Unit 4 The Wonders of Nature Section A(1a-2d)-初中英语人教版（2024）八年级下册课件

Unit 4The Wonders of NatureSection A What is amazing about nature?1a-2dPART. 01Learning Objectives教学目标积累世界地理与深海探索相关词汇，掌握最高级/数据描述的句式，能听懂并提取地理与深海信息，完成对话交流与信息填空。了解中国深海探测成就（如“奋斗者”号），感受人类探索自然的跨文化共识，增强对地理与海洋文化的理解与民族自豪感。掌握听力信息提取、图表数据阅读的策略，提升自主获取地理与海洋知识的能力；通过小组探究，提高合作学习与知识分享的能力。通过对比地理数据与深海深度，提升数字逻辑与空间认知能力；在探究深海知识中，培养科学探究与问题分析的思辨能力。笔顺掌握地理与深海主题词汇，熟练运用最高级和数据描述句式。能从听力和图表中提取关键数据与信息，完成对话交流与填空任务。在对话中准确、流畅地描述地理数据与深海特征，避免数字表达错误。结合科学知识，用英语清晰阐述深海探索的意义与保护意识。0102The Wonders of NatureIn this unit, you willtalk about geography facts about natural wonders.compare facts about famous places.share geography facts using large numbers.explore how and why people connect with nature.The Wonders of Nature How do we connect with nature?PART. 02Lead-in1. Do you know the name of the waterfall inthe photo?Yes, it’s Victoria Falls.2. What do you think is special about it?It’s one of the largest waterfalls in the world, with a wide curtain of water.3. What other natural wonders do you know?The Grand Canyon, the Huangguoshu Waterfall, Mount Qomolangma and the Amazon Rainforest.This is Victoria Falls.What other natural wonders do you know?PART. 031a — 1dPre-listening1a Match the places with the pictures._____ Nile River_____ Angel Falls_____ Mount Qomolangma_____ Dead Sea_____ Sahara Desert     _____ Mariana TrenchFACEDBPre-listening1. Nile River（尼罗河）位置：非洲东北部，流经坦桑尼亚、乌干达、苏丹、埃及等 11 国，注入地中海。关键数据：全长约 6,650 千米，是世界最长河流；由白尼罗河、青尼罗河汇合而成。特点与意义：孕育了古埃及文明，至今仍是埃及等国农业、生活用水的核心水源；沿岸有众多历史遗迹。Pre-listening2. Angel Falls（安赫尔瀑布）位置：委内瑞拉东南部的圭亚那高原，藏于雨林深处。关键数据：总落差 979 米，自由跌落高度达 807 米，是世界最高的瀑布。特点：水流从平顶高原的陡崖直坠，雨季时水量充沛，水雾升腾。Pre-listening3. Mount Qomolangma（珠穆朗玛峰）位置：中国与尼泊尔边界，喜马拉雅山脉主峰。关键数据：海拔 8,848.86 米，为世界最高峰，且因板块挤压仍在缓慢升高。特点：高海拔气候极端，终年积雪；是全球登山爱好者的终极挑战地；生态环境独特，有多种高原珍稀物种。Pre-listening4. Dead Sea（死海）位置：约旦、以色列、巴勒斯坦交界处，内陆盐湖。关键数据：湖面海拔-416米，是地球陆地表面最低点；湖水盐度极高（约 34%，是普通海水的 8-9 倍）。特点：高盐度让人体可以轻松漂浮在水面；水中几乎没有生物存活；湖泥和盐水常被用于疗养。Pre-listening5. Sahara Desert（撒哈拉沙漠）位置：非洲北部关键数据：面积约 900万平方千米，是世界最大的沙漠。特点：以广阔的沙丘、砾漠为主；昼夜温差极大；虽干旱但有绿洲和游牧民族；近年来沙漠边缘有荒漠化扩张的问题。Pre-listening6. Mariana Trench（马里亚纳海沟）位置：西太平洋，靠近马里亚纳群岛关键数据：最深处（斐查兹海渊）约 11,000 米，是地球海洋的最深处。特点：这里水压极高、完全黑暗、温度接近冰点；仍发现了多种独特的深海生物；同时也检测到了人类丢弃的塑料垃圾。While-listening1b Listen to the game show. Complete the descriptions of the places.highest mountain biggest desertlowest placedeepest pointWhile-listeningHow to read these numbers?4168,848.8611,0009,000,000416 → four hundred and sixteen8,848.86 → eight thousand eight hundred and forty-eight point eight six11,000 → eleven thousand9,000,000 → nine million小数点：point小数点后：一个一个读三位数：hundred and …四位数、五位数：… thousand七位数：… millionWhile-listening1c Listen again. Complete the measurements in 1b with the numbers below.4168,848.8611,0009,000,0008,848.869,000,00041611,000 平方千米海平面While-listeningListen again and fill in the blanks.Host: Welcome to our game show! Today, it’s all about geography. Answer ____________________! Question one: What is the highest mountain in the world?Fu Xing: It's Mount Qomolangma!Host: Correct! How high is it?Lin Hongyu: I know this — it's 8,848.43 metres high.Host: No, sorry. Fu Xing?Fu Xing: Is it 8,848.86 metres?Host: Yes! But some scientists say Qomolangma is still _____________! Now, name the biggest desert in the world.Fu Xing: The Taklimakan Desert?as quickly as you cangrowing tallerWhile-listeningListen again and fill in the blanks.Host: Wrong! Ella?Ella: The Sahara Desert.Host: Right! Now, how big is it?Ella: It's about 9,000,000 square kilometres.Host: That's right! What's the _________ place on earth?Lin Hongyu: It's the Dead Sea!Host: ___________! Its surface is 416 metres ______________. Now where's the deepest point in the ocean?Fu Xing: It's in the Mariana Trench.Host: That's correct! How deep is it?Fu Xing: It's about 11,000 metres deep.Host: Correct!lowestWell donebelow sea levelPost-listening1d Talk about the places you have learnt about.A: What’s the lowest place on earth?B: It’s ...A: How low is it?B: Its surface is ... metres below sea level.A: Now, what’s ...Post-listening1d Talk about the places you have learnt about.A: What’s the lowest place on earth?B: It’s the Dead Sea.A: How low is it?B: Its surface is 416 metres below sea level.A: Now, what’s the highest mountain in the world?B: It’s Mount Qomolangma.A: How high is it?B: It’s 8,848.86 metres high. SamplePART. 042a — 2dPre-listeningLook at this chart and answer the questions.1. What can you see?mountains, ships, numbers2. How deep is the deepest point?10,909 metres3. Compare it with Mount Qomolangma. Is the ocean deeper than the mountain is high?It is deeper than Mount Qomolangma is tall.Pre-listening2a What do you know about the deep sea? Complete the sentences with the information from the picture.1. Fendouzhe reached ______________. 2. The deep sea begins at _____________.3. The Titanic rests at ____________.4. A whale can dive to _______________.10,909 metres200 metres3,800 metresover 2,000 metresWhile-listening2b A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss.where the deep sea beginswhy people are researching the deep seawhich Chinese submersible dived deeper in the water than many otherswhat deep-sea animals are likehow everyone should protect the deep seaWhile-listening2c Listen again. Complete the sentences with the facts from the conversation.1. People still don’t know much about the ___________.2. In ________, China’s Fendouzhe dived into the deep sea and filmed it.3. Some animals have unusual abilities. Some are ________ but can “see”. Some can even create their own ________.4. There is rubbish even at __________ metres deep.2020ocean floor blind light 11,000Post-listeningListen again and role play with your partner.Ms Gao: Thank you for the wonderful talk, Mr Jones. Now, does anyone have any questions?Emma: I do! Why are so many countries researching the deep sea?Mr Jones: Well, curiosity is one reason. We don’t know enough about the ocean floor.Fu Xing: I remember that in 2020, China’s Fendouzhe dived deeper into the Mariana Trench than many other submersibles in the world and filmed it. But I didn’t see any deep-sea animals. What are they like?Mr Jones: Well, many deep-sea animals are large and unusual. Some animals are blind, but they can “see” as well as others. Some even create their own light!Peter: Cool! Are there any other surprising facts about the deep sea?Mr Jones: Did you know that there’s rubbish even at 11,000 metres deep? That shocked many people.Ms Gao: That’s terrible! We should do something about it.Mr Jones: You’re right!海底潜水器自己发光对此采取措施Post-listening2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner.What is the largest shark in the deep sea?What is the bottom of the deep sea like?Why is it important to research the deep sea?Post-listening2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner.A: What is the largest shark in the deep sea?B: I think it’s the whale shark.A: Do you know how large it is?B: It can grow up to about 10 to 20 metres in length.A: What is the bottom of the deep sea like?B: It is dark, freezing, and has high pressure. There are also many unique creatures.A: Why is it important to research the deep sea?B: Because the deep sea has unique species for research, holds important resources, and can help control our climate.SamplePART. 05Language Points1. The Wonders of Nature 自然奇观wonder → wonderful adj. 精彩的；绝妙的We had a wonderful time in the park last weekend. 上周末我们在公园度过了一段精彩的时光。① n. 奇观；奇迹The Great Wall is one of the greatest wonders of the world. 长城是世界上最伟大的奇迹之一。② n.［U］惊叹，惊奇The child watched the fireworks with wonder. 孩子满怀惊奇地看着烟花。③ v. 琢磨；想知道I wonder if you can help me with this problem. 我想知道你是否能帮我解决这个问题。④ v. 感到诧异I wonder that he can speak four foreign languages. 我感到诧异，他竟然会说四门外语。2. 416 metres below sea level 低于海平面辨析below与underbelow：表示在某物的下方，但不一定是在正下方。反义词：aboveunder：表示在某物的正下方。反义词：overIf you look out of the window, you can see a small river below the hill.如果你向窗外看，你能看见小山下面有一条小河。There is a cute black cat sleeping under the table. 桌子正下方有一只可爱的黑猫在睡觉。sea level 海平面Many places are becoming higher above sea level. 许多地方正变得高于海平面。a high/low level 高/低水平He tried his best to improve from a low level to a high level. 他努力从低水平提升到高水平。3. A whale can dive to over 2,000 metres. 鲸鱼可以下潜至2000多米。dive down 潜入；下潜；俯冲When the rain came, the birds quickly dived down to hide in the trees.下雨时，鸟儿迅速俯冲下来躲进树林里。dive into 跳入；跳进He took off his coat and dived into the cold water to save the boy.他脱掉外套，跳进冰冷的水里救那个男孩。4. Some animals have unusual abilities. 有些动物拥有非凡的能力。unusual adj. 特别的；不寻常的 → usual adj. 通常的 → usually adv. 通常地；平常地 → unusually adv. 不寻常地We will meet at the usual place after school. Today, there is something unusual — it is unusually cold.PART. 06ExercisesExercise—单词拼写1. In his works, he paid special attention to the “little man” at the ________ (底部) of society in the UK, which deeply mirrored the social reality at that time.2. As far as we know, the Sahara Desert is the biggest _________ (沙漠) in the world.3. The small boat moves slowly across the peaceful ________ (表面) of the lake.4. Children ________ (低于) 1.1 metres high can visit the zoo for free.5. Zhang Guimei is an ________ (不寻常的) teacher. She set up the first free girls’ high school in 2008.6. After reading the book, he _________ (琢磨) why people built those small houses there.desertsurfacebelowbottomunusualwonderedExercise—用所给词的适当形式填空1. We want to visit the Great Wall, which is considered one of the seven _________ (wonder) in the world.2. Many deep-sea animals have ________ (usual) abilities to survive in the terrible deep-sea conditions.3. With a ________ (deep) of 64 metres, Lake Erie is the shallowest of the Great Lakes.4. The ________ (dive) found some rare shells when they went underwater yesterday.5. The ______________ (measure) of this room are 5 meters in length, 4 meters in width and 3 meters in height.wondersunusualdepthdiversmeasurementsPART. 07SummaryKey words: wonder, desert, below, level, surface, depth, unusual, bottomExpressions: A: What’s the lowest place on earth? B: It’s ... A: How low is it? B: Its surface is ... metres below sea level. A: Now, what’s ...Functions: 积累世界地理与深海探索相关词汇； 掌握最高级/数据描述的句式； 能听懂并提取地理与深海信息。Sentences: A whale can dive to over 2,000 metres. Some animals have unusual abilities.PART. 08HomeworkSummarize basic words and sentences.Prepare for the next lesson.HomeworkTHANKSSee you next class!