Unit 4 Section A 1a -2d 课件2025-2026学年人教版英语八年级下册

Section A (1a-2d) The Wonders of Nature Unit 4 Learning Objectives 1. 能识别两段听力的场景（游戏秀/讲座问答），抓住核心话题与关键信息; 掌握自然奇观与深海探测词汇，会用形容词最高级和大数字描述地理之最; 能读懂海洋深度信息图，并用 What's the ...est...? How high/deep is it? 等句型开展对话。 2. 了解世界自然奇观与中国“奋斗者号”深海成就，拓展地理认知，增强民族自豪感; 认识深海污染问题，树立保护海洋、敬畏自然的环保意识。 3. 学会梳理听力问答逻辑，区分泛听与精听任务; 对深海探索保持好奇，主动提问并探究，形成正确的自然观。 4. 掌握听前预测、抓关键词、听后验证的听力策略; 能借助信息图、AI工具自主探究，提升合作表达能力。 In this unit, you will： 1. talk about geography facts about natural wonders. 谈论有关自然奇观的地理事实。 2. compare facts about famous places. 比较有关著名景点的信息。 3. share geography facts using large numbers. 使用大数字来分享地理事实。 4. explore how and why people connect with nature. 探究人们与大自然建立联系的方式及原因。 /'wʌndə(r)/ n.奇观/v.想知道 3 Look and share 1. Do you know the name of the waterfall in the photo? 2. What do you think is special about it? Yes, it's Victoria Falls(维多利亚瀑布). It's one of the largest waterfalls in the world, with a wide curtain(幕)of water. How do we connect with nature? Big Question 我们如何与大自然建立联系？ 4 What other natural wonders do you know? What do you know about them? Pre-listening Match the places with the pictures. 1a ___ Nile River ___ Angel Falls ___ Mount Qomolangma ___ Dead Sea ___ Sahara Desert ___ Mariana Trench /naɪl/ /'eɪndʒl/ /'tʃəʊməʊ,lɑːŋmə/ /sə'hɑːrə/ /,mæri'ænə/ /trentʃ/ F A D C E B 安赫尔瀑布 珠穆朗玛峰 死海 撒哈拉沙漠 马里亚纳海沟 尼罗河 What is amazing about these places? 6 What is the name of this natural wonder? It’s Mount Qomolangma. How high is it? It’s 8,848.86 metres high. What is special about it? It’s the highest mountain in the world. It’s still growing taller. eight thousand eight hundred and forty-eight point eight six How can we read large numbers? 2 506 112 375 . 53 How can we read large numbers? 2 506 112 375 ①先从右至左数,每三位 数加一个逗号.(先忽略 小数点及后面部分) , , , ②第一个逗号代表thousand(千), 第二个逗号代表 million(百万), 第三个逗号代表billion(十亿). thousand 千 million 百万 billion 十亿 two billion, five hundred and six million, one hundred and twelve thousand, three hundred and seventy-five, . 53 ③point+小数 点后逐个读 point 点 point five three How can we read large numbers? 9,883 65,359 60,263,150 nine thousand, eight hundred and eighty-three sixty-five thousand, three hundred and fifty-nine sixty million, two hundred and sixty-three thousand, one hundred and fifty 150,235,796.583  one hundred and fifty million, two hundred and thirty-five thousand, seven hundred and ninety-six point five eight three 356,134,178.05 three hundred and fifty-six million, one hundred and thirty-four thousand, one hundred and seventy-eight point zero five 注意: ① 英语中没有“万”这个单位,要表示“万”须借用“千”表示(ten thousand),“十万”用“百个千”表示(one hundred thousand)。 ② hundred 后通常加连词 and。若读数中百位数为 0,则在 thousand 后加 and。 1b Listen to the game show. Complete the descriptions of the places. Place Description Measurement Mount Qomolangma the _______________ in the world ________ metres high Sahara Desert the _______________ in the world about _____________ square kilometres in size Dead Sea the ________________ on earth _________ metres below sea level Mariana Trench the ______________ in the ocean about _________ metres deep Superlative forms of adjectives TIPS 听主旨大意，重点 关注描述性最高级词汇 highest mountain biggest desert lowest place deepest point Check like this: Mount Qomolangma is the highest mountain in the world. It is 8,848.86 metres high. on earth 在地球上 Read the numbers, then listen again. Complete the measurements. 1c Place Measurement Mount Qomolangma ________metres high Sahara Desert about ________ square kilometres in size Dead Sea ________metres below sea level Mariana Trench about________metres deep 8,848.86 9,000,000 416 11,000 Learning tip: 长、宽、高、深、面积的表达方法: 基数词 + 单位词 + 形容词（long, wide, high, deep等）/介词短语（in size, below sea level等） TIPS 精听，边听边记录关键数据，用逗号三位一隔 平方千米 拓展：square metres 平方米 in size 在尺寸上；在大小方面 below sea level 低于海平面 416 8,848.86 11,000 9,000,000 Numbers / bɪˈləʊ/ prep. 在...下面 /ˈlev(ə)l/ n.高度; 水平;程度 Listen and check Highlight用高光笔标记the key information. Host: Welcome to our game show! Today, it’s all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world? Fu Xing: It’s Mount Qomolangma! Host: Correct! How high is it? Liu Hongyu: I know this——it’s 8,848.43 metres high. Host: No, sorry. Fu Xing? Fu Xing: Is it 8,848.86 metres? Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world. Fu Xing: The Taklimakan Desert? 抓取关键信号词并锁定答案 警惕干扰项 13 Listen and check Highlight the key information. Host: Wrong! Ella? Ella: It’s the Sahara Desert. Host: Right! Now, how big is it? Ella: It’s about 9,000,000 square kilometres. Host: That’s right! What’s the lowest place on earth? Liu Hongyu: It’s the Dead Sea! Host: Well done! Its surface is 416 metres below sea level. Now where’s the deepest point in the ocean? Fu Xing: It’s in the Mariana Trench. Host: That’s correct! How deep is it? Fu Xing: It’s about 11,000 metres deep. Host: Correct! 锁定题干信息 长数据高效记录 避免数据遗漏，一些数据可能来自于主持人 1.警惕干扰选项 2.高效记录细节 3.抓住逻辑信号词 细节题听力技巧： 14 Host: Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world? Fu Xing: It's Mount Qomolangma! Host: Correct! How high is it? Liu Hongyu: I know this—it's 8,848.43 metres high. Host: No, sorry. Fu Xing? Fu Xing: Is it 8,848.86 metres? Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world. Fu Xing: The Taklimakan Desert? Host: Wrong! Ella? 游戏节目 这是关于地理的(内容) 尽快 世界上最高的山 它有多高？(询问高度) ……米高(表达高度) 说出世界上最大的沙漠(这里的name是动词) Ella: It's the Sahara Desert. Host: Right! Now, how big is it? Ella: It's about 9,000,000 square kilometres. Host: That's right! What's the lowest place on earth? Liu Hongyu: It's the Dead Sea! Host: Well done! Its surface is 416 metres below sea level. Now where's the deepest point in the ocean? Fu Xing: It's in the Mariana Trench. Host: That's correct! How deep is it? Fu Xing: It's about 11,000 metres deep. Host: Correct! 平方公里(面积单位) 地球上最低的地方 它的表面在海平面以下……米。(描述海拔) 海洋中最深的点 它有多深？(询问深度) ……米深(表达深度) Host: Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world? Fu Xing: It's Mount Qomolangma! Host: Correct! How high is it? Liu Hongyu: I know this—it's 8,848.43 metres high. Host: No, sorry. Fu Xing? Fu Xing: Is it 8,848.86 metres? Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world. Fu Xing: The Taklimakan Desert? Host: Wrong! Ella? Ella: It's the Sahara Desert. Host: Right! Now, how big is it? Ella: It's about 9,000,000 square kilometres. Host: That's right! What's the lowest place on earth? Liu Hongyu: It's the Dead Sea! Host: Well done! Its surface is 416 metres below sea level. Now where's the deepest point in the ocean? Fu Xing: It's in the Mariana Trench. Host: That's correct! How deep is it? Fu Xing: It's about 11,000 metres deep. Host: Correct! What did the host ask about? The highest mountain Height The biggest desert size The deepest point Depth the lowest place What/Where is the + superlative + in/on...? How + high/big/deep + is it? Analyze How did the host ask about world records? How did the host ask about measurement? 1.Answer as quickly as you can! as ... as sb. can =as … as possible “尽可能……” 2.What is the highest mountain in the world? What is the biggest desert in the world? What is the lowest place on Earth? Where is the deepest point in the ocean? 形容词最高级用法 构成：单音节词：high → highest, big → biggest, low → lowest, deep → deepest 多音节词：interesting → the most interesting 规则：最高级前必须加 the：the highest mountain, the biggest desert 常与表示范围的短语连用：in the world, on Earth, in the ocean Language points 1. good /well _______ 2. comfortable ________________ 3. big _______ 4. happy ________ 5. cheap ________ 6. many _______ 7. difficult ______________ 8. little _____________ 9.great _________ best most comfortable biggest happiest cheapest most most difficult least greatest 写出下列单词的最高级。 Exercise A: How high is it? B: It's about 8,848.86 metres high. A: How big is it? B: It's about 9,000,000 square kilometres in size. A: How low is it? B: Its surface is 416 metres below sea level. A: How deep is it? B: It's about 11,000 metres deep. 疑问词 How + 形容词：用于询问事物的属性或程度，如高度、大小、深度等。 回答时常用 数词 + 单位 + 形容词 或 介词短语 来表达具体信息： Language points Host: Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Question one: What is the highest mountain in the world? Fu Xing: It's Mount Qomolangma! Host: Correct! How high is it? Liu Hongyu: I know this—it's 8,848.43 metres high. Host: No, sorry. Fu Xing? Fu Xing: Is it 8,848.86 metres? Host: Yes! But some scientists say Qomolangma is still growing taller! Now, name the biggest desert in the world. Fu Xing: The Taklimakan Desert? Host: Wrong! Ella? Ella: It's the Sahara Desert. Host: Right! Now, how big is it? Ella: It's about 9,000,000 square kilometres. Host: That's right! What's the lowest place on earth? Liu Hongyu: It's the Dead Sea! Host: Well done! Its surface is 416 metres below sea level. Now where's the deepest point in the ocean? Fu Xing: It's in the Mariana Trench. Host: That's correct! How deep is it? Fu Xing: It's about 11,000 metres deep. Host: Correct! If the answer was right, what did the host say? Analyze If the answer was wrong, what did the host say? Because the game show is fast-paced. Short words can judge answers quickly and keep the show going. Why do you think the host only uses short words, not long sentences, to judge their answers? Talk about the places you have learnt about. 1d Post-listening A: What’s the lowest place on earth? B: It’s ... A: How low is it? B: Its surface is ... metres below sea level. A: Now, what’s ... Useful expressions 22 Talk about the places you have learnt about. 1d It’s the __________. What’s the lowest place on earth? How low is it? Its surface is 416 metres ________ sea level. Now, what’s the _________ mountain in the world? It’s Mount Qomolangma. How high is it? It’s 8,848.86 metres _______. Dead Sea below highest high 23 Language points 教材 P31 单元标题 1. The Wonders of Nature 自然奇观 练习：1）Qomolangma is one of the most amazing natural __________ (wonder) in the world. 2）我们想知道里海有多深。 We _________ how deep the Caspian Sea is. wonders wonder wonder n.奇观；惊叹 the Seven Wonders 七大奇迹 v. 琢磨；想知道(=want to know)；感到诧异 I wonder + 疑问词 (what/who/how/if) +句子 拓展： wonder ==> wonderful ==> wonderfully 24 Language points 教材 P32 1b 2. _____ metres high 物体长、宽、高、深等的表达法 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） 练习：The building is about 200 metres high. （改为同义句） → The building is about 200 metres ______ ________. in height 25 教材 P32 1b Language points 3. 416 metres below sea level 低于海平面416米 e.g. Please don’t stand below that bridge. 请不要站在那座桥下面。 e.g. It was three degrees below zero this morning. 今天早晨的温度是零下三度。 below （1）【介词】在……下面 （2）【介词】低于 （3）【副词】在下面；低于 不强调垂直的“下面 e.g. From the top of the mountain, I could see the village below. 从山顶上我可以看到下面的村庄。 below 表示在某物的下方， 但不一定是在正下方， 反义词是above Write the answers below each question. 把答案写在每个问题的下面。 under 表示在某物的正下方，反义词是over The farmer is standing under the tree. 那个农民正站在树下。 26 教材 P32 1b Language points 3. 416 metres below sea level 低于海平面416米 （1）【名词】高度 搭配：sea level 海平面 （2）【名词】水平；程度 常与介词of连用。 a high/low level 高/低水平 e.g. As long as we keep working, we will achieve higher levels. 只要我们继续努力，我们会达到更高的水平。(河北中考) e.g. The mountain is over 3,000 metres above sea level. 这座山海拔3 000 多米。 练习：The Dead Sea is the ________ (low) place on the Earth, sitting 430 meters ________ sea level. lowest below 27 教材 P32 1c Language points 4. B: Its surface is… metres below sea level. 它的表面低于海平面....米。 e.g. Nearly 10% of the earth’s surface is covered by ice. 地球表面将近10% 被冰覆盖。 e.g. On the surface, it seems to be my fault. 表面上看，这似乎是我的过错。 练习：地震是地球表面的突然震动。 A(n) earthquake is a sudden shaking of the earth’s __________. surface surface n. 表面；表层 当指“水面”或“液面”时，常用单数形式。 拓展：on the surface 表面上；从外表看；乍一看 28 What do you know about the deep sea? 2a Pre-listening dark cold silent high pressure dangerous 29 While-listening Complete the sentences with the information from the picture. 2a 1. Fendouzhe reached ______________. 2. The deep sea begins at ______________. 3. The Titanic rests at ______________. 4. A whale can dive to ______________. /taɪ'tænɪk/ D A C B 30 A class is asking a deep-sea researcher some questions after his talk. Listen and tick the topics they discuss. 2b 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 /səb'mɜːsəbl/ n. 潜水艇 deep-sea adj. 深海的 信号词可以帮助快速定位 31 Read and predict. What can be filled in the blanks? 2c 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. dive into 潜入 特殊能力 深海相关的名词(短语) 年份/地点 表感官缺陷的形容词 视觉相关的名词(短语) 具体的数据 32 Listen again. Complete the sentences with the facts from the conversation. 2c 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. ocean floor 2020 blind light 11,000 Tip:单词（短语）/数字过长时可先简写速记，后续补充完整 33 Listening tasks Listen and fill. Then follow and check. Ms Gao: Thank you for the wonderful talk, Mr Jones. Now, does anyone have any questions? Emma: I do! Why are so many countries ____________ the deep sea? Mr Jones:Well, curiosity is one reason. We don’t know enough about the ocean floor. Fu Xing: I remember that in 2020, China’s Fendouzhe _______ deeper ______ the Mariana Trench than many other submersibles in the world and filmed it. But I didn’t see any deep-sea animals. What are they like? Mr Jones: Well, many deep-sea animals are large and _________. Some animals are blind, but they can “see” as well as others. Some even create their own light! 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! researching dived into unusual shocked 34 Ms Gao: Thank you for the wonderful talk, Mr Jones. Now, does anyone have any questions? Emma: I do! Why are so many countries researching the deep sea? Mr Jones: Well, curiosity is one reason. We don't know enough about the ocean floor. Fu Xing: I remember that in 2020, China's Fendouzhe dived deeper into the Mariana Trench than many other submersibles in the world and filmed it. But I didn't see any deep-sea animals. What are they like? 为……而感谢你(用于感谢) 精彩的演讲/谈话 有人有问题吗？ 研究深海 好奇心是一个原因 海底 潜入……更深的地方 film it 拍摄它 深海动物 Mr Jones: Well, many deep-sea animals are large and unusual. Some animals are blind, but they can "see" as well as others. Some even create their own light! 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 shocked many people. Ms Gao: That's terrible! We should do something about it. Mr Jones: You're right! 体型大且不寻常的 be blind 失明的;瞎的 和...一样 制造它们自己的光 关于深海的令人惊讶的事实 shock sb 使某人震惊 Read the questions and think of more you would like to ask the deep-sea researcher. 2d 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? the bottom of... ......的底部 It’s the whale shark. It’s dark, freezing, and has high pressure. There are also many unique creatures. Because the deep sea has unique(/juˈniːk/adj. 独特的)species(/ˈspiːʃiːz/n. 物种)for research, holds important resources, and can help control our climate. 37 Then ask and answer the questions with a partner. 2d The temperature in most deep-sea areas is about -1℃-4℃, and gradually decreases with increasing depth. What is the temperature in the deep sea? What can we do to protect the deep sea in daily life? We can reduce plastic use, save water, support sustainable seafood, and spread awareness of ocean protection. 38 Language points 教材 P33 2a 5. OCEAN DEPTHS depth n.深（度）；纵深 形容词形式：deep 深的；有……深的 e.g. We found water at a depth of 20 metres. 我们在20 米深处找到了水。 拓展：询问某物的深度时，常用句型“What’s one’s depth?” 或“What’s the depth of...?”，相当于“How deep is/are...?”。 e.g. What’s the depth of the lake here? = ______ _______ is the lake here? 这儿的湖水有多深？ How deep 39 Language points 教材 P33 2a 6. A whale can dive to over 2,000 metres. 鲸鱼可以下潜至2000多米。 dive v./n. 潜水；跳水；俯冲 过去式：dived/dove, 过去分词：dived （1）【动词】潜水；跳水；俯冲 dive down 潜入; 俯冲 dive into 跳入 （2）【名词】潜水；跳水；俯冲 e.g. He made a beautiful dive. 他做了个漂亮的跳水动作。 e.g. The whale dove to deeper water. 那头鲸潜入了更深的水城。 The falcon dived down and caught the little bird. 猎鹰俯冲下来抓住了那只小鸟 练习：She dived ________ the river to save the drowning child. into 40 Language points 教材 P33 2c 7. Some animals have unusual abilities. 有些动物拥有非凡的能力。 e.g. Tan Dun is an unusual man with great musical talent. 谭盾是一个与众不同的人，他有着非凡的音乐天赋。(南通中考改编) It's unusual for the trees to flower so early. 这种树这么早开花很少见。 拓展： usual adj. 通常的；寻常的 （反义词）unusual adj. 特别的；不寻常的；罕见的 usually adv. 通常地；一般地 unusually adv. 不寻常地 unusual adj. 特别的；不寻常的 由“un-（否定前缀）+ usual (adj.通常的）”构成。 unusual的发音以元音音素开头，其前有不定冠词时，用an。 41 Language points 教材 P33 2d 8. What is the bottom of the deep sea like? 深海底部是什么样子的？ e.g. What is there at the bottom of the deep sea? 深海底部有什么？ They cleaned the house from top to bottom before the Spring Festival. 春节前，他们把房子彻底打扫了一遍。 练习：我在河底发现了一些奇怪的东西。 I found something strange ___________________ the river. at the bottom of bottom n.底部；最下部 反义词：top 顶部；顶端 (at) the bottom of（在）……的底部 from top to bottom 从上到下；彻底地 from the bottom of one's heart 由衷地，从心底里 42 Exercises 1. The diver went b_________ the boat to check the ropes under the water. 2. The tables' s_________ were very clean. 3. The water l_________ in the pool rose after the heavy rain. 4. Sally ___________ /rɪ'sɜːtʃ/ many books before she wrote her report. 5. They found a strange stone at the _________ /'bɒtəm/ of the lake. I. 请根据所给的首字母或音标写出单词。 elow urfaces evel researched bottom 43 Exercises II. 用括号中所给单词的适当形式填空。 1. The __________ (deep) of the lake is hard to measure. 2. It is __________ (usual) to see snow in China in the summer. 3. This hill is the __________ (low) one in our neighbourhood. It is only 1 metre high. 4. Children have many different __________ (ability ) to learn new things. 5. The coach ____________ (dive) into the pool to show us how to do it correctly yesterday. depth unusual lowest abilities dived/dove 44 Exercises III. 根据汉语提示完成句子（每空一词）。 1. 在地球上，笑容是最美的语言。 A smile is the most beautiful language ________ ________. 2. 桂林的漓江是中国著名的自然奇观之一。 The Li River in Guilin is one of the famous __________ __________ in China. 3. 昨天他们在城市附近的海中看到一艘大型的中国船只。 They saw a large __________ ________ in the sea near the city yesterday. 4. 这个小岛只有五平方千米。 The small island is only five __________ ___________. on earth natural wonders Chinese vessel square kilometers 45 Summary We learn: 1. Vocabulary: wonder, desert, measurement, square kilometre, below, level, sea level, surface, depth, dive, submersible, unusual, bottom... 2. Sentence Patterns: "What's the ... in the world? / It's ... / It's ... metres high/deep/below sea level." 3. Listening Skill: Extract key information (descriptions, measurements) from listening materials about natural wonders. We can: talk about amazing natural wonders and the deep sea with new words and phrases, and express ideas about ocean protection. 46 1. 基础层：背诵今天学的12个生词+短语；背诵1d的2组对话。 2. 提高层：用所学句型写5句话，比较两个自然奇观（如珠峰 vs 马里亚纳海沟）,要包含测量数据。 3. 拓展层：设计一张海报：“Save the Deep Sea”（拯救深海）。 要求包含3个事实和1句口号，至少使用5个本节课的生词。 Homework Must-do Choose-to-do 47 101435.555 null 18528.0 null 97647.43 $