Unit 4 课时3 Section A 3a-3d（大单元课时课件）英语新教材人教版八年级下册

Unit 4 The Wonders of Nature What is amazing about nature? Section A(3a-3d) Learning Objectives 通过本课时的学习，学生能够： 识别并记忆与 “河流地理” 相关的核心词汇（如 Yellow River, Yangtze River, Nile River, waterfall, civilization, kilometre 等）；掌握描述河流长度、地位和重要性的基础句型。(学习理解) 从对话文本中捕捉关键信息（如河流所属国家、长度、历史意义等），准确完成 “填写表格” 任务；能运用所学词汇和句型进行对话的角色扮演，清晰交流河流相关的地理知识。(学习理解，应用实践) 结合中国或世界其他地理特征的实际场景，与同伴讨论山脉、沙漠、湖泊 等地理事物，提升在真实生活场景中用英语交流地理知识的综合语言运用能力。 (迁移创新) 03 Lead in&Review 01 Pre-listening 02 While-listening 03 Post-listening 04 Summary 05 Language points 06 Homework 07 08 Lead in&Review billion 十亿 million 百万 thousand 千 point 点 five zero eight 1 从小数点开始从右到左，每个数加一个“,”; 2 小数点读“point” ； 3 从左到右读数，每隔三位按百位数读； 4 百位和十位之间加and，若十位为0，and不省略 5 小数点后面的数只读数字，不读数位。 and and and hundred hundred hundred 1,411,708,724.508 billion 十亿 million 百万 thousand 千 point 点 and and and five zero eight How to read a number one billion, four hundred and eleven million, seven hundred and eight thousand, seven hundred and twenty-four point five zero eight hundred hundred hundred - What is the highest mountain in the world? - It’s ____________________! - How high is it? - It’s ____________ metres high. Mount Qomolangma 8848.86 - What is the biggest desert in the world? - It’s ____________________! - How big is it? - It’s ____________ square kilometres in size. Sahara Desert 9,000,000 - What is the lowest place on earth? - It’s ____________________! - How low is it? - It’s ____________ metres below sea. Dead Sea 416 - What is the deepest point in the ocean? - It’s ____________________! - How deep is it? - It’s ____________ square kilometres in size. Mariana Trench 11,000 1. Fendouzhe reached __________ metres. 2. The deep sea begins at _____ metres. 3. The Titanic rests at _______ metres. 4. A whale can dive to over _______ metres. 10,909 200 3,800 2,000 Pre-listening Look and say What do you know about the Yellow River? 5,464 km The Yellow River is 5,464 kilometres long and is the second longest. The Yellow River helped in the . of ancient . development civilizations 巴颜喀拉山 In China, we even call the Yellow River our “mother river” ! We should protect it . at all costs While-listening Main idea Listen to the conversation and choose the best answer. What is the main idea of the conversation? A. It introduces the Hukou Waterfall and its beauty. B. It talks about main rivers and their importance to human civilizations. C. It explains why the Yellow River is called the "mother river". Work on 3a Listen to the conversation and underline the three rivers mentioned. Yaming: Welcome back, Ella! How was your trip? Ella: It was great! We saw the Hukou Waterfall on the Yellow River.Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it’s called the Yellow River? Ella: Because it’s yellow? Yaming: Right. Some parts of the river carry brown and yellow earth. Ella: That’s interesting! I like learning about rivers. My favourite is the Nile. Did you know it’s the longest river in the world? Yaming: Yes, it’s 6,671 kilometres long. It’s very important in Egypt's history. Ella: That’s right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they’re still very important today. Yaming:Yes. In China, we even call the Yellow River our “mother river” ! Ella: We should protect them at all costs. Post-listening Work on 3b What do Yaming and Ella know about these rivers? Read the conversation again and complete the table. River Country Length Importance Yellow River ________km helped in the development of ancient ___________ Nile River ________km China Egypt 5,464 6,671 civilizations Work on 3C Listen to the conversation. Then role-play it. Yaming: Welcome back, Ella! How was your trip? Ella: It was great! We saw the Hukou Waterfall on the Yellow River.Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it’s called the Yellow River? Ella: Because it’s yellow? Yaming: Right. Some parts of the river carry brown and yellow earth. Ella: That’s interesting! I like learning about rivers. My favourite is the Nile. Did you know it’s the longest river in the world? Yaming: Yes, it’s 6,671 kilometres long. It’s very important in Egypt's history. Ella: That’s right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they’re still very important today. Yaming:Yes. In China, we even call the Yellow River our “mother river” ! Ella: We should protect them at all costs. Listen again and fill in the blanks. Yaming: Welcome back, Ella! ? Ella: It was great! We saw the Hukou on the Yellow River.Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the . , do you know why it’s the Yellow River? Ella: it’s yellow? Yaming: Right. Some parts of the river brown and yellow earth. Ella: That’s interesting! I like rivers. My favourite is the Nile. Did you know it’s the longest river in the world? Yaming: Yes, it’s 6,671 kilometres long. It’s very in Egypt’s history. Ella: That’s right. Both the Nile and the Yellow River helped ancient . to develop. And they’re still very important today. Yaming:Yes. In China, we even call the Yellow River our “ ” ! Ella: We should protect them . How was your trip Waterfall travels second longest By the way called Because carry learning about important civilizations mother river at all costs 你的旅行怎么样 瀑布 流淌；延伸 第二长的 顺便说一下 被称作；被命名为 携带；夹带 了解；学习关于…… 的知识 重要的 文明 母亲河 不惜一切代价 因为 Text analysis Yaming: Welcome back, Ella! How was your trip? Ella: It was great! We saw the Hukou Waterfall on the Yellow River.Is that the longest river in China? Yaming: No, the Yangtze River is the longest river in China. It travels the farthest and is about 6,300 kilometres long. The Yellow River is 5,464 kilometres long and is the second longest. By the way, do you know why it’s called the Yellow River? Ella: Because it’s yellow? Yaming: Right. Some parts of the river carry brown and yellow earth. Ella: That’s interesting! I like learning about rivers. My favourite is the Nile. Did you know it’s the longest river in the world? Yaming: Yes, it’s 6,671 kilometres long. It’s very important in Egypt’s history. Ella: That’s right. Both the Nile and the Yellow River helped ancient civilizations to develop. And they’re still very important today. Yaming:Yes. In China, we even call the Yellow River our “mother river” ! Ella: We should protect them at all costs. Greeting the Yellow River length name the Yangtze River length the Nile length importance Read and fill Read the conversation and fill in the blanks. The Yellow River is a famous river in China. People can see the wonderful Hukou on it. It is about 5,464 kilometres long and is the . river in China. It carries earth, so it gets the name “Yellow River”. In China, it is called the “ ” because it helped ancient develop.The Yangtze River is the longest river in China. It the farthest and is about 6,300 kilometres long.The Nile is the longest river , with a of 6,671 kilometres. It is very important in history and also helped ancient civilizations develop.All these rivers are very important today, and we should protect them . Waterfall second longest brown and yellow mother river civilizations travels in the world length Egypt’s at all costs Read and retell Read the conversation again and try to retell it. River Country Length Rank (longest) Importance Yangtze River China 6300 km 1st in China Yellow River China 5,464 km 2nd in China helped in the development of ancient civilizations Nile River Egypt 6,671 km 1st in the world You may begin like this:The Yellow River is a famous river in China. People can see the wonderful Hukou Waterfall on it. ...... Work on 3d Imagine that you are Yaming or Ella.Continue the conversation with a partner about other geographical features in China. Ella: Could you tell me more about China, Yaming? Yaming: Sure! What would you like to know? Ella: What’s the biggest desert in China? Yaming: It’s the Taklimakan Desert. Ella: Do you know ...? Mount Qomolangma Taklimakan Desert Poyang Lake Qinghai Lake the highest mountain the largest desert the largest freshwater lake the largest saltwater lake 8,848.86 metres 330,000 square kilometres 3,583 square kilometres 4,583 square kilometres Other geographical features in China Can you read this number? One billion, four hundred and eleven million, seven hundred and seventy-eight thousand, seven hundred and twenty-four. 根据中国国家统计局发布的第七次全国人口普查数据（2020年），以及后续的年度人口变动情况抽样调查数据： 中国总人口约为 14.1178 亿人 Language points 1. It travels the farthest and is about 6,300 kilometres long. 它流经的距离最远，约有 6 300 千米长。【P34】 ① 6,300 kilometres long 表示 “6 300 千米长”， 是 “基数词 + 单位词 + 形容词” 结构。 当基数词大于 1 时，单位词要用复数形式 ② 物体长、宽、高、深等的表达: 基数词 + 单位词 + 形容词（long、wide、high、deep 等） 基数词 + 单位词 + in + 名词（length、width、height、depth 等） 这条河宽 20 米。 The river is _______________ (= 20 metres______________). 20 metres wide in width 基数词+连词符+单数名词(+连词符+形容词) =_____________________________________. 拓展 基数词+单数/复数名词+形容词 这棵树30米高。 It is a 30-meter-tall tree.=The tree is _________________. 王先生的儿子1岁。 Mrs.Wang has a one-year-old son.=Mrs.Wang's son is ______________. 30 meters tall one year old 定语 表语 定语 表语 及时练习 1. There is a ________ boy in the classroom. A. ten-years-old B. ten-year-old C. ten year old D. ten years old 定语 B 2. The building is about ________ high. A. 100-metre B. 100 metres C. 100-metres D. 100-metre-tall be后作表语 B 3. 这个男孩只有5岁，但他能写50字的故事。 The boy is only 5 years old, but he can write ________ stories. 4. 这棵树大约8米高。 The tree is about 8 _____________. 50-word 定语 metres tall 2. We should protect them by all means. 我们应该尽一切方法保护它们。【P34 3a】 ① means /miːnz/ n. 方式；途径 ② means of (doing) sth. （做）…… 的方式 / 途径 by all means 尽一切办法；务必 by no means 绝不，一点儿都不 对于许多人来说，汽车仍是他们主要的交通工具。 For many people, the car is still their ___________________. means of transport 你夏天一定要去那里参观一趟。 You should______________visit there during the summer. by all meanzs 3. helped in the development of ancient civilizations. 有助于古代文明的发展。【P34 3b】 ① development /dɪˈveləpmənt/ n. 发展；壮大 高频 ② (with) the development of （随着）…… 的发展 句子翻译 1.随着科技的发展，我们的生活变得越来越便利。 2.发展中国家需要更多的国际支持来应对环境问题。 3.这家公司正在开发一款新的智能手机。 With the development of science and technology, our life is becoming more and more convenient. Developing countries need more international support to deal with environmental problems. The company is developing a new type of smartphone. Summary by the way 顺便提一下；附带问一句 learn about 了解 ancient civilizations 古代文明 mother river 母亲河 at all costs 不惜任何代价 the development of ……的发展 根据句意和首字母提示写出所缺单词。 1.(2024江苏无锡中考改编)The children did a lot of ____________ in the lab to finish the science project. 2.When Li Bai enjoyed the ______________, he said, “Its torrent dashes down three thousand feet from high; As if the Silver River fell from the blue sky.” 3.The pool was so deep that I could not touch the ___________ of it. 4.It is not easy to find water or green plants in a ___________. desert     bottom     waterfall     research Exercise. 用括号内所给单词的适当形式填空。 5.(2025江苏扬州中考改编)With a __________(deep) of 64 metres, Lake Erie is the shallowest of the Great Lakes. 6.(2024江苏无锡中考)Jim has gone to bed? This is very __________ (usual). He always stays up late. 7.(2024江苏扬州中考改编)Zebrafish are taken to Shenzhou-18 because they have advantages like small size and a short ________________ (develop) cycle. 8.Do you know the ___________ (long) of the Huangpu River? 　length     　development     　unusual 　depth     根据汉语意思完成句子,每空一词。 9.这艘科研船比许多其他船只下潜得更深。 This research ___________ __________ deeper than ________ _________. 10.地壳的不同部分承载着山脉和海洋。 Different __________ of the earth’s crust __________ mountains and oceans. 11.两河流域和印度河都孕育了早期文明。 _________ Mesopotamia ________ the Indus River supported early ________. 12.我们必须尽一切办法减少塑料污染。 We must reduce plastic pollution _______ ________ __________. 　civilizations     　and     　Both     others     　many     dived     vessel     　carry     　parts     　by     　all     means 拓展作业 以小组为单位，搜查更多中国之最并形成报告分享。 基础作业 抄写记忆本课 单词和短语，单词5遍，短语1遍。 提升作业 根据本课内容制作思维导图并在组内分享。 Homework Lavf59.27.100 Packed by Bilibili XCoder v2.0.2 $众所周知，我国幅员辽阔，陆地面积就高达960万平方公里。在这片辽阔的祖国大地上，几乎包含了全球所有的地形。这里有雄伟的高原、起伏的山地、广阔的平原、低缓的丘陵以及群山环绕的盆地。这些地形共同造就了辽阔的祖国大地，且让我们一起细数那些你不知道的中国地理之最。第一，我国面积最大的高原是青藏高原。青藏高原位于我国的西南部，总面积约250万平方公里，平均海拔在4000米以上，因此这里是我国最大、世界海拔最高的高原，享有世界屋脊之称。不仅如此，这里还有我国最高的山峰。珠穆朗玛峰是喜马拉雅山脉的主峰，海拔高达8800 48.86米，也是世界上海拔最高的山峰。第二，我国最长最宽的山脉是昆仑山脉，西起帕米尔高原，东部延伸至青海和四川境内，全长约2500公里，最窄处也有130公里，最宽处为200公里，总面积五十多万平方公里。第三，我国最长的河流是长江，长江是我国第一大河，发源于唐古拉山附近，全长6300公里，这里不仅拥有超强的水能开发能力，而且通航里程甚至高达2800公里，素有黄金水道之称。第四，我国含沙量最大的河流是黄河，黄河发源于玉古宗列盆地附近，全长5464公里。由于河流中段流经黄土高原地区，大量的泥沙涌入黄河，每年涌入黄河的泥沙数量高达16亿吨，因此黄河也成为了世界上含沙量最多的河流。不仅如此，黄河还是中华文明最主要的发源地，是中华民族的母亲河。第五，我国海拔最高的河流是雅鲁藏布江，发源于喜马拉雅山中段的北坡，长为2057公里，河床高度几乎都在海拔3000米以上，因此是世界海拔最高的河流，也是中国最长的高原河流，素有高原母亲河之称。第六，我国最长的内陆河是塔里木河，位于塔里木盆地的北部，全长2179千米，不仅是中国最长的内陆河，而且是世界第五大内陆河。第七，我国最长的运河是京杭大大运河，南起杭州，北至北京，全长1794公里，是世界上里程最长、工程最大的古代运河，也是最古老的运河之一，并且被纳入世界文化遗产名录。第八，我国最古老的运河是灵渠，位于广西兴安县境内，不仅连通了相江河、漓江，而且还打通了南北水上的通道，为秦王朝统一岭南地区提供了重要保障，距今已有两千多年的历史，是世界上最古老的运河之一，有着世界古代水利建筑明珠的美誉。第九，我国唯一注入北冰洋的河流是额尔齐斯河。额尔齐斯河是饿壁河最大的支流，有引水支撑，发源地于二泰山南坡，然后流经哈萨克斯坦，最后通过俄罗斯流入北冰洋。因此，额尔齐斯河是我国唯一注入北冰洋的河流。第十，我国面积最大的咸水湖是青海湖，位于青藏高原的东北部，总面积4625平方公里。这里不仅是中国面积最大的高原内陆咸水湖，而且还是世界上海拔最高的湖泊之一。第十一，我国面积最大的淡水湖是鄱阳湖。我国有五大淡水湖，它们分别是江西的鄱阳湖、湖南的洞庭湖、安徽的巢湖、江苏的太湖以及洪泽湖，其中面积最大的是江西的鄱阳湖，面积高达3150平方公里，这里不仅是我国第一大淡水湖，而且还是中国第二大湖，仅次于青海湖。第十二，我国最深的湖泊是长白山天池，坐落在吉林省东南部，总面积9.82平方公里，最深处高达3 373米，因此是我国最深的湖泊，不仅如此，长白山天池还是松花江、鸭绿江以及图们江的发源地，素有三江之源的美誉。第十三、我国最大的瀑布是黄果树瀑布，古称白水河瀑布。黄果树瀑布位于中国贵州省安顺市，瀑布高度为77.8米，宽101米，因此是我国最大的瀑布，也是世界著名的大瀑布之一，素有中华第一瀑之称。第十四，我国面积最大的平原是东北平原，是中国三大平原之一，其余两个分别是华北平原以及长江中下游平原，面积最大的就是东北平原，它分别由三江平原、松本平原以及辽河平原组成，面积高达35万平方公里，这里不仅土地十分肥沃，而且还是世界三大黑土地之一，也是我国重要的粮食生产基地。第15，我国面积最大的盆地是塔里木盆地，位于我国新疆的南部，面积约四十多万平方千米，这里还有我国最大的沙漠塔克拉玛干沙漠，它不仅是我国最大的沙漠，而且还是世界第二大流动沙漠，几乎每年都以50米左右的速度向南移第16，我国最大的峡谷是雅鲁藏布江，峡谷全长504.6千米，最深处6009米，也是世界上最大、最深的峡谷。第16，我国最大的岛屿是台湾岛，是我国三大岛屿之一，其余两个分别是海南岛以及崇明岛，其中面积最大的是台湾岛，面积高达3.5 8万平方公里。第17，我国最大的海岛是舟山群岛，分别有2085个岛屿组成，占中国海岛数量的20%，海域面积高达22000平方公里。第18，我国最大的内海是南海，位于中国大陆的南方，属于太平洋西部的海域，总面积高达350万平方公里，平均水深1212米，最大深度5559米，为中国近海中面积最大、水最深的海区。第19，我国最大的内海是渤海，也是我国最北的近海，总面积8万平方公里，然而平均水深仅18米，最大水深85米，因此是我国最浅的内海。第二是我国最大的黄土堆积区是黄土高原，为中国四大高原之一。其余三个分别是青藏高原、内蒙古高原以及云贵高原，而黄土高原由于气候地理因素，导致这里植被稀少，水土流失严重，成为了我国最大的黄土堆积区，面积高达30万平方公里。对此，你还知道哪些关于中国的地理之最呢？欢迎评论区留言。 Section a activity, three a read the conversation and underlined the three rivers mentioned. welcome back, ella. How was your trip? IT was great. We saw the hook, a waterfall on the yellow river. Is that the longest river in china? No, the yank sea river is the longest river in china. IT travels the farthest and is about six thousand, three hundred kilometers long. The yellow river is five thousand, four hundred and sixty four kilometers long, and is the second longest. By the way, do you know why it's called . the yellow river? Because it's yellow. right? Some parts of the river Carry Brown and . yellow earth. That's interesting. I like learning about rivers. My favorite is the nile. Did you know it's the longest river . in the world? Yes, it's six thousand, six hundred and seventy one kilometers long. It's very important in egypt's history. That's right. Both the nail and the yellow river helped intern civilizations to develop, and they're still very important today. Yes, in china, we even called the yellow river our mother river. We should protect them at all costs.