Unit 4 Lesson 3 Section A (3a-3d)（讲解课件）-【优翼·学练优】2025-2026学年八年级英语下册同步备课（人教版）

该初中英语课件围绕“自然奇观”主题，聚焦黄河、长江、尼罗河的地理事实、文明意义及保护方法。课堂从壶口瀑布图片提问切入，通过视频辅助、对话阅读、表格填写等学习支架，串联河流知识，引导学生理解河流与文明的关系。 其亮点在于以任务驱动提升语言能力，如Pair Work编对话练习目标语言；融入黄河“母亲河”等文化内容，增强文化意识；通过Further Thinking分析河流作用，培养思维品质。采用视频、角色扮演等方法，学生能综合运用语言，教师可高效开展互动教学。

Unit 4 The Wonders of Nature Section A What is amazing about nature? (3a-3d) Learning Objectives In this lesson you will: 1. identify key geographical facts about the Yellow River, Yangtze River and Nile. 2. explain how rivers help civilizations develop and suggest ways to protect them. 3. make up new conversations to talk about Chinese geographical features using the target language. Look and Say What color is the waterfall in the pictures? Why does it have such a color? What waterfall do you think it is? It’s yellow. The water carries brown and yellow earth. It may be Hukou Waterfall. What do you know about the Hukou Waterfall? It’s at the border between Shanxi and Shaanxi. It’s on the Yellow River. It’s the second largest waterfall in China. It’s the largest yellow waterfall in the world. It gets its name because the Yellow River narrows here like a kettle's mouth when flowing through. We know the Hukou Waterfall is just one part of the Yellow River's journey. What do you know about the Yellow River? Why is it called “mother river”? Free Talk Here’s a video to help us get the answers! Read 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? 3a 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 called the Yellow River our "mother river"! Ella:  We should protect them at all costs. More questions for details Who saw the Hukou Waterfall on the trip? Why is the water yellow in the Yellow River ? What’s the longest river in China? What’s Ella’s favourite river? Ella. Some parts of the river carry brown and yellow earth. The Yangtze River. The Nile. Here’s a video to help us know more about the Yangtze River. Here’s a video to help us know more about the Nile. 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 Eygpt 5464 6671 civilizations 3b Further Thinking How do you think the rivers helped ancient civilizations to develop? Water Supply: Rivers provided fresh drinking water for people, their farm animals, and the plants they grew. Transportation and Trade: Rivers acted as natural "roads" for boats. Ancient civilizations used rivers to move goods and people easily, which helped trade and communication between different areas. Settlement(定居): The reliable food and water allowed people to stop being nomads(游牧民) and settle down in one place. This led to the growth of villages, which later became large cities. Why are rivers still very important today? Give examples to support your opinions. Provide drinking water: Many cities get clean water from rivers. For example, the Yangtze River supplies water to over 400 million people in China. Help agriculture: Rivers offer water for irrigating farms. Like the Mississippi River in the US, which waters fields growing corn and soybeans. Creating Electricity: Dams(水坝)are built on rivers to create hydropower. The flowing water spins turbines（水带动涡轮机旋转） to generate electricity for homes, schools, and factories. ... What could we do to protect rivers? stop dumping waste into rivers reduce chemical use plant trees along river banks Listen to the conversation. Then role-play it. While listening, you should focus on how they speak: Notice their tone (e.g. friendly, encouraging, proud...). Identify their emotions (e.g. excitement, hesitation, confidence...). Pay attention to pauses and emphasis on certain words. 3c Think and Share From what aspects can we decribe a natural wonder？ Basic Information: Include its name, location (country, city, or region), and whether it’s famous locally/globally. Physical Features: Talk about its shape, size (length, height, area), color, or unique natural forms (e.g., rocks, lakes, waterfalls). Cultural/Historical Significance:Talk about its role in local culture, history, or people’s lives. Human Connections: Share how people interact with it (e.g., tourism, protection efforts, daily use like drinking water). Pair Work 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 ...? 3d Taklimakan Desert It’s in Xinjiang, China. It is the largest desert in China. It’s about 337,600 square kilometers. It is very dry there, with little rain. But around its edges, there are small oases (green places with water) where people live and grow crops. Sample Conversation 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 where it is and how big it is? Yaming: It’s in Xinjiang, in the northwest of China. It covers about 337,600 square kilometers. Ella: That's huge! Is it possible for people to live there? Yaming: It is very dry with little rainfall. But around its edges, there are small oases where people can live and grow crops. Ella: That's fascinating. I hope I can visit it one day. 1. Both the Nile and the Yellow River helped ancient civilizations to develop. Language Points civilization是名词，意为“文明；文明社会” 常见搭配： ancient civilizations(古代文明) modern civilization(现代文明) develop a civilization(发展文明) destroy a civilization(摧毁文明) the rise and fall of civilizations(文明的兴衰) develop 作动词 1) 表示 “（社会、经济、国家等）发展；进步” e.g. China has developed rapidly in the past 40 years.（中国在过去 40 年里发展迅速。） 2) 表示 “培养（技能、习惯、兴趣等）” e.g. It’s important to develop good eating habits.（培养良好的饮食习惯很重要。） 3)表示 “（疾病、问题等）出现；发展” e.g. The problem developed into a serious crisis.（这个问题逐渐发展成了严重的危机。） development是develop的名词形式，意为“发展；进步；培养……”等 the development of ... ……的发展/培养 e.g. The development of technology has changed our daily lives.（科技的发展改变了我们的日常生活。） Language development in children starts at a very early age. （儿童的语言能力发展从很小的时候就开始了。） 2. We should protect them at all costs. at all costs意为 “ 不惜一切代价；无论如何” e.g. We must protect the environment at all costs. 我们必须不惜一切代价保护环境。 You should avoid making this mistake at all costs. 你无论如何都要避免犯这个错误。 本文件著作权为创作公司所有, 仅限于教师教学及其他非商业性和非盈利性用途。如发现盗用、转卖、网络传播等侵权行为, 本公司将依法追究其相应法律责任。 部分素材选自网络, 如有争议, 请联系删改。 声 明 91011.68 $