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

该初中英语课件围绕“自然奇观”主题，涵盖自然景观词汇、地理事实描述、形容词最高级及大数字表达等核心知识。课堂通过主题图识别景观导入，结合单元大问题引发兴趣，学习支架从识别景观到列举奇观，再到用最高级和大数字描述，层层递进。 其亮点在于融合语言能力与思维品质，通过游戏化听力对话（如地理知识问答）和任务型活动（匹配图片、完成测量表格）提升听说能力，设计“世界之最”比较及“Why humans care about 'the highest'...”探究问题培养分析能力。文化意识方面涵盖中外自然奇观，增强对自然的敬畏。小结系统归纳数字读法和最高级规则，帮助学生构建知识体系，既提升学生跨学科认知和语言运用能力，也为教师提供结构化教学资源，提高教学效率。

学习目标 能够识别主题图中的景观,了解该景观的基本信息,并理解主题图与单元主题之间的联系。 能列举一些世界著名的自然景观,从而对本单元的主题建立初步认知,并积累一些基础的话题词汇。 能够理解单元标题的含义,并结合单元标题和主题图,简单分享对单元大问题的理解。 能够读懂单元学习内容导引中列举的条目,对本单元的主要学习内容和主题意义探究方向形成总体认识,对后续学习产生兴趣和期待。 Section A 单元主题: 人与社会 人与自然 单元子主题: 身份认同与文化自信 不同地区的生态特征与自然景观; 热爱与敬畏自然,与自然和谐共生; 环保意识和行为 wonder: n. 奇观;惊叹 v. 琢磨;想知道 1. Do you know the name of the waterfall in the photo? It is Victoria Falls on the Zambezi River in southern Africa. 2. What do you think is special about it? I think it is large and wide. It’s one of the natural wonders in the world. 3. What other natural wonders do you know? Yangtze River, the Great Wall, Mount Qomolangma, ... /z m bi:zi/ / n t r l w nd z/ wonder: n. 奇观;惊叹 v. 琢磨;想知道 In this unit, you will talk about geography facts about natural wonders. 谈论有关自然奇观的地理事实 compare facts about famous places. 比较著名景点的相关事实 share geography facts using large numbers. 用大数分享地理事实 explore how and why people connect with nature. 探究人们与大自然建立联系的方式 和原因 Section A What is amazing about nature? Section A 1a-1d 听说课 学习目标 能够判断听力对话的场景和人物的身份,并理解对话的主题及谈到的自然奇观。 能够听辨出描述不同“地理之最”的形容词最高级和大数字,在语境中巩固形容词最高级的用法,并熟悉大数字的表达法。 能够模仿听力录音,与同伴就地理之最的话题开展对话,并尝试用大数字准确描述这些自然景观的面积、高度、深度等。 能够丰富对世界地理的认知,利用跨学科知识助力英语学习。 Nile/na l/ river 尼罗河 Angel Falls 安赫尔瀑布 / e nd l f lz/ Mariana Trench 马里亚纳海沟 / m ri n trent / the deepest trench in the ocean Mount Qomolangma (珠穆朗玛峰) /ma nt t m l m / the highest mountain in the world Dead Sea (死海) the lowest place on earth Sahara Desert(撒哈拉沙漠) /s h r dez t/ the biggest desert in the world Match the places with the pictures. 1a _Nile River _Angel Falls _Mount Qomolangma _Dead sea _Sahara Desert _Mariana Trench F A D C E B A B C D E F /na l/ / t m l m / / e nd l/ /s h r / / m ri n trent / What is amazing about each place? Listen to the game show. Complete the descriptions of the places. Place Description Measurement Mount Qomolangma the _ in the world _ meters 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 平方千米 低于海平面 n. 数量;测量 1b 1b Listen to the game show. Complete the descriptions of the places. 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 mountain biggest desert lowest place deepest point What do they have in common? Mount Qomolangma is the highest mountain in the world. the + 最高级 + 介词短语 8,848.86 / t m l m / /s h r / / m ri n trent / 形容词 / 副词最高级变化规则 high— highest low — lowest deep —deepest 一般情况下,在词尾加-est large — largest fine — finest 以不发音字母e结尾的词,在词尾加-st heavy — heaviest easy — easiest early — earliest 以“辅音字母 + y”结尾的双音节词,先把y改为 i ,再加-est 形容词 / 副词最高级变化规则 big — biggest fat — fattest thin — thinnest 重读闭音节词词尾只有一个辅音字母时,先双写该辅音字母,再加-est beautiful — most beautiful interesting — most interesting delicious — most delicious 多音节词和部分双音节词在词前加most 不规则变化 原级 最高级 good / well best bad / badly worst many / much most little least far farthest furthest Good, Better, Best Good, better, best, Never let it rest, Till good is better, And better is best. Bad, worse, worst, Never fight against, Get better and better, And you’ll be the best. 1)1-12, 独立成词。 one two three four five six seven eight nine ten eleven twelve 2)13-19, 由3-9 + teen构成。 14–fourteen 16-sixteen 17-seventeen 19—nineteen 特殊拼写: 13– thirteen 15-fifteen 18—eighteen 3)20-90, 以-ty结尾。 20—twenty 30-thirty 40—forty 50—fifty 60-sixty 70-seventy 80-eighty 90—ninety Review 4)21-99, 两位数,十位与个位之间有 “-”。 21 twenty-one 55 fifty-five 99 ninety-nine 5)101—999,三位数,百位与十位/个位之间加and。 101 one hundred and one 840 eight hundred and forty 693 six hundred and ninety-three Review 百 百万 千 十亿 two billion ,sixty-five million, six hundred and nine thousand, nine hundred and eighty point three four. 点 billion million thousand hundred point 2, 065, 609, 980. 34 billion million thousand point three four and How to read large numbers? 416 8,848.86 11,000 9,000,000 416: 8,848.86: 11,000: 9,000,000: four hundred and sixteen eight thousand,eight hundred and forty-eight point eight six eleven thousand nine million 三位数及以内的数字直接按数字本身进行读写; 三位数以上的数字从右往左,每三位用逗号分隔,形成分级单位: e.g. 1, 234, 567, 891. 02 百位和十位中间加and;小数点读作point, 小数点后的数字逐个单独读出 billion million thousand point and zero two Try to read the following numbers. 416 four hundred and sixteen 8,848.86 eight thousand eight hundred and forty-eight point eight six 11,000 eleven thousand 9,000,000 nine million 416 8,848.86 11,000 9,000,000 1c 1c Listen again. Complete the measurements with the numbers below. 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 km2 平方千米 海平面 基数词 + 单位词 + 形容词(long, wide, high, deep等) /介词短语(in size, below sea level等) 长、宽、高、深、面积的表达方法 Listen again. Complete the measurements in 1b with the numbers below. Place Description Measurement Mount Qomolangma the highest mountain in the world _ meters high Sahara Desert the biggest desert in the world about _ square kilometres in size Dead Sea the lowest place on earth _ metres below sea level Mariana Trench the deepest point in the ocean about _ metres deep 8,848.86 9,000,000 416 11,000 平方千米 低于海平面 n. 数量;测量 1c / t m l m / /s h r / / m ri n trent / eight thousand,eight hundred and forty-eight point eight six Mount Qomolangma is the highest mountain in the world. It is 8,848.86 metres high. nine million four hundred and sixteen eleven thousand 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! 世界上最高的山是哪座? 它有多高? Section A, 1b and 1c Host: 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? 说出世界上最大的沙漠。 塔克拉玛干沙漠 地球上最低的地方是哪里? / t kl m k n/ 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! 海洋中最深的地方在哪里? Read and learn 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! Ask about natural wonders Ask about measurement Give feedback(反馈) Talk about the places you have learnt about. 1d A: What is _ in the world/ on earth/ in the ocean? B: It's _ . A: How high/ deep/ big/ low is it? B: It's _ high / deep/ square kilometres (in size) ... . It’s the Dead Sea. What’s the lowest place on earth? Its surface is 416 metres below sea level. How low is it? Now, what’s ...? ... Natural wonders Mount Qomolangma the highest Sahara Desert the biggest Dead Sea the lowest Mariana Trench the deepest 8,848.86 9,000,000 416 11,000 Summary Let’s summarize 英语中数字的读法遵循 “三位一组” 的原则,从右往左每三位用逗号隔开,每一组对应一个大单位。 thousand(千):第 1 组(右数 1-3 位) million(百万):第 2 组(右数 4-6 位) billion(十亿):第 3 组(右数 7-9 位) 例:9,000,000 读作 nine million 例:11,000 读作 eleven thousand 三位数内部读法 每组三位数(000-999)的读法遵循以下规则: 百位 + and + 十位 / 个位(英式英语),美式英语中 and 常省略。 例:123 one hundred (and) twenty-three 十位和个位之间用连字符 - 连接。 例:45 forty-five 例:789 seven hundred (and) eighty-nine Let’s summarize 以 123456789 为例,分组:从右往左三位一组 123, 456, 789 读每组: 123 one hundred (and) twenty-three 456 four hundred (and) fifty-six 789 seven hundred (and) eighty-nine 加单位:每组后加上对应的单位:123 million, 456 thousand, 789 整合:one hundred (and) twenty-three million, four hundred (and) fifty-six thousand, seven hundred (and) eighty-nine Let’s summarize 零的处理: 组内全为零时,该组及单位省略。 例:9,000,000 nine million(省略了后面的 000 thousand) 组内有零,按正常数字读出。 例:105 one hundred (and) five 例:5,020 five thousand (and) twenty Let’s summarize 单位词的单复数: 当 thousand, million, billion 等词前面有具体数字时,永远用单数。 eleven thousand eleven thousands 表示概数时,用复数 + of。 例:thousands of people(成千上万的人) Let’s summarize Summary Ask about natural wonders Talk about geography facts Give feedback (反馈) What is amazing about nature? • What’s the lowest / highest / biggest / deepest place in the world / on earth? • How low / high / big / deep is it? • Where’s ...? • It’s ... • It’s ... metres / kilometres (deep / high). It’s ... square kilometres (in size). • It’s in ... • Correct! / Right! • No, sorry./ Wrong. • That’s right/ correct! • Well done! / Thinking Why do you think humans are so excited about “the highest”, “the deepest” and “the biggest” things in nature? Because nature is so amazing. Because they show the great power of nature. Because people enjoy exploring and discovering new things. Because humans want to learn more about the world. Exercise 单词填空。 1. The Great Pyramid is a great _ (奇观) of the ancient world. 2. We need to get the exact _ (测量数据) of the room before buying the carpet. 3. The temperature today is five degrees _ (低于) zero. 4. The water _ (水平面) in the lake is rising because of the heavy rain. 5. The _ (表面) of the moon is covered with dust and rocks. 6. Mount Qomolangma is the _ (high) mountain in the world. 7. The Sahara is by far the _ (large) hot desert on Earth. 8. What’s the _ (deep) point in the ocean? — It’s the Mariana Trench. 9. Scientists use special tools for the _ (measure) of the trench’s depth. 10. We looked at the stars and _ (wonder) if there is life in space. wonder measurement below surface level highest largest deepest measurement wondered Exercise “世界之最”填空。 The Amazon Rainforest is one of the _ (large) tropical rainforests in the world. 亚马孙雨林是世界上最大的热带雨林之一。 The Nile River is the _ (long) river in the world. 尼罗河是世界上最长的河流。 Victoria Falls is one of the _ (beautiful) waterfalls on the planet. 维多利亚瀑布是地球上最美的瀑布之一。 The Great Barrier Reef is the _ (long) coral reef system in the world. 大堡礁是世界上长的珊瑚礁系统。 The Mariana Trench is the _ (deep) ocean trench in the world. 马里亚纳海沟是世界上最深的海沟。 largest longest most beautiful longest deepest -What’s the _ mountain in the world?(high) -It’s_. -How _is it ? /What's the _ of it ? -It's_. Qomolangma is _ in the world. =Qomolangma is higher _ in the world. high Qomolangma height highest 8,848.86 meters high /It’s 8,848.86 meters _. in height the highest mountain 8,848.86 meters high than any other mountain -What’s the _ desert in the world?(big) -It’s_. -How _is it ? /What's the _ of it ? -It's_. The Sahara Desert is _ in the world. =The Sahara Desert is bigger _ in the world. big the Sahara Desert size biggest 9,000,000 square kilometers in size the biggest desert than any other desert Lavf59.14.100 32000.264 $