Unit 4 课时3 Section A 3a～3d 课件 2025-2026学年人教版八年级英语下册

Unit 4 The Wonders of Nature Section A (3a~3d) 理解关于三条著名河流的对话，并完成包含各河流详细信息的表格； 能够分角色表演对话，并继续讨论中国的其他地理特征。 掌握黄河、长江、尼罗河、长度、重要性等单词和短语的发音、拼写及含义； 学习目标 Do you know what these place are? What do you know about them? The Yellow River. The Yangtze River. The Nile. Lead in Read the conversation and underline the three rivers mentioned. River _____________ _____________ _____________ Yellow River Yangtze River Nile River 3a 壶口瀑布（Hukou Waterfall） 壶口瀑布是黄河干流瀑布，是中国的第二大瀑布，世界上最大的黄色瀑布。黄河奔流至此，两岸石壁峭立，河口收束狭如壶口，故名壶口瀑布。瀑布上游黄河水面宽300米，在不到500米长距离内，被压缩到20—30米的宽度。1 000立方米/秒的河水，从20多米高的陡崖上倾注而泻，形成“千里黄河一壶收”的气概。 Let’s learn Read the conversation again and answer the questions. 1. What waterfall do Yaming and Ella mention? 2. Why is the Yellow River called "yellow"? 3. Is Ella interested in rivers? The Hukou Waterfall. Because some parts of the river carry brown and yellow earth. Yes. 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 5,464 Africa 6,671 civilizations 3b 河流 国家 长度 重要性 Pay attention to the expressions. 最长的河流 流经的距离最远 ……公里长 第二长 “the+序数词+最高级”表示“第……最……的” ……和……都 古代文明 call sb./sth. ... 把某人/物叫做…… 顺便说一下 了解/学习…… Let’s learn 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. 雅明：欢迎回来，艾拉！旅行怎么样？ 艾拉：很棒！我们看了黄河上的壶口瀑布。那是中国的第一长河吗？ 雅明：不是，长江是中国最长的河流， 全长约6300公里，也是流程最远的。 黄河长5464公里，是第二长河。顺便说一下，你知道它为什么叫黄河吗？ 艾拉：因为它呈黄色？ 雅明：对，有些河段夹带着棕黄色的泥沙。 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. 艾拉：真有意思！我喜欢了解河流。我最喜欢尼罗河。 你知道它是世界上最长的河流吗？ 雅明：知道，它有6671公里长，在埃及历史上非常重要。 艾拉：没错。尼罗河和黄河都曾孕育古代文明，至今依然重要。 雅明：是的，在中国，我们甚至称黄河为“母亲河”！ 艾拉：我们无论如何都应该保护它们。 Translate the expressions into English. 1. 流经的距离最远 2. 顺便说一下 3. 第二长 4. ……和……都 5. 不惜任何代价 6. 古代文明 7. 最长的河流 8. ……公里长 9. 了解/学习…… 10. 把某人/物叫做…… travel the farthest by the way the second longest both...and... at all costs ancient civilization the longest river ... kilometres long learn about call sb./sth. ... Ella: _____ _________! I like learning about rivers. __ _________ __ the Nile. ___ ____ ____ it’s the longest river in Africa? Yaming: Yes, it’s 6,671 kilometres long. ___ _____ _________ in Egypt’s history. Ella: That’s right. ____ the Nile ___ the Yellow River _____ ______ ___________ 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 _______ ____ __ ___ ______. Criteria (标准) Score 1. Be accurate! (发音准确) 2. Notice the stress! (注意重音) 3. Be vivid! (表演生动) 4. Be emotional! (情感充沛) Listen to the conversation. Then role-play it. 3c What other geographical features in China do you know? the longest river? the biggest desert? the largest freshwater pool? the tallest mountain? the biggest island? the lowest basin (盆地)? What’s ... Further thinking Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China. For example: 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. /ˈdezət/ n. 沙漠 The largest waterfalls Huangguoshu Waterfall (黄果树瀑布) The largest saltwater lake The largest desert Taklamakan Desert (塔克拉玛干沙漠) 3d 1. The main purpose of his holiday to Greece was to go ________ (dive). 2. Our school library is the ________ (large) one in the district, with a lot of different kinds of books. 3. The Yellow River is very important to Chinese ___________ (文明). 4. The Dead Sea is the ________ (low) place on earth. 5. The Taklimakan is the largest ______ (沙漠) in China. diving 用单词的适当形式填空。 largest civilization lowest desert 当堂检测 Homework ✍ Preview Grammar Focus on page 35. ✍ Read and imitate (模仿) the conversation. Pay attention to the stress, then record your version. 91011.68 Lavf58.20.100 null 91063.93 $