Unit 1 Period 1 Welcome to the unit & Reading （课件）英语译林版必修第三册

该高中英语课件围绕“自然平衡”主题，以亚马逊雨林为核心，通过歌曲导入、Free Talk讨论环境问题，结合视频观看雨林概况，构建“环境问题认知—亚马逊生态特征—保护行动”的学习脉络，借助段落大意归纳、思维导图梳理层次等任务搭建学习支架。 其特色在于融合语言能力与思维品质培养，如用思维导图分析雨林层次、食物链任务训练逻辑思维，Critical thinking环节通过保护行动列表提升问题解决能力，引用恩格斯名言渗透文化意识。对学生而言，能提升语言运用与环保责任感，对教师提供系统任务与语言支架，助力高效教学。

Unit 1 Nature in the balance Welcome to the unit & Reading (I) 高中英语译林2020版 必修三 Contents 1. Lead in 2. Pre-reading 3. While-reading 4. Post-reading Output 5. Critical thinking 6. Homework Lead-in What is the message of the song? What can we do to protect the environment? Free Talk Humans have done much harm to the Earth, and we have to take action to change this situation. Reduce paper usage and limit the consumption of plastic bottles and bags. Lower electricity consumption through rational and efficient use. Increase afforestation efforts by planting more trees. Ban the dumping of waste into water bodies to protect water quality. How do you understand “harm” and “alarm” ? “Harm” means something bad we have done to the earth, including polluting soils and seas, cutting down too many trees, etc. “Alarm” means the signal that warns us of the dangers of environmental damage, which urges us to find a solution. Free Talk Let us not, however, flatter ourselves overmuch on account of our human victories over nature. For each such victory nature takes its revenge on us. —Fredrich Engels 但是我们不要过分陶醉于人类对自然界的胜利。对于每一次这样的胜利，自然都会对我们进行报复。 ——弗里德里希·恩格斯 Pre-reading The world we live in is full of natural wonders. Watch a video of the Amazon rainforest, which is home to a wide range of wildlife. The Amazon Rainforest spans an astonishing billion-plus acres, spreading across Brazil, Venezuela, Colombia, and the eastern Andean regions of Ecuador and Peru. If granted country status, it would claim the ninth spot among the world’s largest nations. Known worldwide as the “Lungs of Our Planet”, the Amazon performs an irreplaceable environmental role: it tirelessly transforms carbon dioxide into oxygen. In fact, it generates more than 20 percent of all the oxygen the world breathes. Do you know Amazon Rainforest? While-reading Para. 1: Introduction to the Amazon rainforest Para. 2: Basic information about the rainforest Para. 3: ___________________________________________ Para. 4: ___________________________________________ Para. 5: ___________________________________________ Read the documentary script and write the main idea of each paragraph. Plant biodiversity; levels of the rainforest The rainforest’s value to the human race; threats to the rainforest Animal biodiversity; food chain Task 1 Read the article again and fill in the blanks with the figures. 8 6 million 6,400 40,000 1,300 400 20% 17% Task 2 Read Para. 3 and complete the mind map about different levels of the rainforest. a system of roots the mass of leaf litter shorter plants with large leaves towering ancient hardwoods the tops of the tallest trees The forest’s different levels support an unbelievable variety of wildlife. Task 3 Read Para. 4 again and finish the food chain. 01 02 03 04 05 1. ___________ 2. ___________ 3. ___________ 4. ___________ 5. ___________ Jaguars frogs and other species insects leaves and fruit micro-organisms Task 4 Choose the best answers. 1. According to the text, which of the following statements is true? A. The Amazon rainforest plays a significant role in maintaining the balance of protecting the animals’ ecosystem. B. The Amazon rainforest crosses into eight countries, including Brazil and Peru, on the North American continent. C. The Amazon rainforest covers an area of around 6 million square kilometres, which is more than half the size of China. D. The Amazon rainforest, from which the river gets its name, is about 6, 400 kilometres in length. 2. Why has 17 per cent of the rainforest disappeared over the past 50 years? A. The balance of protecting the animals’ ecosystem disappeared. B. Animals were hunted and plants were damaged. C. This forest’s food chain was damaged. D. The impact of human activities continues to grow. Task 5 As the largest rainforest in the world, it plays a __________ role in maintaining the fine balance of the Earth's ecosystem. significant Summary Basic information • It crosses into _______________ and one overseas region of France. • It covers around _________ square kilometres. • It gets its name from the Amazon River, which is about _______ in length. • It has the richest ____________ on the Earth. Value and threats It fixes carbon and produces over _____of all the Earth’s oxygen. * It is a treasure house of species that can be used for food or medicine. About ______ of the rainforest has lost over the past 50 years due to human activities. eight countries 6 million 6,400 km biodiversity 20% 17% Task 6 Post-reading Output The Amazon rainforest is home to a great (1)_________of plant life; however, its soil is surprisingly poor in nutrients. In fact, the soil in the region cannot support (2)____________ for more than a few years. If a scientist is shown a report listing the nutrients of that soil, he or she will probably think that only desert plants can (3)____________in it! Then why is the soil so poor in nutrients? For one thing, the rainy season has a(n) (4)___________on the soil. In the rainy season, the water level can rise to more than 12 metres. The passage below is from a website about the Amazon rainforest. Complete the passage with the correct forms of the words and phrases in the box below. agriculture impact thus due to variety survive beneath break down variety B1 agriculture survive impact When the water goes away, it takes away the nutrients in the soil. For another thing, (5)___________the Amazon's hot climate, it is difficult for the soil to build up enough nutrients. Dead plants and animals (6)_________________more quickly. The nutrients are soon taken in by the roots of the plants deep (7)_________the ground. As a result, most of the forest's nutrients are locked up in the plants themselves, (8)_________ allowing them to grow at an unbelievable speed. due to are broken down beneath thus agriculture impact thus due to variety survive beneath break down The documentary script uses some words with negative prefixes. Note the following prefixes and think of more words formed with them. Then fill in the table below with as many words as you can. B2 Prefixes Words un- unbelievable dis- disappear in-/im-/il-/ir- irreplaceable non- non-smoking unusual unlimited disabled disagree incorrect impolite illegal non-stop non-profit unknown disadvantage irregular non-existent unkind dishonest Critical thinking Discussion: what can people do to protect Amazon Rainforest? Action List 1. Reduce your carbon footprint (walk, cycle, save electricity) 2. Avoid single-use plastics (bottles, bags, straws) 3. Buy FSC/Fair Trade-certified coffee, chocolate, beef & timber 4. Support zero-deforestation brands 5. Share Amazon facts & threats on social media 6. Urge leaders to pass stricter anti-deforestation laws 7. Donate to trusted groups (WWF, Rainforest Alliance) 8. Choose responsible eco-tourism in the Amazon 9. Volunteer for reforestation or anti-poaching projects 10. Support indigenous communities’ land rights If we destroy the Amazon rainforest, the consequences would be… What can we do to help maintain a delicate ecological balance? Reduce, reuse, and recycle. Follow the "3Rs" to conserve natural resources and landfill space. Plant a tree. Trees provide food and oxygen. They help save energy, clean the air, and help combat climate change. Adopt green transportation, eg. bike more, drive less. Shop wisely. Buy less plastic and bring a reusable shopping bag. Use long-lasting light bulbs. Energy efficient light bulbs reduce greenhouse gas emissions. Also flip the light switch off when you leave the room. Nature, to be commanded, must be obeyed. —Francis Bacon 欲驾驭自然必先顺之。——弗朗西斯.培根 We won't have a society if we destroy the environment. Margaret Mead 如果我们毁坏了环境，社会也就不复存在。—玛格丽特.米德 Homework Reread the content of the article and sort out the key expressions. Complete the exercises in the workbook. Lead-in Assessment Learning Objectives Score(1-5) 1.After learning, I am able to know and understand the structure of speech. 2.After learning, I am able to master reading strategies, such as skimming for topic sentences and summarize the outline of the speech. 3.After learning, I am able to use the words and phrases from the text correctly. 5-完全能；4-基本能；3-不确定；2不太能；1-完全不能 Thank you for your listening！ Unit 1 Nature in the balance Reading (II) Language points 高中英语译林2020版 必修三 ________ the largest rainforest in the world, it plays ________ significant role in maintaining the fine balance of the _________(Earth) ecosystem. The Amazon River, from ________ the rainforest gets its name, is close to 6400 kilometres ______ length. One in ten ________(know) species in the world can be found here. These water lilies are big enough ________(lie) down on. The forest’s different levels support an ____________(believe) variety of wildlife. 6. Then there are the ________(tower) ancient hardwoods. As Earth’s which known Text Review unbelievable to lie a in towering 7. Each level of the forest forms its own little world, home _______ different kinds of living things. 8. They feed _____ at least 87 species, ________(include) frogs. 9.Yet there is one major danger to these __________(replace) plants and animals: us. 10. Over the past 50 years, about 17 percent of the rainforest _______________(disappear) due to human activities. 11. As a result, most of the forest’s nutrients are locked up in the plants themselves, thus _________(allow) them to grow _______an unbelievable speed. on to including irreplaceable has disappeared allowing at 1.harm n.& vt．伤害→______ adj．有害的→______ adj．无害的 2.long adj．长的→________ n．长，长度；→ ________ v. (使)变长 3. variety n．不同种类；多样性；变体→________ v．变化；改变；使多样化→_______ adj.各种不同的，各种各样的 4.appear v. → (反)_________ vi．不复存在；消失；→_________ n消失 5.extinct adj．灭绝的，绝种的；消亡的→_________ n．灭绝，绝种 6. apply v．应用；申请→________ n.应用;申请→_______ n申请人;求职者 7.organize vt.组织→___________ n.组织，团体；条理→_________n．组织者 8.defence n．辩护；防御，防守→________ vt. 保护；防卫；辩护→__________ adj. 防御的 9.economic adj．经济的；可赚钱的→__________ n．经济，经济制度→________adj.节约的；经济的 10. survive vi. 生存,存活 vt. 幸存 → _________ n. 幸存 → ________ n. 幸存者 Key words 1. Welcome to the jungle, a huge sea of green alive with the sounds of animals.(L1-L2) 2. As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth’s ecosystem.(L2-L3) 3. With an area of around 6 million square kilometers, the Amazon rainforest is more than half the size of China.(L5-L7) 4. The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometers in length — roughly 100 kilometres longer than the Yangtze River.(L7-L9) 5. They give this area the richest biodiversity on the Earth: one in ten known species in the world can be found here.（L10-L11） 6. The forest’s different levels support an unbelievable variety of wildlife. (L14-L15) Key sentences 7. Above that is the mass of leaf litter on the dark forest floor.(L16) 8. Each level of the forest forms its own little world, home to different kinds of living things.(L19-L20) 9. While a significant number of jaguars survive here, they are only one element of this forest's food chain.(L23-L24) 10. These frogs, in turn, feed on insects which eat leaves and fruit.(L26-L27) 11. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth.(L27-L29) 12. As the impact of human activities continues to grow and the list of species in danger of extinction becomes longer, we are left with a question: can we afford to damage the “lungs of the planet”?(L35-L38) Key sentences 1. Welcome to the jungle, a huge sea of green alive with the sounds of animals.(L1-L2) 欢迎来到亚马逊森林，这是一片绿色的海洋。 a sea of: a large amount of sth. 大片的，成片的 e.g. He looked down and saw a sea of smiling faces. (be) alive with: be full of or covered with e.g. The pond was alive with frogs. 池塘里都是青蛙。 2. As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth’s ecosystem.(L2-L3) 作为世界上最大的雨林, 它在保护地球生态系统平衡方面扮演了重要的作用。 play a role in doing sth 在……方面扮演了重要的角色 e.g. Hard work plays a significant role in achieving success. Technology plays a key role in promoting social progress. She played an active role in organizing the charity event. fine adj. 表“好的/晴朗的/精致的/罚款的” v.表“罚款” - fine sb for doing sth（因做某事罚款某人） n.表“罚款” 3. With an area of around 6 million square kilometers, the Amazon rainforest is more than half the size of China.(L5-L7) 亚马孙雨林面积约六百万平方千米，是中国国土面积的一半以上。 ......roughly 100 kilometers longer than the Yangtze river. 倍数的表达方法： A be + 倍数+the height/weight/length/size...of B The earth is 49 times the size of the moon.地球的体积是月球的49倍。 This classroom is three times the width of that one. 这间教室是那间教室的三倍宽。 ② A be +倍数+as +adj/adv+as B The table is four times as long as that one . 这张桌子是那张的四倍长。 ③ A be +倍数 adj/adv比较级+than B A比B....几倍 China is 96 times larger than Korea. 中国比韩国大96倍。 4. The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometers in length — roughly 100 kilometres longer than the Yangtze River.(L7-L9) 亚马孙雨林得名于亚马孙河, 亚马孙河长接近6400千米, 比长江还长约100千米。 此句是“介词+关系代词”引导的非限制性定语从句， 先行项和非限制性定语从句之间用逗号隔开。 Prep. + relative pronouns (which/whom/whom) The woman__________ you spoke is a teacher. The city __________ he lives is far away. This is Mr Green, _________ factory my father used to work. to whom in which in whose 5. They give this area the richest biodiversity on the Earth: one in ten known species in the world can be found here.（L10-L11） 这些生态系统给这个地区带来了地球上最丰富的生物多样性：世界上十个已知物种中就有一个可以在这里找到。 biodiversity n. 生物多样性 conserve biodiversity（维护生物多样性） loss of biodiversity（生物多样性丧失） bio- : 生物的；与生物相关的 e.g. biochemist 生(物)化学家 biophysics 生物物理学 bioengineering 生物工程 eg. Human activities are the main cause of biodiversity loss. Wetlands play a crucial role in maintaining regional biodiversity. 6. The forest’s different levels support an unbelievable variety of wildlife.(L14-L15)雨林的不同层次养活的野生动物种类多到难以置信。 variety n. (同一事物的)不同种类, 多种式样 a variety of/varieties of 各种各样的 [U] n.变化; 多样性; 多变性 e.g. We all need variety in our diet. various adj. 各种各样的, 不同的 vary v. 使某事物有变化, 改变某事物；相异, 不同, 有别 vary in ... 在……方面不同 vary with 随着……而变化 vary from … to …/vary between ... and ...由...到...情况不等 【真题链接】 [2023新高考全国II卷］Yellowstone National Park offers a _________ of anger programmes throughout the park, and throughout the year. [2022全国甲卷］Some of these cultural dining etiquette rules may seem random and strange but they are important in __________ countries. variety various 【语境应用】 (1) 这些花的颜色和大小都不相同，但它们都很漂亮。 The flowers _______________________ but all of them are beautiful. (2) 这家宾馆每个房间的费用由20美元到30美元不等。 The charge for a room in this hotel _____________ $20 ____ $30. vary in colour and size  varies between and 7. Above that is the mass of leaf litter on the dark forest floor.(L16) 之上是黑暗森林地面上的大量落叶。 介词短语above that放句首，句子用完全倒装。这样可以保持句子平衡或使上下文衔接紧密。 e.g. By the window sat a young man with a magazine in his hand. mass n. 团, 块, 堆 大量; 许多 (常指混乱的)一群; 一堆 【搭配】 a mass of / masses of 大量，许多 the mass of … ……中的大多数 the masses 群众 eg. The mass of people support the new environmental policy. 大多数人支持这项新的环保政策。 mass adj. 大批的, 广泛的 e.g. mass unemployment 大批失业 mass production 批量生产 8. Each level of the forest forms its own little world, home to different kinds of living things.(L19-L20) 雨林的每一层都形成了自己的小世界，是各种生物的家园。 living adj. 活着的；活的 e.g. the finest living pianist adj. 在使用的; 在实施的 e.g. living languages 现用语言 n. 生计; 谋生; 收入 e.g. What do you do for a living? n. 生活方式 e.g. everyday living 日常生活 alive adj. 活着的 常作表语、后置定语或补语 His grandparents are still alive. （表语） Who is the greatest poet alive? （后置定语） In the end, two brave soldiers caught the enemy general alive.（宾补） 9. While a significant number of jaguars survive here, they are only one element of this forest's food chain.(L23-L24) 尽管相当多的美洲豹在这里生存, 但它们只是这个雨林食物链的一个要素。 survive v. 生存; 存活, 继续存在 e.g. Of the six people injured in the crash, only two survived. 幸存; 幸免于难; 艰难度过 e.g. The company managed to survive the crisis. v. 比……活(或存在)的时间长 e.g. She survived her husband by six years. survival n. 生存; 存活 Plants need water and sunlight for survival. 植物生存需要水和阳光。 In the wild, the survival of the fittest is a basic rule. 在野外，适者生存是基本法则。 10. These frogs, in turn, feed on insects which eat leaves and fruit. (L26-L27) 相应地, 这些青蛙以昆虫为食, 而昆虫则吃树叶和水果。 in turn: 相应地, 转而, 反过来 e.g. Increased production will, in turn, lead to increased profits. e.g. The children called out their names in turn. 依次 by turns 交替; 轮流 (多指两个人/两个行为之间交替进行) in one’s turn 轮到某人；接着 take turns to do sth./ (in) doing sth. 轮流做某事 It’s one’s turn to do sth. 轮到某人做某事 e.g. It will be in Tom’s turn to be on duty tomorrow. We take turns making/to make dinner. It's your turn to clean the blackboard. 【语境应用】完成句子。 1) It’s my turn _________ (deliver) a speech in public. 2) They took care of their sick father ______ turns. 3) Thus they have, ________________ (接着), become the most important animals on the planet. 4) People try to avoid public transportation delays by using their own cars, and this ____________ (反过来) creates more problems. to deliver by in their turn in turn 11. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth.(L27-L29) 当一只美洲豹死亡时,一小群微生物帮助它分解身体,并将营养物质返回土壤。1. break down: 使(分解)为; 使(变化)成 e.g. Sugar and starch are broken down in the stomach. 2.(机器或车辆)故障; 坏掉 e.g. The telephone system has broken down. 3.失败 e.g. Negotiations between the two sides have broken down. 4.被搞垮; 跨掉 e.g. Her health broke down under the pressure of work. 5.破坏, 消除(尤指感情或态度) break down sb.’s shyness 驱除某人的胆怯 练习：辨析词义 The car broke down on the highway，leaving us anxious. We tried to fix it，but our efforts broke down. Frustrated, we called for help. As we waited，some jokes helped break down the tension, and we laughed about our misfortunes. 12. As the impact of human activities continues to grow and the list of species in danger of extinction becomes longer, we are left with a question: can we afford to damage the “lungs of the planet”?(L35-L38) 随着人类活动的影响不断增加， 濒危物种的名单越来越长， 这留给我们一个问题：我们能承担得起损害“地球之肺”的后果吗？ 【句子结构】as引导时间状语从句。从句中and连接两个并列句。 impact n. 作用, 影响 have an impact on sb./sth 对……有影响 e.g. the environmental impact of tourism 影响 e.g. The impact of the blow knocked Jack off balance. 撞击, 冲撞 v. 有影响, 有作用;冲击 impact on/upon 对……产生影响 e.g. Her father's death impacted greatly on her childhood years. be home to... (Title) a wide range of (Title) judge from (Title) a huge sea of (L1) (be) alive with (L1) play a ... role in (L2) in length/width (L8) be made up of (L17) living things (L20) a ... number of (L23) 是…的家园 各种各样的 从…判断 大量的,大片的 充满;到处都是 起到…作用 长度/宽度是… 有…组成 生物 许多，大量 Translate the following phrases into Chinese. 11.feed on (L24) 12.in turn (L26) 13.an army of (L27) 14.break down (L28) 15.breathe life into (L30) 16.be used for (L33) 17.due to (L35) 18.in danger of extinction(L36) 19.be left with (L37) 20.afford to do (L37) 以…为食 相应的；转而 一群；一批 使分解(为…) 给…注入活力 被用来… 因为；由于 有灭绝的危险 被留下… 负担得起做… 1. Each level of the forest forms its own little world, home to different kinds of living things. 雨林的每一层都形成了自己的小世界，成为各种生物的家园。 2. While a significant number of jaguars survive here, they are only one element of this forest’s food chain. 尽管相当多的美洲豹在这里生存，但它们只是这个雨林食物链的一个要素。 3. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth. 美洲豹死后，一小支微生物军队会助力其尸体的分解，让营养成分重回土壤之中。 4. As the impact of human activities continues to grow and the list of species in danger of extinction becomes longer, we are left with a question: can we afford to damage “the lungs of the planet”? 随着人类活动的影响不断增加，濒危物种的名单越来越长，这就留给我们一个问题：我们能承担起损害“地球之肺”的后果吗？ Translate the following sentences into Chinese. Thank you! null 2020-06-28T17:56:06+08:00 323837.66 Lavf58.20.100 null 2021 252072.3 Lavf58.29.100 $