Unit 4 The Wonders of Nature Section A 2a-2d 课件 2025-2026学年人教版八年级英语下册

UNIT 4 The Wonders of Nature Section A 2a-2d Knowledge & Vocabulary Master key words: deep sea, submersible, ocean floor, Fendouzhe, rubbish etc. Know key depth facts: Fendouzhe’s dive, the start of the deep sea, the Titanic’s depth, and the deepest whale dive. 01 Listening Skills Predict conversation topics before listening. Identify discussed topics and complete fill-in-the-blanks with key details from the audio. 02 Learning Objectives Speaking & Thinking Ask and answer questions about the deep sea with a partner. Understand the importance of protecting the deep ocean. 03 Let’s watch Here is a deep sea mysterious box. Let’s open it to see what’s inside? ✨ Some animals here create their own light. 🗑️ There is rubbish even here. 🏔️ You could hide Mount Everest here. Lead in What do these clues tell us about the deep sea? dark being polluted pressure strange fish submarines Lead in 2a Complete the sentences with the information from the picture. 第一步：读句子，明确需要填写的 “核心信息点”； 第二步：观察深度图，找对应标注； 第三步：整体检查，确认无误。 A D C B A class is asking a deep-sea researcher some questions after his talk. What questions do the students ask the researcher? The deep sea is darker and colder as we go down. How deep the ocean can be? 2b Listen and tick the topics they discuss. □ where the deep sea begins □ why people are researching the deep sea □ which Chinese submersible dived deeper in the water than many others □ what deep-sea animals are like □ how everyone should protect the deep sea √ √ √ Fendouzhe （奋斗者号） Fendouzhe is a super advanced deep-sea submersible(潜水器) made by China. It can carry scientists down to the deepest parts of the ocean, like the Mariana Trench. In 2020, it successfully reached the bottom of the trench, over 10,000 meters deep! It helps us explore the mysterious deep sea, discover new creatures, and learn more about our planet. /səbˈmɜːrsəbl/ What do you know about the deep sea? Complete the sentences with the information from the picture. 1. Fendouzhe reached ______. 2. The deep sea begins at ______. 3. The Titanic rests at ______. 4. A whale can dive to ______. 2c D A C B Mr Jones: Well, many deep-sea animals are ____________________. Some animals are blind, but they can "see" as well as others. Some even __________________! 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 ________ many people. Ms Gao: That's terrible! We should do something about it. Mr Jones: You're right! large and unusual create their own light shocked 有些动物没有视力，却能和其他动物一样“感知”周围。 自己发光 感到震惊 “as + 形容词或副词原形 + as”为同级比较，表示两者在某一方面相同。 any other + 名词复数，表示“还有其他……吗？” as well as 表示“和……一样好” Titanic （泰坦尼克号） The Titanic was a famous British passenger ship built over 100 years ago. It was once called "unsinkable" because it was very large and had many safety features for its time. In April 1912, it set off on its first trip from the UK to the US, carrying more than 2,200 people. Sadly, it hit a big iceberg in the Atlantic Ocean and sank quickly. A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss. What information can we get from the instruction? Who are talking in the conversation? What happened before the conversation? Students and a deep-sea researcher. The deep-sea researcher gave a talk to students. 2d Read the questions and think of more you would like to ask the deep-sea researcher. ● 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? ● What other vessels dived to the bottom of the ocean? ● What do deep-sea animals usually eat to survive? ● How cold is the water in the deep sea? ● What tools do researchers use to study the deep sea? ● ... bottom...的底部 、 Research the answers. P33 ● 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? ● What other vessels dived to the bottom of the ocean? ● What do deep-sea animals usually eat to survive? ● How cold is the water in the deep sea? ● What tools do researchers use to study the deep sea? The largest shark in the deep sea is the Greenland shark (格陵兰鲨). It is usually dark, cold, and covered with soft sedimen (沉积物). Other vessels include Trieste (迪里雅斯特号) and Alvin (阿尔文号). It helps us learn about ocean life and get useful things for our lives. They usually eat other small animals or organic debris (有机碎屑). It is very cold, usually around 0-4 ℃. Researchers use vessels like Fendouzhe and cameras to study the deep sea. 词 讲 练 development n. 发展；壮大 develop v. 发展 形容词：developing（发展中的） developed（发达的） 用法：作名词，常用搭配 the development of sth.（……的发展）， 如economic development（经济发展）。 例句：The development of technology has changed our life a lot. （科技的发展极大地改变了我们的生活。） 1. The __________（develop）of AI is very fast now. 2. China is a ___________（developing/developed）country. 3. 翻译：教育的发展对国家至关重要。 development developing The development of education is crucial for a country. Then ask and answer the questions with a partner. What is the largest shark in the deep sea? The largest shark in the deep sea is the Greenland shark. where the deep sea begins why people are researching the deep sea which Chinese submersible dived deeper in the water than many others what deep-sea animals are like how everyone should protect the deep sea Listen and tick the topics they discuss. 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 “see”. Some can even create their own_______. 4. There is rubbish even at _____________ metres deep. Listen again. Complete the sentences with the facts from the conversation. ocean floor 2020 blind light 11,000 、 Let’s watch and think. What wonder of nature is it in the video? New drills 、 Read the conversation 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. 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 Exercise 1. The Yellow River is about 5,464 kilometres long. How do you read the number? A. five thousand four hundred and sixty-four B. five thousand and four hundred sixty-four C. five thousand four hundred sixty-four 2. 这栋公寓楼大约200米高。This apartment building is about 200 ____ ____. 3. 鄱阳湖是中国第二大湖。The Poyang Lake is ___ ____ ____ lake in China. 4. 世界上最大的沙漠是撒哈拉沙漠。 The _______ ______ in the world is the Sahara Desert. 5.我们必须不惜一切代价保护环境。 We must protect the environment ____ ____ ______. A meters high. the second biggest biggest desert at all costs 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。 Thank you for listening null 85133.555 85081.305 80927.43 Lavf59.27.100 Packed by Bilibili XCoder v2.0.2 $