiences and winning many awards. It strengthened people’s long­-held idea of the great white shark as a dangerous animal. n.一件成功的事 v.吸引 电影大获成功，吸引了大量观众并赢得了众多奖项。这部电影也加深了人们对大白鲨的固有印象：这是一种危险的动物。 增强 长期持有的 1. Which of the following statements about the film Jaws is WRONG? A. A woman died as a result of a shark's attack. B. It was popular with huge audiences. C. It changed people's attitude to sharks as a dangerous animal. D. It won a great reputation(n.名誉;名声) in the field of film. Complete the chart showing how attitudes towards sharks have changed with words and expressions from the text. as dangerous animals Q. Why is the film Jaws mentioned in the beginnging? It strengthened people’s long-held idea of the great white shark as a dangerous animal. (To introduce the topic) 长久以来的 The second paragraph 2People have always been scared of sharks, but Jaws made things worse. It made people frightened of sharks, especially of the great white shark. Many people who saw the film started to believe that sharks were bad animals that ate humans. be scared of sth. 害怕某物 adj.害怕的 人类本就一直害怕鲨鱼，而电影《大白鲨》使这种情况变得更糟。让人们对鲨鱼，特别是大白鲨，心生恐惧。许多看过这部电影的人开始相信，鲨鱼是吃人的有害动物。 be frightened of sth. 害怕某物/某事 定语从句 宾语从句 定语从句，修饰sharks make＋宾语＋介词短语做宾补 2 Some people stopped swimming in the sea, afraid of the horrible creature from the film. Other people started fishing for sharks, killing as many as they could. At that time, nobody cared (if sharks were killed, or how many were killed). People just wanted them killed. stop doing sth. 停止做某事 (be) afraid of 害怕某事 有些人因为害怕遇到电影里描述的这种可怕生物再也不去海里游泳了。而另外一些人则开始无所顾忌地捕杀鲨鱼。当时，没人在意鲨鱼是否杀死，也没人在意杀了多少。人们认为鲨鱼死有余辜。 adj.可怕的 宾语从句 want＋sth＋done 希望某事被完成 现在分词做结果状语 ·People have always been scared of sharks，but Jaws made things worse. (para2) 人们总是害怕鲨鱼，但是《大白鲨》使事情变得更糟。 scare v.使(某人)惊恐，吓唬 scared adj.恐惧的；害怕的 scaring adj.让人害怕的 scary adj.引起恐慌的 (1)scare sb away/off 把某人吓跑/吓退 scare sb into (doing) sth 威胁/恐吓某人(做)某事 (2)be scared of sb/sth 害怕某人/某物 be scared of doing sth 害怕做某事 be scared to do sth 害怕、恐惧做某事 (be) scared to death 吓的要死 ►单句语法填空 ①They scared the little boy ____________ stealing foods in the supermarket. ②The little girl is scared of ____________(go)out alone. ③The shy boy is scared ____________ (ask) for help at school. into going to ask The third paragraph 3After 1975, the number of large sharks around America fell quickly, and soon fell around the world. This was not only due to fear of sharks, but also finning. Finning is a type of fishing (where sharks are caught and their fins cut off). The sharks are thrown back into the sea where they die slowly and painfully. The fins are used in shark fin soup. Finning kills millions of sharks a year. ...的数量 v. catch 数以百万计的 hundreds of 成百的 thousands of 成千的 1975年之后，在美国附近海域里，大型鲨鱼的数量迅速下降，这一趋势很快蔓延到全球。这不仅仅是因为人类对鲨鱼的恐惧，还因为采割鱼鳍。采割鱼鳍是一种捕猎活动，人们捞到鲨鱼后将其鱼鳍割下，鲨鱼被扔回海里中缓慢而痛苦地死去，割下的鱼鳍用来做鱼翅汤。每年有数百万的鲨鱼因此丧命。 一种 切掉 fall-fell-fallen throw-threw-thrown 引导定语从句 引导定语从句 2. What’s the main reason for the number of large sharks fall quickly? A. Because of the climate change. B. Because of people’s killing and finning . C.Because of lacking of enough food. D.Because of the pollution of the ocean. finning How many sharks are killed by finning around the year 1975? A bowl of fin soup= The life of a whole shark Can the shark live long in the sea? Finning kills millions of sharks every year. How did people feel when they killed sharks? Complete the chart showing how attitudes towards sharks have changed with words and expressions from the text. sharks were bad animals that ate humans swimming in the sea fish for sharks fear of sharks and finning Q. What is finning? Finning is a type of fishing where sharks are caught and their fins cut off. ·This was not only due to fear of sharks，but also finning. 这不仅是因为害怕鲨鱼，而且是由于捕鲨割鳍。 due to 因为 表原因的介词短语： because of，on account of，owing to，thanks to，as a result of等。 注意：(1)due to 意为“由于”常作表语，也作后置定语和状语。 (2)thanks to意为 “多亏；由于”，只作状语。 (3)owing to意为“由于” 常作状语。 (4)as a result of意为“由于” 作状语。 ►补全句子 ①The production has been increased by around 30 percent __________________________ (由于新技术). ►同义句转换 ②They have had another good harvest ________________ the heavy snow of last winter. →They have had another good harvest _______________________ the heavy snow of last winter. due to the new technology thanks to due to/because of/owing to ·Finning is a type of fishing where sharks are caught and their fins cut off. 捕鲨割鳍是一种捕鱼方式，在那里鲨鱼被捕获，他们的鳍被切断。 cut off 切断 cut down 削减；删节；砍伐 cut out 切去；省略；停止(做某事) cut up 切碎；剪碎 cut through 穿过；穿透 cut in 插入；插嘴；超车抢道 ►短语填空 ①It was a cold January in 1925 in Nome，Alaska. The town was ______________ from the rest of the world due to heavy snow. ②Every one of us can make a great effort to __________ the use of energy in our country. ③She kept ________________ on our conversation，which made us very angry. ④________________ the carrots before you put them into the pot. ⑤He ________________ the park and got there in time. cut off cut down cutting in Cut up cut through The fourth paragraph 4Finning would have an unexpected effect upon Peter Benchley, the man who wrote the book the film Jaws was based on. In 1980, Benchley was diving when he came across an awful sight. It was an area (where fishermen were finning, and the sea floor was covered with dead sharks). Benchley saw sharks being killed and this caused a deep change in him. 对……有影响 have/make an impact on 鱼鳍采割活动对《大白鲨》电影的原著作者——彼得·本奇利产生了意想不到的影响。1980年，本奇利在潜水时看到了可怕的一幕：渔民们正在这片海域采割鲨鱼的鱼鳍，海底遍布了死去的鲨鱼。本奇利亲眼目睹鲨鱼被杀，这引起了他内心的深刻转变。 海床 偶遇 以......为基础 be covered with 被……覆盖 可怕的 定语从句 定语从句 be doing ＋when 正在做某事时，这时...... He came to see people as a danger to sharks, rather than the other way round. From that day on, he fought to protect sharks. He admitted that his book was wrong about sharks’ behaviour. “Sharks don’t target humans,” he said. Experts have proved (that sharks do not see people as food, and they attack us by mistake). Only around six people are killed by sharks every year. come to do 开始做某事 他意识到人类才是鲨鱼的威胁，而鲨鱼并非人类的敌人。从那天起，他开始为保护鲨鱼而努力。他承认自己书中关于鲨鱼行为的描述是不正确的。“鲨鱼并不以人类为攻击目标。”他说。专家们也已经证明了鲨鱼不会将人类视为食物，它们对人类的攻击都是无意的。每年因鲨鱼攻击致死的人数在六人左右。 把……看作 而不是 反过来 fight to do 争取做某事 无意间；不小心 3.What has changed Peter Benchley's opinion about sharks? A. The horrible sight he caught when he was diving. B. People's fear of the sharks. C. The decline(n.减少) of the sharks. D. Experts' findings on the sharks. ·Finning would have an unexpected effect upon Peter Benchley，the man who wrote the book the film Jaws was based on. 捕鲨割鳍对彼得·本奇利产生了意想不到的影响，电影《大白鲨》就是根据他的书改编的。 have an effect upon对……有影响 take effect 生效，实行 come /go into effect 开始生效，开始实施 put sth into effect 实施，实行 注意：　(1)affect常作及物动词，“影响，感动，感染”。 (2)effect常作名词，“结果，效果，作用，影响”。 ►短语填空 ①Her illness ____________________ her work. ②It won’t be easy to ____________ the changes ________________.(使......生效) ③The new tax rates ________________ from April.(实施；实行) ►同义句转换 ④After a heated discussion at the meeting，a new plan came into being，which would affect greatly the cultural life of the people. →After a heated discussion at the meeting，a new plan came into being，which would ____________________ the cultural life of the people. have a great effect on has had a bad effect on put into effect came into effect ·He admitted that his book was wrong about sharks’ behaviour. 他承认他的书对鲨鱼行为的描写是错误的。 be wrong about在……方面是错的； 误解…… go wrong 犯错，弄错 do wrong to sb对待(某人)不公平；冤枉某人 注意：wrong 是个多义词 (1)adj.错误的；有毛病的；不适当的；不道德的 (2)adv.错误地 (3)n.不义行为；坏事；犯罪；欺骗；错误；不公正 (4)v.冤枉；不公正地对待 ►补全句子 ①We can often _______________(误解)each other，so it is an amazing thing that we understand each other as well as we do! ②Sometimes you may _____________(犯错)，but this is the best way to learn this new language. ③Mary’s friend felt regretted for he ________________(冤枉她). be wrong about go wrong did wrong to her ·“Sharks don’t target humans，” he said. “鲨鱼不以人类为目标，”他说。 target v.把……作为目标 achieve one’s target 达到目标 aim at a\ the target 瞄准目标 hit/set a target 完成/设定指标  注意：target可以用作名词，意为“目标”。 ►单句语法填空/补全句子 ①Google used the data collected from users __________(target)advertising better. ②The woman _____________________(瞄准目标) but hit the wall. to target aimed at the target The fifth paragraph 5Fortunately, not everyone (who watched the film Jaws) became afraid of sharks—some became interested in understanding them. Today, as we learn more about sharks, more people than ever want to protect them from extinction. 灭绝 幸运的是，并非每个看过《大白鲨》这部电影的人都变得害怕鲨鱼——有些人变得更有兴趣去了解它们。如今，随着我们对鲨鱼了解的加深，越来越多的人愿意去保护它们免遭灭绝。 定语从句 4. Intensive reading. Complete the chart showing how attitudes towards sharks have changed with words and expressions from the text. was wrong about shark’s behaviors to protect sharks don’t see people as food understanding them protect them from extinction Q. How did Peter Benchley feel after diving in 1980? He might feel sad for the sharks being killed; he might feel regretful for misunderstanding the great white shark as a dangerous animal in his book; he might also feel angry about finning. 糟糕的 The basic structure of the article. Sharks: Dangerous or Endangered? Para.____ +Para.____ __________ Para.____ + Para. ___ ____________ Para.____ More people want to _________________________. 1 2 3 endangered protect sharks from extinction dangerous 4 5 Problem Analysis Conclusion .Fortunately，not everyone who watched the film Jaws became afraid of sharks—some became interested in understanding them. 幸运的是，并不是所有看过《大白鲨》这部电影的人都害怕鲨鱼——有些人对理解鲨鱼很感兴趣。 【分析】 not everyone是部分否定用法。 【拓展】 部分否定的构成：all、 both、 every、 everybody、everyday、 everyone、 everything、everywhere、always、often等与not搭配使用时，表示部分否定，在这种部分否定结构中，不论not放在这些词前面还是放在这些词后面，它们都表示部分否定。 It’s impossible for all the applicants to get the jobs，because not all of them are fit for them. 并非所有的求职者都能找到工作，因为并非所有人都胜任这些工作。 Both of the windows in my bedroom are not facing to the south. 我卧室里的两扇窗户不都是朝南的。 We all agree that everything in the office isn’t satisfying. 我们都认为办公室里的一切并不都令人满意。 补全句子 ①But _________________(并非这两个城市都) develop slowly over a long period of time. ②__________________ (不是所有的文化) greet each other the same way. ③It is __________________(并不总是容易的) for the public to see what use a new invention can be of to human life. 一句多译 ④事实是并不是每个人重视合理安排时间。 The truth is that ________________ is attaching great importance to time management. →The truth is that ________________ attaching great importance to time management. ⑤并不是两道数学题都很难。 Both of the two maths problems ________________________. →_____________ the two maths problems are very difficult. not both cities Not all cultures not always easy not everyone everyone is not are not very difficult Not both of Activity 4 Post-reading The movie, Jaws filmed in 1975, mainly tells a story that a shark attacks and kills 1._________ (swim). The film was 2.________great success, but it 3._________(strength) people’s long­held idea of the great white shark as a dangerous animal. As a result, people have always been 4.________(scare) of sharks.To make the matter worse, many people wanted them 5._________ (kill). After 1975, the number of large sharks fell quickly due 6. _____fear of sharks and finning. Finning had an unexpected effect on Peter Benchley 7.______ wrote the book the film Jaws was based on. He was aware of his mistake and fought 8.________ (protect) sharks. Experts have also proved that sharks don’t see people as food and they attack us by mistake. 9.__________ (fortunate)，today，with people learning more about sharks, they start to protect them from 10._________ (extinct)． Step 3　Post reading swimmers a strengthened scared killed to who to protect Fortunately extinction People became more frightened of sharks. Many people believed that sharks were bad animals. Some people stopped swimming in the sea. Other people started fishing and killing sharks. Some became interested in understanding them. More people than ever want to protect them from extinction. Post reading. What are people’s attitudes after watching the film Jaws ? We should have a critical thinking. Discussion. How can we protect sharks? Government Experts people say no to shark fin soup raise our awareness of protecting them stop polluting the ocean pass laws to stop illegal killing establish reserves do more researches offer more findings about sharks pangolin 穿山甲 Chinese alligator 扬子鳄 cheetah 猎豹 south China tiger 华南虎 Some look dangerous but in fact are endangered. They are endangered. 图一 被捕杀的穿山甲 图二 被塑料袋勒住脖子的海狮 图三 网中鸟 图四 肚子里装满塑料的海鸟 图五 全身覆盖着厚厚油污的海鸟 图六 被捕杀的犀牛 No trading, no killing. The globe is a big family. Just as President Xi said, We should love animals, as we love ourselves. We should live in harmony with every creature. 假定你是李华，刚刚加入世界自然基金会（WWF），请你以How to protect sharks为题，写一篇倡议书，号召大家保护鲨鱼。内容包括： 1. 鲨鱼现状； 2. 如何保护 ； 3. 发出倡议。 Assignment. Linking words: First of all, Firstly; Besides, also, what’s more, moreover ; Last but not least, finally. _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ _____________________________________________________________________________________ How to protect sharks？ ‌How to Protect Sharks: An Appeal from WWF‌ Dear friends, I am Li Hua, a new member of the World Wide Fund for Nature (WWF). Today, I write to you with an urgent message: sharks are in danger and need our immediate protection (立即行动). ‌Current Situation of Sharks‌ Sharks have thrived（繁衍生息） in the oceans for over 400 million years, yet today, nearly one-third of shark species face extinction. The demand for shark fins, driven by the cruel practice of shark finning, kills over 100 million sharks annually. Additionally, habitat destruction(栖息地破坏), plastic pollution(塑料污染), and climate change(气候变化) further threaten their survival. As apex predators(顶级捕食者), sharks maintain the balance of marine ecosystems(海洋生态系统的平衡). Their disappearance would trigger catastrophic effects on(对...造成灾难性影响) ocean health and human livelihoods(人类生存). ‌How to Protect Sharks‌ We must act decisively. First, support laws banning shark finning and the trade of shark products. Many countries have already implemented such regulations, but global enforcement remains weak. Second, reduce plastic consumption to prevent ocean pollution. Every piece of plastic avoided saves marine life. Third, promote sustainable fishing practices(可持续的捕鱼行为) and advocate for marine protected areas. Finally, spread awareness. Educate friends and family about sharks’ ecological value and reject products that harm them. Let’s act now before silence replaces the ripple of their presence in our oceans. Yours sincerely, Li Hua Lavf58.12.100 Lavf58.29.100 Bilibili VXCode Swarm Transcoder v0.7.49 必修第二册Unit6 Understanding ideas更多听力请关注“高老师学习社”微信公众号 null 218475.55 Lavf58.46.101 Lavf57.71.100 Packed by Bilibili XCoder v2.0.2 $