Unit4SectionA(1a-2d)课件 2025-2026学年人教版英语八年级下册

? BIG Question How do we connect with nature? P31 1. Do you know the name of the waterfall in the photo? 2. What do you think is special about it? It's Victoria Falls (维多利亚瀑布). 3. What other natural wonders do you know? It’s special for its immense width (about 1,708 meters) and height (about 108 meters), creating a breathtaking scene. Nile River 尼罗河 Angel Falls 安赫尔瀑布 Mount Qomolangma 珠穆朗玛峰 Dead Sea 死海 Sahara Desert 撒哈拉沙漠 Mariana Trench 马里亚纳海沟 In this unit, you will 1. talk about geography facts about natural wonders. 2. compare facts about famous places. 3. share geography facts using large numbers. 4. explore how and why people connect with nature. Section A What is amazing about nature? Listening (1a-2d) have a general understanding of how to describe places using measurements and superlative forms. be able to talk about the features and measurements of the natural wonders you have learnt about. listen for specific details about natural wonders in the conversation. In this part, you will 1a Match the places with the pictures. ___ Nile River ___ Angel Falls ___ Mount Qomolangma ___ Dead Sea ___ Sahara Desert ___ Mariana Trench P32 A B C D E F Listen to a game show and circle the places mentioned . What do you know about these places? Can you describe them? Listen to the game show. Complete the descriptions of the places. Tips: 听时注意关键词 Place Description Mount Qomolangma the ________ in the world Sahara Desert the ________ in the world Dead Sea the ________ on earth Mariana Trench the ________ in the ocean highest biggest lowest deepest 1b P32 Read the numbers first. 1c 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 highest biggest lowest deepest 416 8,848.86 9,000,000 416 11,000 P32 Listen again. Complete the measurements with the numbers below. nine million eleven thousand four hundred and sixteen eight thousand eight hundred and forty-eight point eight six n. 数量；测量 ……米高 平方千米 在大小上 海平面以下 ……米深 8,848.86 11,000 9,000,000 ① 1—12: (one, two, three, four, five, six, seven, eight, nine, ten, eleven, twelve) ② 13—19: -teen (thir-, fif-, eigh-) ③ 20—90: -ty (twen-, thir-, for-, fif-, eigh-) ④ 21—99: 十位 _ 个位 ⑤ 100, 200, ... 900: _______ hundred ⑥ 101—999: _______ hundred and __ 个位 十位 __ _ 个位 ⑦ 多位数: ______ billion (十亿), ______ million (百万), _____ thousand, ______ hundred and 个位 十位 __ _ 个位 __ 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! “the + 形容词 / 副词最高级”后面可用带有 of 、in、on 的短语等来说明比较的范围，意为“……在……中最……”。 Useful expressions: 主语+谓语(+the)+最高级+ in/of/among短语. 1d Talk about the places you have learnt about. P32 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 ... 2a What do you know about the deep sea? Complete the sentences with the information from the picture. P33 1. Fendouzhe reached ____. 2. The deep sea begins at ____. 3. The Titanic rests at ____. 4. A whale can dive to ____. v. & n. 潜水；跳水；俯冲 B D C A 通常认为，深度超过 2,00 米 的海域属于深海区域。在这一深度以下，光照几乎消失，水压极大，环境与浅海截然不同，孕育着许多适应极端环境的特殊生物，也有着独特的地质结构。 有些鲸鱼，例如柯氏喙鲸，能够下潜到深海区域，其最深下潜记录可达约 2,992 米 。鲸鱼的这种深潜能力是为了觅食等生存需求，它们在深海的活动也反映了深海生态系统中生物的多样性和适应性。 著名的泰坦尼克号邮轮在 1912 年沉没于北大西洋，其残骸位于约 3,800 米 的深海处。这一深度的海底环境使得泰坦尼克号的残骸保存状况具有独特的研究价值，也让人们对其沉没的历史事件有了更多的探索线索。 “奋斗者” 号是中国自主研发的全海深载人潜水器，它成功下潜至马里亚纳海沟 10,909 米 处，这一深度彰显了中国在深海探测领域的先进技术，也为人类探索深海奥秘、开展深海科学研究提供了重要支撑。 A class is asking a deep-sea researcher some questions after his talk. Read the questions first. P33 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 Listen and tick the topics they discuss. v. & n. 研究；调查 n. 潜水艇 Listen again. Complete the sentences with the facts from the conversation. P33 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 “_________”. Some can even create their own __________. 4. There is rubbish even at _________ metres deep. deep sea 2020 blind 11,000 see light 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? 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! “形容词 / 副词比较级 + than”表示两者（人或事物）的比较。 “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。 Which of them shocked you the most? 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! 尽可能快地 Read and pay attention to the underlined expressions. 多高 ……米高 多大 平方公里 做得好！ 低于海平面 多深 ……米深 Useful expressions: What is the highest mountain in the world? Name the biggest desert in the world. What's the lowest place on earth? Where's the deepest point in the ocean? How high is it? How big is it? How deep is it? Translate the expressions into English. 1. 尽可能快地 2. 多高/深/大 3. ……米高/深 4. 平方公里 5. 在大小上 6. 低于海平面 7. 做得好！ as quickly as you can how high/deep/big ... metres high/deep square kilometres in size below sea level Well done! 2d Read the questions and think of more you would like to ask the deep-sea researcher. 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? ● ... 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. 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. that are waiting to be uncovered. Nature hides countless wonders 1. The wonders of nature 大自然的奇迹 wonder n. ① The Grand Canyon is a wonder of nature. ② We use phones to shop online—this is one of the wonders of modern technology. 科罗拉多大峡谷是自然奇观。 ①奇观 a wonder of …… 的奇观 ① We looked at the Northern Lights in wonder. ② No wonder he looks so angry. 我们惊叹地望着北极光。 no wonder 难怪；不足为奇 难怪他看上去如此生气。 wonder n. ②惊叹 我们用手机网购，这就是现代科技的奇观之一。 in wonder 惊奇地 wonder v. ① I wonder where she went yesterday. ② She often wonders about life on other planets. ③ I wonder at his courage to face the difficulty. 我想知道她昨天去哪里了。 琢磨；想知道；感到诧异 她经常琢磨其他星球上的生命。 我对他面对困难的勇气感到诧异。 wonder about 琢磨；对…… 感到好奇 wonder at 对…… 感到诧异 / 惊叹 判断下列句子中 “wonder” 的词性，在括号内填入 “n.（名词）” 或 “v.（动词）”。 1. The Great Wall is a famous wonder in the world. ( ) 2. I wonder if we can finish the homework before dinner. ( ) 3. No wonder you look tired—you didn’t sleep well last night. ( ) 4. She stared at the starry sky in wonder. ( ) 5. We all wonder at his courage to face difficulties. ( ) 6. That ancient temple is a real wonder of architecture. ( ) n. v. n. n. v. n. ①奇观 ②惊叹 ②惊叹 ①奇观 2. Why are so many countries researching the deep sea? 为何有如此多的国家在研究深海？ research v. I need to research pandas for my biology homework. 我需要为我的生物作业研究大熊猫。 研究；调查 research n. ① Our research about daily exercise is almost done. ② Students are doing research on local traditions. ③ The team will carry out research on new energy cars next year. 我们关于日常运动的调查快完成了。 研究；调查 学生们正在研究当地的传统。 该团队明年将开展新能源汽车的研究。 do research (on/into sth.) 对…… 进行研究/调查 carry out research 开展研究 3. I know this—it's 8,848.43 metres high. 我知道这一点——它有8848.43米高。 数字+单位+long, wide, tall/high, deep ... ① The small garden is 12 square metres wide. ② The highway is 200 kilometres long. ③ The mountain is 2,000 metres high. ④ That apple tree is 5 metres tall. ⑤ The lake is 15 metres deep. 这个小花园12平方米宽。 这条高速公路200千米长。 这座山2000米高。 那棵苹果树5米高。 这个湖15米深。 …… 长/宽/高/深 根据提示填空。 The Victoria Falls is ____________ (…… 的奇观) Africa. It’s about 1.7 kilometres wide and ___________________ (超过100米高). ___________ (难怪) it attracts millions of tourists — you’ll ___________ (对…… 感到惊叹) its power when you see the water fall. We should protect this natural treasure when we _______________ (对…… 进行研究) it. a wonder of over 100 metres high do research on No wonder wonder at as quickly as you can how high/deep/big ... metres high/deep square kilometres in size below sea level Well done! 1. Can you match the natural places with their pictures and describe them with correct measurements? 2. Can you understand the content about the deep sea? 3. Can you talk about natural wonders? Can you ask and answer questions about the deep sea? You must do: Recite the new words and phrases. You choose to do: Research another natural wonder and make a short presentation about its features and measurements. Share it with your class! Other 95975.43 null 97647.43 null 85133.555 null 80979.68 $