Unit 4 The Wonders of Nature Section A 1a-1d课件 2025-2026学年人教版八年级英语下册

该初中英语课件围绕“自然奇观”主题，核心知识点包括形容词最高级、特殊疑问句及大数与单位运用。课堂导入通过展示维多利亚瀑布等自然奇观图片提问，引导学生说出名称和特点，再过渡到1a图片匹配、1b听力填空，结合测量数据表格形成从认知到应用的学习支架。 其亮点在于情境化教学与核心素养融合，借助听力音频、测量数据表格等资源，培养语言能力（如听后填写描述和数据），文化意识（对比中外自然奇观，如尼罗河与珠穆朗玛峰），思维品质（引导探究自然奇观的独特性）。学生能提升语言运用和跨文化理解，教师可借助结构化活动高效教学。

UNIT 4 The Wonders of Nature Section A 1a-1d Knowledge & Skills Master the use of superlative adjectives (e.g., highest, biggest, lowest, deepest) to describe natural wonders. Use special questions (What's the ...? / How ... is it?) to ask and answer about facts of places. Recognize and use large numbers and units (e.g., metres, square kilometres) in context. 01 Affect & Competence Appreciate the scale and diversity of the natural world. Understand that knowledge is dynamic and needs updating. 02 Learning Objectives Do you know what natural places they are? What amazing things do you know about them? Let’s take a look at them together! Lead in 1.Do you know the name of the waterfall in the photo? The waterfall in the photo is Victoria Falls. It is one of the world’s largest waterfalls, known for its massive spray and roar. 2.What do you think is special about it? 3.What other natural wonders do you know? Examples: the Grand Canyon, the Great Barrier Reef, Mount Everest. on the Churún River(丘伦河) , in the Guiana Highlands (圭亚那高原) of Venezuela(委内瑞拉) the world’s tallest waterfall, with a total drop of about 979 meters Angel Falls 1. Do you know the name of the waterfall in the photo? 2. What do you think is special about it? Victoria Falls. It is one of the largest waterfalls in Africa. It's very wide and has a huge flow of water. The mist from it can be seen from far away, and it's also located on the border between two countries. 3. What other natural wonders do you know? Natural wonders are amazing, unique things made by nature (not humans). They are often very big, beautiful, or special. Examples include huge waterfalls, high mountains, deep canyons(峡谷), or strange rock formations. These places usually surprise people with their natural power or beauty. Nile/naɪl/ river 尼罗河 "There is a river so long, that it flows through 11 countries. If you walk its whole length, it will take you over a year!" Match the places with the pictures. ____ Nile River ____ Angel Falls ____ Mount Qomolangma ____ Dead Sea ____ Sahara Desert ____ Mariana Trench E F A D C B 1a Nile River 尼罗河 /naɪl/ What do you know about these natural wonders? the longest river in the world, about 6,650 kilometers long flow through 11 countries in Northeast Africa home to animals like Nile crocodiles, hippos, and Nile perch 鲈鱼 Nile River: the longest river in the world Nile River（尼罗河） 位置与长度：非洲东北部，世界公认最长河流之一，全长约6650 千米；发源于东非高原，自南向北流经 11 国，最终注入地中海。 两大支流：白尼罗河（源自维多利亚湖，流程更长）与青尼罗河（源自埃塞俄比亚塔纳湖，提供约 80% 水量与泥沙），在苏丹喀土穆汇合为干流。 文明与价值：古埃及文明的母亲河，历史上的定期泛滥造就了肥沃河谷；如今是苏丹、埃及等国的核心水源，支撑农业、航运与城市发展，阿斯旺大坝调控了洪水与发电。 Listen to the game show. Complete the descriptions of the places. 1b highest mountain 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 biggest desert lowest place deepest point Task 4: Listen again, complete the measurements in 1 b with the numbers below Place Description (1 point) Measurement (2 points) Mount Qomolangma the ________ in the world ________ mertres high Sahara Desert the ________ in the world about ________ square kilometers in size Dead Sea the ________ on earth ________ metres below sea level Mariana Trench the ________ in the ocean about ________ metres deep highest biggest lowest deepest 416 8,848.86 11,000 9,000,000 Tips: 听之前先默读数字 在大小方面 测量数据 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 thousand 千 million 百万 billion 十亿 Mount Qomolangma: the highest mountain on Earth 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! as well as 表示“和……一样好” any other + 名词复数，表示“还有其他……吗？” Sahara Desert: the biggest desert in the world 7 ，seven billion 106 ，one hundred and six million 403 ，four hundred and fifty-three million 515 five hundred and fifteen The largest shark in the deep sea is the Greenland shark. It’s also the longest-lived shark. Some can be over 400 years old. What is the largest shark in the deep sea? What is the bottom of the deep sea like? The bottom of the deep sea is very dark and very cold. There is extreme pressure from the weight of the water above. Why is it important to research the deep sea? Because it helps us find new living things, keeps our planet healthy, gives us useful stuff like medicine, and teaches us about Earth’s past. Look and say: 6,248 88,252 2,674,561 3,675,165,464 six thousand two hundred and forty-eight eighty-eight thousand, two hundred and fifty-two 英语中没有万这个单位，要表示万需借用thousand。如一万用十个千表示，也就是10000(ten thousand)，十万用百个千表示，也就是100000 (one hundred thousand)。 two million, six hundred and seventy-four thousand, five hundred and sixty-one three billion, six hundred and seventy-five million, one hundred and sixty-five thousand, four hundred and sixty-four Dead Sea: the lowest place on Earth’s land surface 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 23 Task 4: Listen again, complete the measurements in 1 b with the numbers below Place Description (1 point) Measurement (2 points) Mount Qomolangma the ________ in the world ________ mertres high Sahara Desert the ________ in the world about ________ square kilometers in size Dead Sea the ________ on earth ________ metres below sea level Mariana Trench the ________ in the ocean about ________ metres deep highest biggest lowest deepest 8848.86 9000000 416 11000 416 8,848.86 11,000 9,000,000 平方千米 海平面以下……米 24 上网查找一个“中国之最”（如最高建筑、最长河流），用英文写三句话介绍。 预习3a-3d和生词。 复习形容词最高级和数字的表达法及本课词汇对话。 Lavf57.71.100 Packed by Bilibili XCoder v2.0.2 Lavf58.20.100 null 110422.555 null 78706.805 $