Unit 6 Earth First Starting out & Understanding ideas 课件-2025-2026学年高中外研版英语必修第二册

该高中英语课件围绕“Earth First”主题，涵盖环境保护与生物保护核心知识。课堂导入通过问题探究、听力填空及卡通分析等活动，引导学生从废物处理、空气污染等普遍环境问题过渡到鲨鱼保护，构建宏观到微观的知识脉络，提供词汇与句型学习支架。 其特色在于融合语言能力（如“cartilage”词汇学习、“see sb. doing sth.”语法练习）、思维品质（通过数据对比纠正鲨鱼认知误区）和文化意识（引用习近平话语强调生态和谐），采用任务型教学，助力学生提升语言能力与环保意识，为教师提供系统教学资源与活动设计。

B2U6 Earth First Starting out What does “Earth First” mean？/Who/What comes second? Can you predict what we will learn in the unit? Activity 1 What alarming facts are mentioned? What does the s want to tell us? answer the questions waste disposal air pollution oil leakage deforestation radioactive water released into the Pacific Ocean What alarming facts are mentioned? deforestation[ˌdiːˌfɒrɪˈsteɪʃn] species’ extinction ocean pollution shortage of fresh water plastic pollution loss of glaciers [ˈɡlæsiə(r)] Listen and complete the missing numbers. _______ square kilometers of forest disappear every year around _______ trees are cut down each day just to make toilet paper each day, around _______ to _______ species of plants and animals become extinct -nearly _______ times the natural rate of extinction over ________ animals are killed by ocean pollution each year _______ people don't have clean drinking water a plastic bottle can take ______ years to break down the ice caps are more than ______ thinner than they were ______ years ago 130,000 25,000 150 200 1,000 1 million 1 billion 450 50% 40 3. Which of the facts in the pictures do you find most alarming? deforestation species’ extinction ocean pollution shortage of fresh water plastic pollution loss of glaciers Activity 2 1. What environmental problem does each cartoon refer to? 2. What are the causes of these problems? 3. What should be done to help solve it? water pollution deforestation air pollution global warming 2. What are the causes of these problems? causes effects water pollution deforestation air pollution global warming Useful expressions: ignore, cause/lead to/result in, people’s awareness of environmental protection, fossil fuel (化石燃料) burning... 3. What should be done to help solve these problems? Use the following expressions to help you: invest, recycle（v.回收利用）, carpooling（v.拼车）, classification of waste, green/clean energy... To solve these problems, we should take some effective measures. For the government, … For the common citizens, … Individual & Household Practice the 3Rs (Reduce, Reuse, Recycle) Conserve Energy Save Water Adopt Sustainable Transportation Plant Trees Industrial & Governmental Transition to Clean Energy Enforce Environmental Laws & Policies Enhance Waste Management B2U6 Earth First Understanding ideas Activity 1 Tick the words that you would use to describe sharks. Add any more you can think of. some facts about sharks Carcharodon carcharias(大白鲨，噬人鲨)； one of the most fierce types Shark’s fins are very expensive and said to be nutritious and beneficial to health. But experts say the effects are largely exaggerated. Dangerous? Endangered? Whether sharks are dangerous or endangered? Let’s see what the passage will tell us. Turn to page 62 and read the passage Understanding ideas Underline the words or sentences that can support your idea. Activity 2 Read for the opinion Skim the passage to find out what most people thought of sharks in the past? Dangerous or endangered? Dangerous!!! Why is the opening scene from the 1975 film Jaws mentioned in the first paragraph? We see a woman swimming at night in a dark sea. Suddenly, she is pulled underwater. She surfaces, cries in fear, (and) then disappears forever. jaw n. 颌；下巴 jaws [pl.] the mouth and teeth of a person/ an animal To introduce the topic; To reinforce the terrifying effect; To create a sense of suspense (悬念); To arouse readers’ curiosity. Underline the words or sentences that can support your opinion. Activity 2 Read for the opinion Skim the passage to find out what the author thinks of sharks? Dangerous or endangered? general situation the main cause---finning Benchley’s reaction facts experts’ finding Endangered!!! Endangered!!! From the last paragraph, we also learn that the author thinks sharks are endangered. But the author expresses his opinion in an objective or subjective way? Objective! But we can still figure out the author’s attitude, which word can give us the hint? What’s the function of numbers listed in paragraph 3 and 4? To emphasize the fact that people is dangerous to sharks rather thatn the other way round with a sharp contrast. To make what the author says more convincing and persuasive. Finning kills millions of sharks a year. Only around six people are killed by sharks every year. P1. ...a woman...disappears forever; ...a dangerous animal... P2. People...scared of sharks...; ...wanted them killed. P3. ...the number fell quickly; Finning kills millions of sharks a year. P4. Finning...upon Peter Benchley...Only around six people are killled by sharks every year. P5. Fortunately...want to protect them... People’s misunderstandings towards sharks The facts that sharks are endangered The urge to protect sharks from extinction Activity 3 Read for the structure. divide the passage into several parts. The basic structure of the article. Sharks: Dangerous of Endangered? Para.____ +Para.____ _____________ Para.____ + Para. ___ _______________ Para.____ More people want to _________________________. 1 2 3 endangered protect sharks from extinction dangerous 4 5 specific general The passage develops from specific to general. Argumentative essay SHARKS: DANGEROUS OR ENDANGERED? Look at the title and think of the contents. Judge what the genre of the passage is. Not only does the author explain some ideas or concepts, but he/she also attempts to change the readers’ ideas or actions. A. Argumentation. B. Exposition. C. Narration. 1.To criticize 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. Activity 4 (p.84 Ex.3) Choose the author’s purpose in writing the passage. long-held idea Images depicted by Jaws ideas misled by Benchley’s book Jaws Activity 5 Read for people’s attitude. (p.85 Ex.4) Read along with the computer and complete the chart showing how attitudes towards sharks have changed. Activity 4 Complete the chart showing how attitudes towards sharks have changed with words and expressions from the passage. as dangerous animals sharks were bad animals that ate humans swimming in the sea fish for sharks fear of sharks and finning was wrong about sharks’ behaviour to protect sharks do not see people as food understanding sharks protect sharks from extinction pangolin[ˈpæŋɡəlɪn] Chinese alligator[ˈælɪɡeɪtə(r)] cheetah[ˈtʃiːtə] south China tiger some other animals looking dangerous but in fact endangered Don’t judge them by their appearance. 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." How should we treat these animals? They are not the danger, but we humans are! Important sentences 1. We see a woman swimming at night in a dark sea. (教材P82) see sb. doing sth. 看到某人正在做某事 (doing, OC) Translate the following sentences: ①I saw him cross the street and enter a bookstore. 我看见他过了马路，走进了一家书店。 ②I saw him crossing the street when the accident happened. 事故发生时，我看见他正在过马路。 ③I saw him taken away by the police. 我看到他被警察带走了。 ④Benchley saw sharks being killed and this caused a deep change in him. 本奇利亲眼目睹鲨鱼正被杀害， 这引起了他内心的深刻转变。 归纳拓展 (1)see sb. doing sth.看到某人正在做某事(表示动作的连续性、进行性); see sb. do sth.看到某人做了某事 (看到了整个过程,表示动作的完整性) (2)see sb./sth. done看到某人/某事被做(sb./sth.和动作之间是被动关系) 类似用法的常见词汇还有: “吾看三室两厅一感觉”(五看三使役二听一感觉)。 “吾看”:notice, see, watch, observe, look at “三室”:have, let, make “二厅”:hear, listen to “一感觉”:feel 当感官动词接不带to的宾语补足语用于被动语态时,宾补变为主补, to要还 原。 I watched him repair the computer. →变为被动句：___________________________________________________ He was watched to repair the computer. 学以致用 1.单句填空 (1) I saw many people (dance) in the square on my way to school this morning. (2) I saw him (tie) to a tree yesterday. (3) Back from his 2-month medical service in Wuhan, Li Gang was happy to see his mother _____________ (take) good care of at home. 2.句型转换 (3)I saw him work in the garden yesterday. →He was seen in the garden yesterday. dancing tied taken to work 2. In 1980,Benchley was diving when he came across an awful sight. (教材P83) be doing...when...某人正在做某事，这时某事（突然）发生 Fill in the blanks according to the context. ①I _____________along the street when I heard my name called. 我正在街上走着，突然听到有人叫我的名字。 ②I ____________________________________________him when his letter arrived. 我正要给他打电话，这时他的信到了。 ③I ________________my car when it began to rain. 我刚刚才洗完车，这时突然下起雨来。 was walking was on the point of telephoning / was about to call had washed 归纳拓展 be doing sth.when (suddenly)... 正在做某事，这时(突然)…… be about to do...when (suddenly)... 正要做……这时…… be on the point of doing...when(suddenly)... 正要做……这时…… had （just） done...when(suddenly)... 刚刚做完……这时…… when为并列连词, 相当于and suddenly 环境问题 指的是; 提到;查阅 把A同B作比较 害怕地 开场 获……奖 害怕;惊恐 捕捞…… 切掉;切断;使隔绝 10. 对…产生…的影响 以…为根据 碰见;偶然遇到 environmental problems / issues refer to compare A with / to B in fear the opening scene win/get/receive/gain an award for sth. be scared / frightened / afraid of fish for cut off 10. have a(n) ... effect / impact / influence upon / on be based on come across=run across Smart Expressions (P81-84) 13. 引起改变 14. 而不是/代替 15. 相反;颠倒 16. 努力做某事 17. 错误地;无意地 18. 保护…不受… (危害) 19. 提高……的意识 20. 告知某人某事 推荐……给某人 把……视为…… 13. cause a change 14. rather than / instead of 15. the other way round / around 16. fight to do sth. 17. by mistake 18. protect ... from sth. 19. raise / increase awareness of 20. inform sb about / of sth. recommend ... to sb consider / regard/ see... as… null 78523.93 ÇúÄ¿ 5 δ֪ÒÕÊõ¼Ò δ֪³ªÆ¬¼¯ (2019/8/23 9:59:37), track 5 δ֪Á÷ÅÉ 218318.8 $