Unit4 The Wonders of Nature Section A 1a-2d 课件 2025-2026学年人教版八年级英语下册

UNIT 4 The Wonders of Nature Section A 1a-2d 通过本节课的学习，同学们将能: 1.听懂关于自然奇观描述的听力材料并获取关键信息;运用“the + 最高级 + in the world”等结构描述自然奇观的特征;读懂关于自然奇观和深海的图文信息,完成匹配、填空等任务。 2.学会利用听力策略和图文结合的方法获取知识,提升自主学习能力;积极参与小组或同伴间的对话练习,培养自主学习和合作学习的能力。 3.了解世界著名自然奇观的基本地理知识;通过匹配图片与地名等活动,培养观察、分析、归纳信息的能力。 In this unit, you will 1.talk about geography facts about natural wonders. 2.compare facts about famous places. 3.share geography facts using large numbers. 4.explore how and why people connect with nature. 1.Do you know the name of the waterfall in the photo? 2.What do you think is special about it? 3.What other natural wonders do you know? Look and share Yes, I do. The waterfall in the photo is Victoria Falls. I think it's special because it's very big. A large amount of water falls down from a high place, making a great sound and creating a lot of spray. Angel Falls, Mount Qomolangma, Sahara Desert… Highest place on Earth Largest hot desert Deepest part of the ocean What is amazing about nature? Warming-up Qomolangma is 8,848.86 metres high. Its weather is very cold. In January, the temperature can drop to -60 degrees Celsius. Qomolangma is the highest mountain in the world. It stands in the Himalayas, on the border between Nepal and China’s Tibet. The Sahara Desert is the largest hot desert in the world. It is in North Africa. It is very big—about 9 million square kilometres. That’s almost as large as the United States! The Sahara is very dry and hot. In summer, the daytime temperature can be over 50 degrees Celsius. But at night, it gets much cooler. There are few plants here—mostly small bushes and cacti. Some animals, like camels, live here too. Camels can go without water for a long time. The Mariana Trench is the deepest place in the world’s oceans. It lies in the western Pacific Ocean, near the Mariana Islands. Its deepest part is called Challenger Deep. It’s about 11,000 meters deep—that’s so deep you could put Mount Everest (the world’s highest mountain) into it, and there would still be more than 2,000 meters of water above! The Mariana Trench is very dark and cold. No sunlight can reach its bottom. The water pressure there is super high—much higher than on land. But some special animals live here, like small fish that can glow (make their own light) in the dark.  Match the places with the pictures. ______ Nile River ______ Angel Falls ______ Mount Qomolangma ______ Dead Sea ______ Sahara Desert ______ Mariana Trench F A D C B E 1a Listen to the game show.Complete the descriptions of the places. Place Description Measurement Mount Qomolangma the ____________________ in the world ___________ metres high Sahara Desert the _________________ in the world about ___________ square kilometres in size Dead Sea the ______________ on earth ______ metres below sea level Mariana Trench the ________________ in the ocean about _________ metres deep highest mountain biggest desert lowest place deepest point 1b Place Description Measurement Mount Qomolangma the ____________________ in the world ___________ metres high Sahara Desert the _________________ in the world about ___________ square kilometres in size Dead Sea the ______________ on earth ______ metres below sea level Mariana Trench the ________________ in the ocean about _________ metres deep Listen again. Complete the measurements in 1b with the numbers below. 416 8,848.86 11,000 9,000,000 8,848.86  9,000,000 416 11,000 highest mountain biggest desert lowest place deepest point 1c Host: Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world? Fu Xing: It's Mount Qomolangma! Host: Correct! How high is it? Liu 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 growing taller! Now, name the biggest desert in the world. Fu Xing: The Taklimakan Desert? Host: Wrong! Ella? Listen again and circle the answers. Ella: It's 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 lowest place on earth. Liu Hongyu: It's the Dead Sea! Host: Well done! Its surface is 416 metres below sea level. 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 about11,000 metres deep. Host: Correct! What’s the lowest place on earth? It's ... How low is it? Its surface is ... metres below sea level. Talk about the places you have learnt about. Now,what's ... 1d Work in pairs Work in pairs to 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 ... Show Time Assessment（评价量表） 自信大方 声音洪亮 表达流畅 16 What do you know about the deep sea? Complete the sentences with the information from the picture . A B C D 2a A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss. □where the deep sea begins □why people are researching the deep sea □which Chinese submersible dived deeper in the water than many others □what deep-sea animals are like □how everyone should protect the deep sea √ √ √ 2b 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. ocean floor 2020 blind light 11,000 2c 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! Listening materials 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? 2d Work in pairs What is the largest shark in the deep sea? 2.What is the bottom of the deep sea like? 3.Why is it important to research the deep sea? Work in pairs to talk about, ask and answer these questions. The largest shark in the deep sea is the whale shark. It’s dark, cold, has high pressure, and has some special glowing animals. It has unique animals, helps with science research, and has useful resources. 1. wonder的用法 What other natural wonders do you know?你还知道哪些其他的自然奇观？ (1)名词 ①表示 “奇观；奇迹” ，可数名词，复数形式为 wonders 。 常见搭配: one of the wonders of... ······的奇迹之一，natural wonders 自然奇观 ②表示 “惊奇；惊叹” ，不可数名词。 常用短语:in wonder 惊奇地，to one‘s wonder 令某人惊奇的是 例：The Grand Canyon is one of the natural wonders of the world.科罗拉大峡谷是世界自然奇观之一。 She stared at the painting in wonder.她惊奇地盯着那幅画。 To my wonder, he finished the work in such a short time.令我惊奇的是，他在这么短的时间内完成了工作。 Language points (2)动词 ①及物动词，意为 “想知道；琢磨”，后面常接宾语从句。宾语从句要用陈述语序，即 “引导词 + 主语 + 谓语 + 其他” 。也可用于 “wonder + 疑问词 + 动词不定式” 结构，意为 “想知道做某事······” 。 ②表示 “对······感到诧异”，常用 “wonder at sth.” 结构。 例：I wonder where he lives.我想知道他住在哪里。 She wondered how to solve the problem.她想知道如何解决这个问题。 We all wonder at his rapid progress.我们都对他的快速进步感到诧异。 【对点练习】 1.I _________ (wonder) how you finished the difficult task so quickly. 2.To my _________ (wonder), my little brother made a model plane all by himself. 3.长城是世界上最著名的奇观之一。 The Great Wall is one of the most famous _________ in the world. wonders wonder wonder 2. unusual adj.特别的；不寻常的 Some animals have unusual abilities.有些动物拥有特别的能力. unusual意为 “特别的；不寻常的”，由否定前缀 “un- ” 加上形容词 usual（通常的；寻常的）构成。其反义词是 usual。在句中主要作定语，修饰名词，放在名词前面；也可以作表语，放在系动词(如 be, seem, look 等)之后，描述主语的特征。副词形式是 unusually，意为 “不寻常地;特别地”，用来修饰动词、形容词或其他副词 。 例：There is an unusual plant in the garden.花园里有一株特别的植物。 Her behavior seems unusual today.她今天的行为似乎不寻常。 【对点练习】 1.Yesterday we had an _________ (usual) experience—we saw a rainbow at night. 2.The weather here is ____________ (usual) cold in May. 3.她在这次比赛中表现出了不寻常的勇气。 She showed _________ courage in this competition. unusual unusually unusual The ocean is huge—it covers more than 360 million square kilometres of the Earth's area. Many people wonder about the 1._____________ things hidden beneath the ocean surface. There are many amazing places 2._____________ sea level in the ocean. Some parts have great 3._____________, and the water there is very dark and cold. To learn about these places, scientists use good measurement tools to get exact 4._____________ about the ocean. Exercises bottom deep number usual below dive unusual 一、用方框中所给词的适当形式填空 below depth numbers bottom deep number usual below dive Then, they take a special machine called a submersible to go down into the deep sea. Sometimes, brave scientists also 5._____________ into the water to see the beauty of the ocean with their own eyes. When they reach the 6._____________ of the ocean, they find many surprises. These places are even remoter than any desert on land. The ocean is like a big, mysterious world. It always gives us new things to learn and explore. dive bottom 基础作业：抄写重点词汇3遍。 提升作业：写5句话描述自己最喜欢的自然奇观（需用最高级和具体数据）。 拓展作业：查找一个“中国自然奇观”（如黄山），下节课分享。 Thanks null 120323.93 null 110605.43 null 69589.18 eng - 由“英语听力制作专家 7.1”生成 $