Unit 1 Nature in the balance Reading 课件-2024-2025学年高一下学期英语译林版（2020）必修第三册

Unit 1 Reading The Amazon rainforest: a natural treasure What do you think the script will talk about according to the title and pictures? Predicting Pre-reading 1. What’s the main idea of the text? A. The Amazon rainforest is the largest rainforest in the world. B. The Amazon rainforest gives the richest biodiversity on the Earth. C. The Amazon rainforest is a natural treasure house on the Earth. D. The Amazon rainforest is known as the “lungs of the planet”． √ Step 1　Fast-reading for basic information. While-reading Para 1 Para2 Para3 Para4 Para5 2.Read the documentary script and write the main idea of each paragraph. Introduction to the Amazon rainforest Basic information about the rainforest Plant biodiversity：levels of the rainforest（plants） Animal biodiversity：food chain （birds and animals） The rainforest’s value to the human race; threats to the rainforest Passage Structure Introduction Basic information Plant biodiversity Different levels Animal biodiversity Food chain Importance Danger A. B. C. D. √ Step 2 Structure Fill in the blanks with the figures (part A2). 8 6 million 6,400 40,000 1,300 400 20% 17% 01 02 03 What is the purpose of using so many figures? To provide specific and accurate information To support the statement and make the statement more persuasive and convincing; To make people realize the importance of the rainforest in a direct way Para. 1 Read carefully and try to find the theme of this script. While reading Introduction 1. What’s the function of Paragraph 1? A. To emphasize the importance of the Amazon rainforest. B. To explain why the Amazon rainforest is a natural treasure. C. To state the status of the Amazon rainforest: the largest rainforest. D. To lead into the following paragraphs. Para. 1 Introduction √ 2.Which word can be used to replace the word “significant” in Para.1? A. Light. B. Small. C. Important. D. Middle. √ Welcome to the jungle, a huge sea of green alive with the sounds of animals. This is the Amazon rainforest. As the largest rainforest in the world, it plays a significant role in maintaining the fine balance of the Earth's ecosystem. 一大片绿色的海洋 处处可闻各种动物的声音 在……方面起着重要作用 Analyze the key points of the text Para. 1 维持（ keep ）……的平衡 扩展延申 alive adj. 活着的 一般作后置定语 living adj. 活着的 一般作前置定语 n. 生计，生活方式； live /laiv/ adj. 活着的，现场直播的; lively adj. 活泼的，生动的。 当堂练习 I found the snake _________. Last night there were millions of people watching the Spring Festival Gala _________ on TV. Young students are usually ___________. alive live lively The author writes about the ________ , the ______,the ____ and the ____________ of the Amazon rainforest. location size name biodiversity Para. 2 Basic information 1. Fill in the blanks. 16 The Amazon rainforest crosses into eight countries, including Brazil and Peru, and one overseas region of France, all on the South American continent. With an area of around 6 million square kilometres, the Amazon rainforest is more than half the size of China. The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometres in length—roughly 100 kilometres longer than the Yangtze River. On its journey from the mountains to the ocean, the river supports many different ecosystems. They give this area the richest biodiversity on the Earth: one in ten known species in the world can be found here. 独立主格结构作状语 在长度上 Para. 2 面积为…… 横穿 海外领地 大陆 最丰富的生物多样性 The Amazon River, from which the rainforest gets its name, is close to 6,400 kilometres in length—roughly 100 kilometres longer than the Yangtze River. [句式分析]　此句是_________句，其中from which the rainforest gets its name是“介词＋which”引导的______________从句，修饰先行词____________________。 [自主翻译]　 复合 非限制性定语 The Amazon River 　 亚马孙雨林得名于亚马孙河，亚马孙河长约6 400千米，比长江还长大约100千米。 介+which/whom The woman____ _______ you spoke is a teacher. The city_____ _______he lives is far away. It was a crisis(危机) _____ _______ she didn’t prepare. It's a kind of tree ______ ______ we can get a lot delicious fruit. The man is my English teacher I chatted just now. to whom in which for which from which with whom Read Para. 3 Plant species water lily brazil nut tree brazil nut water lily 1. How does the author develop this paragraph? A. By listing numbers. B. By giving examples. C. By making comparisons. D. Both A & B. √ Para. 3 Plant biodiversity; different levels Of the 390,000 plant species known to us, more than 40,000 can be found in the Amazon. This tall and ancient brazil nut tree produces nuts that we can eat; these water lilies are big enough to lie down on. The forest’s different levels support an unbelievable variety of wildlife. At the bottom, there is a system of roots beneath the ground. Above that is the mass of leaf litter on the dark forest floor. The next level is made up of shorter plants with large leaves. 各种各样的 地点、方位等的介词短语置于句首，全部倒装 Para. 3 躺下 在底部 在地下 由……组成 Then there are the towering ancient hardwoods, and finally the tops of the tallest trees many metres above the ground. Each level of the forest forms its own little world, home to different kinds of living things. 高耸的 阔叶树 Level 1: a system of roots(根系) beneath the ground Level 5: (4) Level 2:(1) Level 3:(2) Level 4:(3) 2. Complete the mind map about different levels of the rainforest. Vertical 纵向的 the mass of leaf litter(落叶层) shorter plants with large leaves (低矮阔叶植物) towering ancient hardwoods the tops(树冠) of the tallest trees 24 1. How does the author develop this paragraph? By giving examples. Para. 4 Animal biodiversity; Food chain More than 1,300 species of birds and over 400 species of mammals hide among the jungle’s plant life. This jaguar is one example. It has a yellowish­-brown coat with black spots. While a significant number of jaguars survive here, they are only one element of this forest’s food chain. They feed on at least 87 species, including frogs. These frogs, in turn, feed on insects which eat leaves and fruit. When a jaguar dies, a tiny army of microorganisms helps break down its body and return the nutrients to the earth. while引导让步状语从句，意为“虽然，尽管” 以……为食 转而 一小群… 使分解(为) Para. 4 营养素 相当多的 微生物 2. Complete the following chart about the food chain in the rainforest. Jaguars At least 87 species, including frogs Leaves and fruit Microorganisms feed on break down feed on feed on get nutrients Insects The forest’s food chain ① ② ③ ⑤ ④ Circular循环的 27 lungs of the planet 1. What is the value of the rainforest to us? fix carbon produce oxygen a treasure house of species Para.5 Value；Threats 2. What rhetorical device is used in this paragraph? A. Metaphor(隐喻)． B. Personification(拟人)． C. Parallelism(排比)． D. Simile(明喻). √ The Amazon rainforest breathes life into the planet by fixing carbon and producing over 20 per cent of all the Earth’s oxygen. Thus, it is often known as the “lungs of the planet”. Moreover, the Amazon rainforest is a treasure house of species that can be used for food or medicine. Yet there is one major danger to these irreplaceable plants and animals: us. by doing 方式状语 定语从句 Para. 5 给……注入活力 无可取代的 用于…… Over the past 50 years, about 17 per cent of the rainforest has disappeared due to human activities such as agriculture and cattle farming. 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 “over/in/during/for the past/last＋时间段”与现在完成时连用 由于 濒临灭绝 承担得起 农业 继续做…… 影响 损害 3．What is the function of the question at the end of the passage? A. To introduce the topic. B. To introduce ways to protect the Amazon rainforest. C. To seek for answers to protect the Amazon rainforest. D. To arouse people’s concern about the Amazon rainforest. √ Basic information location and size Name: getting its name from (1) ________________ richest (2) ____________ Amazon rainforest Animals more than 1,300 species of birds and over 400 species of (5) __________ elements of this forest’s (6) ___________ Plants more than 40,000 (3) ______________ different (4) _____ of the forest Significance fix carbon and producing (7) ________ having species used for (8) __________________ Danger the major danger: (9) _________________ disappearing due to human activities such as (10) ____________ and cattle farming the Amazon river biodiversity plant species levels mammals food chain oxygen food or medicine us/human beings agriculture Step 4 Mind map Let’s watch a short video to feel the value of the Amazon rainforest. 1. What type of writing is the passage? A. Narrative writing.（记叙） B. Exposition. （说明） C. Argumentation. （议论） 说明文特征 Use of literary resources Organization of information Accuracy of language √ 2. What is the purpose of this documentary script? A. To advertise the Amazon rainforest. B. To popularize(科普) the Amazon rainforest. C. To persuade readers to protect wildlife. D. To call for our joint efforts to protect the Amazon rainforest. √ 3. What is the author’s attitude towards the Amazon rainforest? A．Positive. B. Negative. C．Objective. D. Indifferent. √ 5. What skills does this documentary script use to make it clear and understandable? By presenting facts. By listing numbers. By making comparisons. By giving examples. By using metaphors. 1. a sea of 2. be alive with 3. play a significant role/part in 4. maintain the balance of 5. with an area of 6. more than half the size of 7. in length 8. be made up of 9. biodiversity 10. be home to 大量的，大片的 充满，到处都是 在...中扮演重要角色 保持...的平衡 面积为... 超过...面积的一半 在长度上 由...组成 生物多样性 是...的栖息地 11. living things 12. food chain 13. feed on 14. in turn 15. a tiny army of 16. break down 17. breathe life into 18. be known as 19. treasure house 20. due to 21. afford to do sth. 生物 食物链 以...为食 相应地 一小群... 使分解（成） 给...带来起色 被称作，被认为是 宝库，宝地 由于，因为 承担/支付得起做某事 The Amazon rainforest, 1._______ is the largest rainforest in the world, plays a significant role in maintaining the fine balance of the Earth’s ecosystem. The Amazon rainforest crosses into eight countries, 2._________(include) Brazil and Peru, and one overseas region of France. The Amazon River is close to 6,400 kilometres in 3._______(long). Of the 390,000 plant species 4.______(know) to humans, more than 40,000 can be found in the Amazon. The forest’s different levels support 5.____ unbelievable variety of wildlife. Each level of the forest forms its own little which including length known an Activity 2　Summary 41 world, home to different kinds of 6._______(live) things. More than 1,300 species of birds and over 400 species of mammals hide among the jungle’s plant life. The Amazon rainforest breathes life into the planet by fixing carbon and 7.__________(produce) over 20 per cent of all the Earth’s oxygen. Thus, 8.____ is often known as the “lungs of the planet”. However, over the past 50 years, about 17 per cent of the rainforest 9.______________ (disappear) due to human activities. As a result, we have to think about the question whether we can afford 10.___________(damage) the “lungs of the planet”. producing it has disappeared to damage living 42 主题升华 Let’s protect the rainforest, the ecosystem, and the earth! Live in harmony with the nature! variety B1 P5 agriculture survive impact due to are broken down beneath thus B2 Complete partB2 on page 5 Preflxes Words un- unbelievable dis- disappear in-/ im-/ il-/ ir- irreplaceable non- non-smoking Negative prefixes dislike; disabled; disagree incorrect; inconvenient; impossible; illegal; irregular unimportant; unfit; unwell; unfriendly;unclear;uncomfortable nonstop; nonfat; non-profit Thank you! TMPGEnc Video Mastering Works 5 Version. 5.0.6.38 Lavf58.45.100 Codec by Bilibili XCode Worker v4.8.34(fixed_gap:False) $$