Unit 4 Section A 3a-3C（同步课件）-【精品课】2025-2026学年八年级英语下册同步精品课件（新教材人教版）

Unit 4 The Wonders of Nature What is amazing about nature? Section A(3a-3d) Vocabulary & Grammar: Use key geography words (e.g., river, ancient civilizations) and superlatives (longest, farthest) to describe natural features. 01 Reading: Extract key facts (length, importance) about the Yellow River, Yangtze River, and Nile River from a conversation. Speaking: Role-play the dialogue and extend it to ask/answer about other Chinese geographical features (e.g., deserts, mountains). 02 Learning Objectives Culture: Understand the Yellow River as China’s “mother river” and the need to protect natural resources. 03 Welcome to our game show! Today, it's all about geography. Answer as quickly as you can! Let’s travel to explore the amazement about nature! What’s the highest mountain in the world? It’s the Mount Qomolangma . What’s the biggest desert in the world? It’s the Sahara Desert . What’s the longest river in the world? It’s the Nile. What’s the deepest point in the ocean? It’s the Mariana Trench. What’s the lowest place on earth? It’s the Dead Sea. How much do you know about rivers? Let’s have a quiz! Guess the river! I am called the “Mother River” of China. My water is yellow. Who am I? I am the longest river in China. I flow through many big cities. Who am I? I am the longest river in Africa. I helped build the pyramids. Who am I? (Yellow River) (Yangtze River) (Nile River) What do you think rivers give us? Why do we need to learn about them? Discuss and share your ideas. Rivers are the Lifelines of Civilizations. How much do you know about these three great rivers? Which rivers are in China? Which is in Africa? (Yellow River) (Yangtze River) (Nile River) Both of them play an important role in Chinese history, culture, transportation(交通) and agriculture(农业).They are symbols of ancient Chinese civilization. And they’re still very important today. What is the longest river in Asia? What is the second longest river in China? Nile River is the longest river in the world. It is about 6,650 kilometers long and runs through 11 countries in northeastern Africa, like Egypt and Sudan. For thousands of years, it has given people water and good soil for farming, so it is very important for life in this area. River Name Length Key Facts / Importance (with hints) Yellow River Known as China’s “______ river”; carries brown and yellow ______; the ______ longest in China. Yangtze River The ______ river in China; travels the _______ Nile River The longest river in ______; very important in ______’s history; helped develop________________ Can you fill in the River Information Worksheet Let’s check your answers after finishing today’s reading task. 1. What is the conversation mainly about? Great rivers 2.How many rivers are mentioned in the conversation? What are they? Three. They are the Yellow River, the Yangtze River, and the Nile River. 3.Does Ella know much about Chinese rivers at the beginning? How do you know? No, she doesn't. She thought the Yellow River might be the longest. 3a Read the conversation and underline the three rivers mentioned. Skim reading 1. What are the lengths of the three rivers? Fill in the table. River Name Length (km) Yangtze River ________ Yellow River ________ Nile River ________ about 6,300 km 5,464 6,671 Detail reading 2.Why is the Yellow River called the "Yellow River"? Find the exact sentence in the conversation. Detail reading 3.What do the Yellow River and the Nile River have in common according to Ella and Yaming? 4.At the end of the conversation, Ella says: "We should protect them by all means." Why does she say this? She says this because rivers are important for civilizations, history, and daily life, and they may face danger like pollution. Further thinking Yaming says the Yellow River is called the "mother river" of China. Why do you think people call a river "mother"? What does this tell us about the relationship between people and rivers? A river is called "mother" because it gives life to the people along it, just like a mother gives life to her children. It tells us that rivers are not just water – they are part of our identity and history. 3b What do Yaming and Ella know about these rivers? Read the conversation again and complete the table. River Country Length Importance Yellow River _______ ____________ km helped in the development of ancient ____ Nile River _______ ____________km China Africa about 6,300 6,671 civilizations River Name Key Facts / Importance (with hints) Yellow River Known as China’s “______ river”; carries brown and yellow ______; the ______ longest in China. Yangtze River The ______ river in China; travels the _______ Nile River The longest river in ______; very important in ______’s history; helped develop________________ 3c Listen to the conversation. Check your answer. Then role-play it. mother earth second longest farthest Africa Egypt ancient civilizations "Ella wants to learn more about China. What other geographical features can she ask about? Let's think together." Picture English "Superlative" in simple English 🏜️ Taklimakan Desert The largest desert in China 🏔️ Mount Qomolangma The highest mountain in the world / in China 🌊 Qinghai Lake The biggest inland lake and biggest saltwater lake in China 🌊 Yangtze River The longest river in China / in Asia 🏝️ Hainan Island The second largest island in China; the largest tropical island in China ⛰️ Huangshan Mountain One of China’s most famous and beautiful mountains 🌊 Poyang Lake The biggest freshwater lake in China 🏜️ Gobi Desert One of the largest deserts in Asia "Here are some famous geographical features in China. Let's learn their names." Discuss What other geographical features in China do you think Ella might want to ask about? If you were Yaming, what geographical features would you like to introduce to Ella? Ella is really interested in rivers and curious about China’s natural wonders. Mount Qomolangma Qinghai Lake Taklimakan Desert The Three Gorges Discuss Mount Qomolangma It is the highest mountain in the world, standing at 8,848.86 meters. It lies on the border between China and Nepal. It is a famous natural wonder and a popular place for mountain climbers. Discuss It is the largest inland saltwater lake in China. It is located in Qinghai Province, northwest China. It is famous for its clear blue water and beautiful natural scenery. Qinghai Lake Discuss It is the largest desert in China. It is in the Tarim Basin(塔里木盆地), Xinjiang. It has huge moving sand dunes(流动沙丘) and a very dry climate. Taklimakan Desert Discuss They are famous gorges on the Yangtze River. The Three Gorges Dam there is the world’s largest hydropower station(水电站). It is an important engineering wonder and a great place of interest. The Three Gorges 3d Imagine that you are Yaming or Ella. Continue the conversation with a partner about other geographical features in China. Sure! What would you like to know? Could you tell me more about China, Yaming? What's the biggest desert in China? It's the Taklimakan Desert. Do you know ...? Useful Expressions： Asking about "the best / biggest / longest" What’s the biggest desert in China? Which is the longest river in Asia? Do you know the highest mountain in the world? Where is the largest freshwater lake in China? What’s special about Hainan Island? Answering with superlatives It’s the largest desert in China. It’s the longest river in Asia. It’s the highest mountain in the world. It’s the biggest inland lake in China. It’s one of the most famous mountains in China. Adding extra details • It’s in the northwest of China. • It’s on the border between China and Nepal. • It’s very dry and has amazing sand dunes. • It’s a very beautiful place with many kinds of trees and rocks. 6,300 kilometres long表示“6 300千米长”，是“基数词+单位词+形容词”结构。 1.It travels the farthest and is about 6,300 kilometres long. 它流经的距离最远，约有6 300千米长。(教材 P34 3a) 物体长、宽、高、深等的表达 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) The river is 20 metres wide (= 20 metres in width). 这条河宽20米。 2. helped in the development of ancient civilizations 有助于古代文明的发展 (教材 P34 3b) [不可数名词]由“develop(v.发展)+-ment(名词后缀)”构成。 (with) the development of (随着)……的发展 We believe China will continue to lead the world in technology development. 我们相信，中国在科技发展方面将继续引领世界。 development n. 发展；壮大 Language Points 3. Both the Nile and the Yellow River helped ancient civilizations to develop. 尼罗河和黄河都促进了古代文明的发展。 学生们不但在操场上玩，也在教室里玩。 The students play both on the playground and in the classroom. 你和她都是学生。 Both you and she are students. (1) both...and... ……和……都；既……又…… 用来连接两个相同的句子成分，所连接的句子成分在句中可作主语、宾语、状语等。当连接两个名词或代词作主语时，谓语动词用复数形式。 Language Points 1. Both the Nile and the Yellow River helped ancient civilizations to develop. 尼罗河和黄河都促进了古代文明的发展。 两部电影都很感人。 Both movies are moving. 我们俩都更喜欢悦耳的音乐。 Both of us prefer smooth music. (2) both（反义词：neither两者都不） ① 形容词 两个；双方；两者都 后接复数名词。反义词 neither意为"两者都不"。 ② 代词 两个，两个都 常用于"both of+代词"或"both of+the/其他限定词+可数名词复数"结构中。both在句中作主语时，谓语动词用复数形式。 注意: both常位于连系动词be、助动词或情态动词之后，实义动词之前。 这俩男孩都来自农村。 Both of the boys are from the village. Language Points 4. We should protect them at all costs. 我们应用一切办法保护它们。 我们必须不惜一切代价保护这些河流。 We must protect the rivers at all costs. 我们应该不惜一切代价保证安全。 We should keep safe at all costs. at all costs 不惜一切代价,无论如何 介词短语,常位于句末,作状语 do sth at all costs 不惜一切代价做某事 must / should... at all costs 必须/应该不惜一切代价…… 4.helped the development of ancient ... 帮助了古代...的发展 development n. 发展；壮大 develop v. 发展 developed adj. 发达的；高度发展的 固定搭配 with the development of 随着……的发展 What are your plans for the development of your company? 你打算怎样来发展壮大自己的公司？ Language points 小红书：Christina在努力｜原创课件 更多教学资源可以关注分享～ 35 5. We should protect them by all means. 我们应该竭尽全力保护它们。 means n. ① Every possible means has been tried, but none worked. ② A bicycle is a convenient means of transport in the city. ③ You can solve this math problem by this means. ④ We should protect the nature by all means. 所有可能的办法都试过了，但都不起作用。 (pl. means) 方式；途径 自行车是城市里一种便捷的交通工具。 你可以用这种方法解决这道数学题。 我们应该竭尽全力保护自然。 a means of …… 的一种方式 by this means 用这种方法 by all means 无论如何 根据提示填空。 Reading is 1 ____________________ (……的一种重要方式) getting knowledge and having fun. To 2 ________ (养成) a good reading habit, you could start with books you like. 3 ____________ (用这种方法), you will find reading enjoyable. The 4 ___________ (发展) of your interest in reading is a slow process, so please be patient. And 5 _____________ (无论如何), don't forget to visit the library to find more interesting books! an important means of develop By this means development by all means 6.What’s the biggest desert in China? 中国最大的沙漠是什么? (教材 P34 3d) desert n. 沙漠；荒原 The silk Road became a busy highway for traders who carried things across deserts and mountains. 丝绸之路成为商人们穿越沙漠与山脉来运送货物的繁忙通道。 What’s the biggest desert in China? 中国最大的沙漠是什么？ desert n. 沙漠；荒原 v. 抛弃；遗弃；擅离（职守） （1）Camels are called the “ships of the desert”. 骆驼被称为“沙漠之舟”。 （2）Never desert your friends in trouble. 永远不要在朋友困难时抛弃他们。 n. v. Language points 小红书：Christina在努力｜原创课件 更多教学资源可以关注分享～ 一、单词填空。 根据句意和首字母写出所缺单词。 1.Sharing ideas with classmates is a meaningful p ____ of group learning. 2. It’s everyone’s duty to p ______ the clean water and fresh air in our hometown. 3.That is the achievement of the progress of human c __________. art rotect ivilization 4.Of all the students from Class Two，my brother Sam ran the f _______.He could run 3,000 metres. 5.Mr Wood from Africa is interested in the a _______ history of China. arthest ncient 40 二、用括号内所给单词的适当形式填空。 6.When talking about big __________（waterfall），you may think of Niagara Falls or Angel Falls. 7.The _______（two） day of the trip was even more wonderful than the first—we visited a lovely farm. 8.I didn’t know the ___________（important） of protecting nature until I saw the film. waterfalls second importance 9.With the ____________（develop） of robots，lots of workers worry that they might lose their jobs. 10.Summer vacation is the _______（long） holiday in a year，and we can make many happy memories. development longest 41 三、根据句意填空，使句子通顺、意思完整。每空限填一词。 11.Do you know which mountain is the highest ___ China? 12.It rained when we visited the Great Wall， ____ we had a great time. 13.Flora and Emma like the Nile. They are collecting information ______ it. 14.My mum puts fresh flowers ____ the table every morning，making the room bright. 15.We planted more trees in the yard ________ they can make the air fresher and the yard prettier. in but about on because 42 Lavf58.20.100 null 93180.055 $