Unit 4 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 通过听、说、看等方式,获取并正确认读关于自然奇观的地理类词汇(如waterfall, desert, trench等),感知描述自然景观特征的词汇用法(如level, surface, depth等)(学习理解) 1 通过听力捕捉、对话练习,获取文本中自然奇观的维度、规模等关键信息,归纳并内化用大数描述事物特征、问答自然奇观相关信息的常用表达(如...is the highest in the world, It’s...metres high/deep)(应用实践) 2 通过讨论和合作交流,理解自然奇观的独特价值,能够主动分享自己熟知的自然奇观信息,并认同探索和保护自然的重要性。 (迁移创新) 3 学习目标 Look and share In this unit you will: talk about geography facts about natural wonders 2. compare facts about famous places 3. share geography facts using large numbers, explore how and why people connect with nature 1. Do you know the name of the waterfall瀑布 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. It’s Victoria Falls. 维多利亚瀑布 It is one of the world’s largest waterfalls. It’s about 1800 meters wide and about 108 meters high. The water falls down with great power and forms a beautiful scene. I also know . Lead in 1a Match the places with the pictures. _Nile River _Angel Falls _Mount Qomolangma _Dead sea _Sahara Desert _Mariana Trench A B D E C F F A D C E B How much do you know about these amazing places? Nile River Angle Falls Mount Qomolangma Dead Sea Sahara Desert Mariana Trench C F 1.What’s the topic about the game show? 2.Tick the wonders they mentioned. It’s about geography. √ √ √ √ Listen and answer. 1b Listen to the game show. Complete the descriptions of the places. Place Description Mount Qomolangma the _in the world Sahara Desert the _in the world Dead Sea the _on earth Mariana Trench the _in the ocean 听力技巧:听主旨,抓描述性最高级词汇(highest, largest...) highest mountain biggest desert lowest place deepest point 1c Try to read the following numbers. 416 8,848.86 11,000 9,000,000 How to read the numbers (大数的读法) 1000以上的基数词的表示法:先从右至左数每三位数加一个逗点,把数字分为若干段: 第一个逗点前的数字单位为thousand(千), 第二个逗点前的数字单位为million(百万), 第三个逗点前的数字单位为billion(十亿)。 7 , 106 ,453 ,515 billion 十亿 million 百万 thousand 千 百位和十位中间加and 小数点读作point, 小数点后的数字逐个单独读出。 1c Try to read the following numbers. 416 8,848.86 11,000 9,000,000 416 8,848.86 11,000 9 , 000 , 000 thousand eight thousand eight hundred and forty-eight point eight six eleven thousand thousand million nine million four hundred and sixteen 1c Listen again. Complete the measurements. Place Measurement Mount Qomolangma _metres high Sahara Desert about _square kilometres in size Dead Sea _metres below sea level Mariana Trench about_metres deep 听力技巧:精听,边听边记录关键数据。 8,848.86 9,000,000 416 11,000 Host: Welcome to our game show. Today it is 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 8848.43 meters high. Host: No, sorry. Fu Xing? Fu Xing: Is it it 8848.86 meters? Host: Yes. But some scientists say Qomolangma is still growing taller. Now name the biggest desert in the world. Fu Xing: The Taklimakan Desert. Listening Scripts 在英语中,表示事物的长、宽、高等时,其表达方式为:”基数词+表示度量的名词(meter,kilometer, foot等)+形容词(long,wide, high, tall等)。若基数词大于1,则表示度量的名词应用复数形式 Host: Right! Now. How big is it? Ella: It's about 9000000 square kilometers. 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 meters 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 about 11000 meters deep. Host: Correct! Listening Scripts 1d Pair work. Talk about the places you have learnt about. For example: A: 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. What do you know about the deep sea? Let’s follow Fendouzheto explore. 2a Complete the sentences with the information from the picture. A. Fendouzhe reached . B. The deep sea begins at . C. The Titanic rests at . D. A whale can dive to . D /da v/ v. & n. 潜水 泰坦尼克号 A B C D A C B Listen and tick the topics they discuss. 2b where the deep sea begins why people are researching the deep sea which Chinese vessel dived deeper in the water than many others what deep-sea animals are like how everyone should protect the deep sea /r s t / v. & n. 研究 / vesl/ n. 大船;轮船 Ms Gao: Thank you for the wonderful talk, Mr Jones. Now, does anyone have any questions? Emma: I do! Why are so many countries_the deep sea? Mr Jones: Well,_is one reason. We don't know enough about the _. Fu Xing: I remember that in 2020, China's _ _dived deeper into the Mariana Trench than many other vessels 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_. Some animals are_ , but they can "see" as well as others. Some even create their own _! Peter: Cool! Are there any other surprising facts about the deep sea? Mr Jones: Did you know that there's_even at_metres deep? That shocked many people. Ms Gao: That's terrible! We should do something about it. Mr Jones: You're right! researching curiosity ocean floor Fendouzhe blind light rubbish Listen to the conversation again and fill in the blanks. unusual 11,000 Listen again. Complete the sentences with the facts from the conversation. . 2c 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 2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer with a partner. For example: What is the largest shark in the deep sea? What is the bottom of the deep sea like? What other vessels dived to the bottom of the ocean? Why is the deep sea important to us? / b t m/ n. 底部 2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer with a partner. A: What is the largest shark in the deep sea? B: The largest shark that ever lived was the megalodon. It was about 20 metres long. But it is extinct now. A: What is the largest shark in the deep sea? B: The largest shark alive today is the whale shark. But it doesn't live in the deep sea. In the deep sea, sharks are usually smaller, like the frilled shark. A: What is the bottom of the deep sea like? A: What other vessels dived to the bottom of the ocean? . A: Why is the deep sea important to us? B: It's very dark and cold. The bottom is covered with soft mud. There are mountains, volcanoes, and deep trenches. B: In 1960, the Trieste went to the bottom of the Mariana Trench. In 2012, James Cameron went there alone in the Deepsea Challenger. In 2020, China's Fendouzhe also reached the bottom B: It helps control the Earth's temperature. It is home to many animals we haven't discovered yet. And it gives us food and maybe new medicines. Sum up what you have learned. Natural wonders Mount Qomolangma the highest Sahara Desert the biggest Dead Sea the lowest Mariana Trench the deepest Summary 8,848.86 9,000,000 416 11,000 Language Points 词 讲 练 wonder / w nd (r)/ v. 想知道;感到惊奇 n. 奇迹;奇观 - wonderful adj. 精彩的;绝妙的 - wonderland n. 仙境;奇境 1.We all wonder _ (at/in/for) the beauty of the sunset. 2. We had a _(wonder) time at the beach last weekend. 3. The Grand Canyon(科罗拉多大峡谷) is one of the natural _ (wonder) in the world. Language points (1)想知道,后常接宾语从句、疑问词+不定式结构,相当于want to know。 例:I wonder what he is doing now.我想知道他现在在做什么。 (2)感到惊奇;惊叹,常用搭配wonder at sth 例:We all wonder at his rapid progress in English.我们都对他英语的快速进步感到惊叹。 (3)作名词,意为“奇迹;奇观”,常用搭配 the wonders of...(……的奇迹) 例:The Great Wall is one of the great wonders of the world.长城是世界上伟大的奇迹之一。 wonders at wonderful Language points (the+)最高级(+名词)+in/of 短语, 意为“……中最……的”。 I think spring is the best time of a year. 我认为春天是一年中最好的时节。 Tom works (the) hardest in Class3. 在三班汤姆学习最努力。。 one of the +形容词最高级+可数名词复数+in/of 短语,意为“……中最……的……之一”。 Hangzhou is one of the most beautiful cities in the world. 杭州是世界上最美的城市之一。 the +序数词+形容词最高级+可数名词单数+in/of 短语, 意为“在…中是第几……的……” As we all know, the Yellow River is the second longest river in China. 众所周知,黄河是中国第二长河。 最高级(-est)的用法 Language points The Amazon Rainforest is one of the _ (large) tropical rainforests in the world. 亚马孙雨林是世界上最大的热带雨林之一。 The Nile River is the _ (long) river in the world. 尼罗河是世界上最长的河流。 Victoria Falls is one of the _ (beautiful) waterfalls on the planet. 维多利亚瀑布是地球上最美的瀑布之一。 The Great Barrier Reef is the _ (long) coral reef system in the world. 大堡礁是世界上长的珊瑚礁系统。 The Mariana Trench is the _ (deep) ocean trench in the world. 马里亚纳海沟是世界上最深的海沟。 “世界之最”练习 largest longest most beautiful longest deepest 词 讲 练 depth n.深度;纵深 常用搭配: in depth 在深度上 - deep adj. 深的 - deeply adv. 深深地 (抽象程度) 1.The _(depth/deep)of the well is 10 meters. 2.This river is 20 meters in _(deep/depth). 3. She is _(deep/deeply)interested in painting. 4. The well is 30 meters _(deep/deeply). 5. 翻译:他深深地爱着自己的祖国。 Language points 例:The hole is six meters in depth. 这个洞的深度是六米。 The river is ten meters deep. 这条河有10米深。 He was deeply moved by the story. 听了这个故事他深受感动。 depth He loves his motherland deeply. depth deeply deep Language points 词 讲 练 unusual adj. 特别的;不寻常的 反义词:usual adj.平常的 unusually adv. 不寻常地 usually adv. 通常 常用句型:It’s unusual to do sth. 去做......是不寻常的。 例句:It’s unusual to see snow in this city in October. 十月在这座城市看到雪是很不寻常的。 She has an unusual hobby—collecting old stamps. 她有个特别的爱好——收集旧邮票。 1. It’s _(usual/unusual)for him to be late for school. 2. Her _(usual/unusual)idea surprised everyone. 3. 翻译:在这个小镇看到明星是很不寻常的。 unusual unusual It’s unusual to see a star in this small town. Exercise 词汇练习 Exercise 1. The Great Pyramid is a great _ (奇观) of the ancient world. 2. We need to get the exact _ (测量数据) of the room before buying the carpet. 3. The temperature today is five degrees _ (低于) zero. 4. The water _ (水平面) in the lake is rising because of the heavy rain. 5. The _ (表面) of the moon is covered with dust and rocks. 6. Mount Qomolangma is the _ (high) mountain in the world. 7. The Sahara is by far the _ (large) hot desert on Earth. 8. What’s the _ (deep) point in the ocean? — It’s the Mariana Trench. 9. Scientists use special tools for the _ (measure) of the trench’s depth. 10. We looked at the stars and _ (wonder) if there is life in space. wonder measurement below surface level highest largest deepest measurement wondered Homework Homework 基础作业 拓展作业 实践作业 绘制一幅“世界自然奇观探险地图”,标注英文名称和关键数据。 以“The most amazing place I want to explore”为题,录制一段2分钟英文解说视频,并尝试解释原因。 上网查询更多关于自然奇观的介绍,每人制作一个自然奇观海报在班级展览。 辅助资源: BBC Earth-Planet Earth National Geographic- Amazing Planet Discovery Channel-Wonders of Nature Lavf59.27.100 Packed by Bilibili XCoder v2.0.2 Lavf59.14.100 null 76538.43 null 60916.37 null 81188.68 $