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

人教版英语8年级下册培优备课精做课件 Unit 4（第1课时）Section A 1a-2d Unit 4 The Wonders of Nature 授课教师： Home . 班 级： 8年级（---）班 . 时 间： . 2026年2月14日 2026年2月14日星期六9时3分7秒 2026年2月14日星期六9时3分8秒 1a Match the places with the pictures. Nile River Angel Falls Mount Qomolangma Dead sea Sahara Desert Mariana Trench A D B E C F F C A E D B Place Description Measurement Mount Qomolangma the . in the world metres high Sahara Desert the . in the world about square kilometres in size 1b Listen to the game show. Complete the descriptions of the places. highest mountain  biggest desert 1b Listen to the game show. Complete the descriptions of the places. Place Description Measurement Dead Sea the . on earth metres below sea level Mariana Trench the . in the ocean about metres deep lowest place deepest point 1c Listen again. Complete the measurements in 1b with the numbers below. 416 8,848.86 11,000 9,000,000 Place Description Measurement Mount Qomolangma the . in the world metres high highest mountain  8,848.86 Place Description Measurement 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 biggest desert 9,000,000 lowest place deepest point 416 11,000  416 8,848.86 11,000 9,000,000 海平面 一、根据所给提示完成单词。(6分) 1. We love our motherland from the ________(底部)of the heart. 2. The Great Wall in China is one of the greatest man-made ________(奇观)in the world. 3. When the temperature is b________ zero, water turns into ice. bottom wonders elow 中考考法 4. The Sahara is one of the largest_________(沙漠)in the world. 5. Through lots of practice, his English __________ (水平)improved a lot. deserts level 中考考法 熟词生义 wonder 写出画线词的词性及汉语意思 He wondered why Sandy left without saying goodbye. ______________ v.想知道 中考考法 A: What’s the lowest place on earth? B: It’s... A: How low is it? B: It’s surface is... metres below sea level. A: Now, what’s... 1d Talk about the places you have learnt about. 表面 A: What’s the lowest place on earth? B: It’s the Dead Sea. A: How low is it? B: Its surface is 416 metres below sea level. A: Now, what’s the highest mountain in the world? B: It’s Mount Qomolangma. A: How high is it? B: It’s 8,848.86 metres high. e.g. 1. Fendouzhe reached ______________. 2. The deep sea begins at ______________. 3. The Titanic rests at ____________. 4. A whale can dive to _________________. 2a What do you know about the deep sea? Complete the sentences with the information from the picture. 潜水 10,909 metres 200 metres 3,800 metres over 2,000 metres 二、用所给词的适当形式填空。(7分) 6. I find the three girls in the club have different ________ (ability). 7. Among all the students, she got the ____________ (high) grade in the maths exam. 8. We use a ruler for the _______________ (measure) of the desk’s length in maths class. abilities highest measurement 中考考法 9.［达州期末］India has the ____________ (large) population in the world now. 10. In my ________ morning routine, I ________ jog in the park near my home. But yesterday, something __________ happened. A man got hurt suddenly, and luckily someone took him to hospital in time. (usual) largest usual usually unusual 中考考法 2b A class is asking a deep-sea researcher some questions after his talk. 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 潜水艇 2c Listen again. Complete the sentences with the facts from the conversation. 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 “sea”. Some can even create their own                     . 4. There is rubbish even at                   metres deep. 2020 ocean floor blind  light 11,000 2d Read the questions and think of more you would like to ask the deep-sea researcher. Research the answers. Then ask and answer the questions with a partner. 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? 在……的底部 三、方框选词并用其适当形式填空。(4分) 11. The __________ of the lake is as smooth as a mirror on quiet mornings. 12. The bird made a quick __________ from the sky to catch a small worm on the ground. surface usual, dive, surface, deep dive 中考考法 13. The ____________ of this lake reaches over 80 metres. 14. Betty hopes to give her mother an ____________ gift on her fortieth birthday. usual, dive, surface, deep depth unusual 中考考法 e.g. A: What is the largest shark in the deep sea? B: I think it’s the whale shark. A: Do you know how large it is? B: It can grow up to about 10 to 20 metres in length. A: What is the bottom of the deep sea like? B: It is dark, freezing, and has high pressure. There are also many unique creatures. A: Why is it important to research the deep sea? B: Because the deep sea has unique species for research, holds important resources, and can help control our climate. 四、单项选择。 15.( )There are many children skating on the ____ of the lake. A. surface B. depth C. sky D. bottom A 中考考法 16.( )The boy decided to ____ into the lake to check the old wooden vessel. A. jog B. fly C. dive D. run C 中考考法 17.( )We noticed a(n) ____ smell from the kitchen and found that something was burning. A. good B. unusual C. salty D. sweet B 中考考法 五、根据汉语意思完成句子。(17分) 18. 这座岛仅高于海平面几米。 The island is only a few metres above ________ ________. 19. 优秀的学习者能将他们正在学的与一些有趣的事物联系起来。 Good learners can ________ what they are learning ________ something interesting. sea level  connect with 中考考法 20.这种动物体型较小，但它的声音很大。 The animal is small ________ ________, but it has a very loud voice. 21.我们学校占地面积超过350000平方米。 Our school has an area of more than 350, 000 ________ ________. in size 点拨：介词短语in size指“在体型、尺寸方面”。同样的用法还有in height, in length等。 square metres 中考考法 22.［天津模拟］请在你的朋友们到达之前，尽可能快地打扫你的房间。 Please clean your room ____________________________ before your friends arrive. 23. 众所周知，大鲨鱼生活在深海里。 As we all know, big sharks live _____________________. as quickly as you can in the deep sea 中考考法 六、补全对话。(5分) A: Good morning! B: 24. ________________________________________ A: Eric, could you help me with my geography homework? What is the largest desert in the world? Is it the Arabian Desert? B: 25. __________________________ The Sahara is the biggest and the Arabian Desert is the second biggest. Good morning!  No. it isn’t./No. 中考考法 A: I see. 26. __________________________________ B: It’s about 9,000,000 square kilometres in size. A: OK. Next question: 27. ________________________________________________ B: The Caspian Sea. It is bigger than any other salt lake. A: Which country is the biggest in Asia? B: 28. ________________________________________ How big is the Sahara? what is the biggest salt lake in the world? China./China, of course. 中考考法 A: Wow, you’re really good at geography. Can you tell me something more about China? B: No problem! 中考考法 七、［陕西模拟改编］阅读理解。 中考考法 Historical Importance: The Nile has been a life source (来源)for thousands of years. The ancient Egyptians(埃及人)depended on the river and its banks for: fresh water, food, transportation, rich soil(土壤) for growing crops. Interesting Fact: The name “Nile” is from the Greek word “Neilos”. It means “valley”(流域). 中考考法 Sustainability(可持续性): Around 95% of the Egyptians live near the river bank and millions of tourists visit it every year. A large number of people are causing serious environmental problems. The United Nations and other global organizations are trying to protect the Nile Delta and communities living there. 中考考法 29.( )We may read the text in a(n) ____ magazine. A. art B. culture C. nature D. sports C 中考考法 30.( )Which of the following is TRUE according to the passage? A. The Nile flows through 11 Asian countries. B. The Nile’s length is less than 6, 650 km. C. You can’t see turtles in the Nile or its banks. D. About 95% of the Egyptians live near the river bank. D 中考考法 31.( )Which piece of the following information is NOT mentioned(提及)in the text? A. How long the Nile is. B. Where the Nile begins. C. What the meaning of the name “Nile” is. D. Why the Nile is important to ancient Egyptians. B 中考考法 32.( ) How does the writer present (呈现)the text to help us understand better? A. By offering facts and photos. B. By comparing different things. C. By giving different examples. D. By telling an interesting story. A 中考考法 Words: 1. wonder n. 奇观；惊叹 v. 琢磨；想知道；感到诧异— wonderful adj. 精彩的；绝妙的 2. measure v. 测量；量度为—measurement n. 数量；测量 3. deep adj. 深的；有……深的—depth n. 深(度)；纵深 4. research v. & n. 研究；调查—researcher n. 研究者 5. usual adj. 通常的—unusual adj. 特别的；不寻常的— usually adv.通常地 Phrases: 1. on earth 在地球上 2. square kilometre 平方千米 3. below/above sea level 低于/高于海平面 4. dive into the deep sea 潜入深海 5. the bottom of …… 的底部 null 76538.43 null 60916.37 $