Unit4 Section A（2a-3d)课件 2025-2026学年人教版英语八年级下册

Section A 2a—3d Unit 4 The Wonders of Nature 通过听、说、读等方式，获取并正确认读关于深海探索、河流特征等主题词汇（如depth, vessel, unusual,bottom, civilization 等），感知自然奇观相关词汇用法。（学习理解） 01 通过听力捕捉、对话分析，获取文本中关于深海深度划分、河流长度与重要性的关键信息，归纳并内化询问与介绍自然奇观的常用表达（如Where does the deep sea begin?, It travels the farthest and is... kilometres long.）。（应用实践） 02 通过讨论和角色扮演，理解自然奇观的价值与保护意义，能够主动分享对自然奇观的探究问题，并认同保护自然的理念。 （迁移创新） 03 学习目标 Can you say some words related to water? Lead in sea river lake waterfall snow and ice 今天我们将进行地球“水圈探索”，作为“地球水研究者国际研讨会”的研究员，我们将在探索中肩负使命，学到更多水的奥秘，尽我们所能保护人类共同的家园。 It is 8,848.86 metres high. What’s the highest mountain in the world? How high is it? Mount Qomolangma Mount Qomolangma is the highest mountain in the world. Nile River What do you know about the following numbers? 6,671 kilometres long What do you know about the following numbers? Sahara Desert about 9,000,000 square kilometres in size 1a What do you know about the deep sea? Let’s follow Fenfouzheto explore. 1a Try to label the depths in the picture with the information on the left. A. Depth Fendouzhe reached B. Depth at which the deep sea begins C. Depth at which the Titanic rests D. Deepest dive of a whale A /depθ/ n. 深（度） /daɪv/ v. & n. 潜水 泰坦尼克号 B D C 1. Fendouzhe reached ______________. 2. The deep sea begins at ______________. 3. The Titanic rests at ____________. 4. A whale can dive to _________________. 2a What do you know about the deep sea? Complete the sentences with the information from the picture. 潜水 10,909 metres 200 metres 3,800 metres over 2,000 metres What do you know about the deep sea? Copmlete the sentences with the information from the picture. 2a B D C A 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 /rɪˈsɜːtʃ/ v. & n. 研究 /ˈvesl/ n. 大船；轮船 2c Listen again. Complete the sentences with the facts from the conversation. 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 “sea”. Some can even create their own                     . 4. There is rubbish even at                   metres deep. 2020 ocean floor 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 the questions with a partner. What is the largest shark in the deep sea? What is the bottom of the deep sea like? Why is it important to research the deep sea? 在……的底部 e.g. A: What is the largest shark in the deep sea? B: I think it’s the whale shark. A: Do you know how large it is? B: It can grow up to about 10 to 20 metres in length. A: What is the bottom of the deep sea like? B: It is dark, freezing, and has high pressure. There are also many unique creatures. A: Why is it important to research the deep sea? B: Because the deep sea has unique species for research, holds important resources, and can help control our climate. 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? /ˈbɒtəm/ n. 底部 What is the name of the river mentioned in the video? It’s the Yellow River. Is it the longest river in China? No, the longest river is the Yangtze River. Do you know anything else about the Yellow River or the Yangtze River? Read the conversation and underline the three rivers mentioned. 3a waterfall /ˈwɔːtəfɔːl/ n. 瀑布 civilization /ˌsɪvəlaɪˈzeɪʃn/n. 文明 means /miːnz/ n. 方式 Which is the longest river in China? Why are rivers important? at all costs 无论如何； 不惜一切代价 Read the conversation again and complete the table. 3b River Country Length Importance Yellow River ________km helped in the development of ancient ___________ Nile River ________km China Egypt 5,464 6,671 civilizations /dɪˈveləpmənt/ n. 发展 River Country Length Importance Yellow River     Nile River China  Egypt 3b What do Yaming and Ella know about these rivers? Read the conversation again and complete the table. _______km helped in the development of ancient ___________ _______km 5, 464  6, 671 civilizations Listen to the conversation. Then role-play it. 3c Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China. 3d 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 Qinghai Lake (青海湖) The largest desert Taklamakan Desert (塔克拉玛干沙漠) Let’s protect water resources. Evaluation(评价) Complete content (内容完整) Correct language (语言准确) Clear voice (自信表达) Group discuss: Why are both rivers and the deep sea important? What can we do to protect them? Write 2-3 pieces of slogans: For examples: Don’t throw rubbish into rivers or the sea. Learn about water ecosystems and tell others. Support scientific research about water. Group work Rivers are the past and present of human civilization. The deep sea may be the future. To protect water is to protect life itself. Exercise 1. The scientists will ______ (潜水) into the deep sea to study the unusual creatures. 2. We still don't know the exact ______ (深度) of some parts of the ocean. 3. The Yellow River is very important to Chinese ___________ (文明). 4. The Taklimakan is the largest ______ (沙漠) in China. 5. The ________ (deep) part of the ocean is about 11,000 metres. 6. The ____________ (develop) of ancient Egypt depended on the Nile River. 7. Some deep-sea animals look _________ (usual) and even scary. 8. We should protect our “mother river” by all ______ (mean). 9. The ________(deep) of the swimming pool for kids is 1.2 metres. 10. The _______ (bottom) of the sea is dark and quiet. 11. Of all the students in our class, Lucy lives the _______(far)from school. dive depth civilization deepest desert development unusual means depth bottom farthest Homework 基础作业 拓展作业 实践作业 熟读3a的对话内容，背诵其中描述黄河、长江、尼罗河长度和重要性的句子，并用英语默写下来。 根据2a-2d的深海相关内容，结合自己的查阅，用英语写5个关于深海的趣味小知识。 和家人合作，选择中国一处海洋或者河流景观，用英语制作一份简易介绍卡片，包含名称、位置、一个特色特点这三项信息。 null 78863.555 null 60916.37 Lavf59.27.100 Packed by Bilibili XCoder v2.0.2 null 96106.055 $