人教版（2024）八年级下册（2024）Section A精品课件ppt

这是一份人教版（2024）八年级下册（2024）Section A精品课件ppt
Unit 4 The Wonders of NatureSection A（1a-2d）· 学习目标· 新课导入· 内容讲解· 课堂总结· 课后作业1. New words: wonder, measurement, below, level, surface, depth, dive, unusual, bottom2. Expressions: square kilometre3. Sentences: ①Why people are researching the deep sea? ②How everyone should protect the deep sea? Do you know the name of the waterfall inthe photo?Yes/No...Do you know where it is?Yes.It’s in China./No. I don’t know.What do you think is special about it?It’s...wonder /ˈwʌndə(r)/ n.奇观;惊叹v.琢磨;想知道;感到诧异measurement /ˈmeʒəmənt/ n. 数量;测量below /bɪˈləʊ/ prep. & adv. 在(......)下面;低于level /ˈlevl/ n. 高度;水平;程度 surface /ˈsɜːfɪs/ n.表面;表层depth /depθ/ n深(度);纵深dive /daɪv/ v.&n.潜水;跳水;俯冲unusual /ʌnˈjuːʒuəl/ adj.特别的;不寻常的bottom /ˈbɒtəm/ n.底部;最下部Match the places with the pictures.____Nile River ____Angel Falls ____Mount Qomolangma ____Dead Sea ____Sahara Desert ____Mariana TrenchFADCEBListen to the game show. Complete the descriptions of the places.highest mountainbiggest desertlowest placedeepest pointListen again. Complete the measurements in 1b with the numbers below.8,848.869,000,00041611,000Host: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 deepcst 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!Talk about the places you have learnt about.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 ..What do you know about the deep sea? Complete the sentences with the information from the picture.1. Fendouzhe reached 2. The deep sea begins 3. The Titanic rests at4. A whale can dive to BDCAA class is asking a deep-sea researcher some questions after his talk.Listen and tick the topics they discuss.where the deep sea beginswhy people are researching the deep seawhich Chinese submersible dived deeper in the water than many otherswhat deep-sea animals are likehow everyone should protect the deep sea√√√Why people are researching the deep sea?句意：“人们为什要研究深海？”research v. & n.研究;调查research sth. 调查某事/物 research into/on 对 …… 的研究 （研究方向）例句：She spent a month researching the history of local folk art. 她花了一个月研究当地民间艺术史。 He researched on environmental policies in European countries for his thesis. 他为论文研究了欧洲国家的环保政策。1.They ________ a lot of data before publishing the report.A. researched on B. did research C. researched D. made research on2.适当形式填空。The journalist spent weeks ____________ (research) the company's financial problems.CresearchingHow everyone should protect the deep sea?句意：“每个人应该如何保护深海？”protect v. 保护protect sth. 保护某事/物 protect sb/sth from/against sth 保护某人/物免受 …… (伤害/危险)例句：We must protect the environment for future generations. 我们必须为子孙后代保护环境。 The thick blanket protects the plants from the cold night air. 保护植物免受夜间冷空气侵袭。1.We need to use a cover to ______ the machine _______dust. A. protect; away B. protect; from C. prevent; of D. keep; with2.适当形式填空。Everyone should take responsibility to ________ (protect) wild animals in dangerBprotectListen 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 __________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.ocean floor2020filmedblindsee light11,000Ms 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!Read the questions and think of more you would like to ask the deep-searesearcher. 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?Memorize the new words, expressions and sentences in Section A (1a-2d).Finish the exercises of the test paper on the book 5·3.