新人教版初中英语八下Unit 4 课时9 Reading Plus大单元课时课件

这是一份新人教版初中英语八下Unit 4 课时9 Reading Plus大单元课时课件，共34页。
Unit 4The Wonders of NatureThe Sahara DesertContentsLead-inPre-readingWhile-readingPost-readingSummaryLanguage PointsExerciseHomeworkLearning Objectives通过本课时的学习，学生能够：能够梳理并概括撒哈拉沙漠的基本信息（位置、面积、年龄、地理特征等），完成思维导图的核心内容填充。 能够理解并描述沙漠中人类与动物的生存方式，分析它们适应极端环境的特点。(学习理解)能够阐述撒哈拉沙漠扩张的原因及影响，并思考应对沙漠化的有效措施。(学习理解，应用实践) 能够围绕沙漠生活与环境保护展开讨论，清晰表达自己的观点并说明理由。​(迁移创新)Lead in• Look at the two pictures. What are they?• What words come to your mind when you see them?• Have you ever dreamed of visiting such places?Sahara DesertAmazon RainforestPre-readingReading: The Sahara DesertLocated in Africa, the Sahara Desert spreads across 30% of the continent. Known as "the great desert" in Arabic, it covers about 9 million square kilometres and is at least 4.6 million years old, making it one of the world's oldest places.It is the largest hot desert—dry and hot, though some deserts like Antarctica are cold. The Sahara is mostly rocky, but also has grass, lakes, mountains, and "sand seas" where wind makes sand look like waves.Life is hard here. About two million people live there, often moving, while some settle near water. Animals like camels (which drink 100+ litres in 13 minutes) and fennec foxes (with large cooling ears) have adapted to survive.Worryingly, the Sahara is growing—10% larger than a century ago, partly due to climate change. Rising temperatures and less rain dry the land, and it will keep expanding without action.While-readingMatch the main idea of each paragraph.Para 1Para 2-3Para 4-5Para 6The Sahara is a huge and ancient desert in Africa.The geography and climate of the Sahara.Life in the Sahara (people and animals).The Sahara is growing due to climate change.Fill in the blanks with the information from the text.309dry, hot100climate changeRead para.1 and complete the table.Africa30 per cent9 million4.6 million All deserts are dry, and the Sahara is both dry and hot. It is the largest hot desert in the world. We may think that all deserts are hot, but in fact some deserts are very cold! Many scientists believe that Antarctica, for example, is a type of cold desert. Most of the Sahara is rocky ground. But there are also places with grass, lakes, mountains, and even sand seas. A sand sea is just what it sounds like—it looks like a sea of sand! When the wind blows, the sand looks like waves.dryhot rocky groundsand seaswavesRead para.2-para.3,and then fill in the blanks.Read para.4-para.5,and then fill in the blanks. Life in the Sahara is difficult. About two million people live in the Sahara. They usually move from place to place. There is water in a few parts of the Sahara, and some people live in these places all year round. Not many animals can live in a place with such a dry and hot climate. They must adapt to survive. Camels, for example, go for a long time without drinking water. When they do find water, they can drink more than 100 litres of it in 13 minutes! Fennec foxes live in the desert too. They have large ears to help their bodies stay cool.Life in Sahara:Life is . About 2 people live there. Some move from place to place. Some live all year.Animals:Not many animals can live here. They must .Camels:They can live long water. They can drink much water .Fennec foxes:They live . They have big ears to .difficultmillionnear wateradapt to survivewithoutquicklyin the desertkeep coolComplete the mind map of the Sahara Desert.in Africaabout 9 million square kilometersabout 10% larger than a century ago, due to climate changeat least 4.6 million years oldabout 2 million people, camels, fennec foxesrocky ground, grass, lakes, mountains, sand seasPost-readingDiscuss the questions.1. How is life in the desert different from other places?Life in the desert is very different from other places because there is not much water, and it is very hot.2. Would you like to visit/live in the Sahara? Why?I would like to visit the Sahara Desert, but not to live there.3. What will happen if the Sahara keeps growing? What can we do to stop it?If the Sahara keeps getting bigger, we will lose more land for homes and farming. We must try and stop the climate from getting too hot and dry to help stop this process.公众号:懒人笔记资料库13540016960A.Exposition(说明文)B.Narration(记叙文）A. ①/ ②③④⑤/⑥B. ①②/ ③④/ ⑤⑥C. ①/②③/④⑤/⑥ The Yellow River runs from the mountains_______the sea. It gave birth to one of_______and most famous cultures in the world—the Yellow River culture. In the hearts of_______people, the Yellow River is the mother river. It is expected to play a more important role in our country's_______.Fill in the blanks with the correct words.Summary1. Sahara /səˈhɑːrə/ n. 撒哈拉沙漠2. desert /ˈdezət/ n. 沙漠（注意区别动词 /dɪˈzɜːt/ 抛弃）3. locate /ləʊˈkeɪt/ v. 位于；坐落于4. spread /spred/ v. 延伸；扩散5. continent /ˈkɒntɪnənt/ n. 大陆；大洲6. vast /vɑːst/ adj. 广阔的；巨大的7. Arabic /ˈærəbɪk/ n. 阿拉伯语；adj. 阿拉伯的8. square /skweə/ adj. 平方的；正方形的9. kilometre /kɪˈlɒmɪtə/ n. 千米；公里10. million /ˈmɪljən/ num. 百万11. largest /ˈlɑːdʒɪst/ adj. 最大的（large的最高级）12. fact /fækt/ n. 事实；in fact 实际上13. scientist /ˈsaɪəntɪst/ n. 科学家14. Antarctica /ænˈtɑːktɪkə/ n. 南极洲15. rocky /ˈrɒki/ adj. 多岩石的16. ground /ɡraʊnd/ n. 地面；土地17. mountain /ˈmaʊntən/ n. 山；山脉18. wave /weɪv/ n. 波浪；海浪19. blow /bləʊ/ v. 吹；刮风20. difficult /ˈdɪfɪkəlt/ adj. 困难的；艰难的21. animal /ˈænɪml/ n. 动物22. climate /ˈklaɪmət/ n. 气候23. adapt /əˈdæpt/ v. 适应24. survive /səˈvaɪv/ v. 生存；存活25. camel /ˈkæml/ n. 骆驼26. example /ɪɡˈzɑːmpl/ n. 例子；for example 例如27. litre /ˈliːtə/ n. 升（容量单位）28. fennec fox /ˈfenɪk fɒks/ n. 耳廓狐29. effective /ɪˈfektɪv/ adj. 有效的30. measure /ˈmeʒə/ n. 措施；v. 测量31. process /ˈprəʊses/ n. 过程；进程Located in Africa, the Sahara Desert spreads across 30 per cent of the continent. This vast desert, also known as "the great desert" in Arabic, is about 9 million square kilometres in size. It is also at least 4.6 million years old. This means that it is one of the oldest places in the world.All deserts are dry, and the Sahara is both dry and hot. It is the largest hot desert in the world. We may think that all deserts are hot, but in fact some deserts are very cold! Many scientists believe that Antarctica, for example, is a type of cold desert.Most of the Sahara is rocky ground. But there are also places with grass, lakes, mountains, and even sand seas. A sand sea is just what it sounds like—it looks like a sea of sand! When the wind blows, the sand looks like waves.Life in the Sahara is difficult. About two million people live in the Sahara. They usually move from place to place. There is water in a few parts of the Sahara, and some people live in these places all year round.Not many animals can live in a place with such a dry and hot climate. They must adapt to survive. Camels, for example, go for a long time without drinking water. When they do find water, they can drink more than 100 litres of it in 13 minutes! Fennec foxes live in the desert too. They have large ears to help their bodies stay cool.Today, the world's largest hot desert is getting even bigger. It is now about 10 per cent larger than what it was about a century ago. But why is it growing? Some scientists believe that part of the reason is climate change. As temperatures rise, summers in Africa grow hotter and less rain falls. Water bodies get smaller and the ground gets drier and drier. If we do not take effective measures, the desert will keep growing!Language points1. Located in Africa, the Sahara Desert spreads across 30 per cent of the continent. 位于非洲，撒哈拉沙漠延伸至该大陆的30%。坐落在河边，这个小镇很美丽。Located by the river, the small town is very beautiful.这种植物遍布全国。This kind of plant spreads across the country.要点1：过去分词短语作状语用法：过去分词位于句首，表示地点或状态，逻辑主语与句子主语一致。要点2：spread across用法：意为“延伸，遍布”。2. This means that it is one of the oldest places in the world. 这意味着它是世界上最古老的地方之一。这意味着我们必须早点出发。This means that we must set out early.故宫是中国最著名的景点之一。The Palace Museum is one of the most famous places in China.要点1：This means that…用法：意为“这意味着……”，后接宾语从句。要点2：one of the + 形容词最高级 + 复数名词用法：表示“最……之一”，名词用复数。3. We may think that all deserts are hot, but in fact some deserts are very cold! 我们可能认为所有沙漠都很热，但事实上有些沙漠非常寒冷！我们可能认为他很懒，但事实上他很勤奋。We may think that he is lazy, but in fact he is hard-working.他看起来很严肃，事实上他很友好。He looks serious; in fact, he is very friendly.要点1：We may think that…用法：表示“我们可能认为……”，后接宾语从句。要点2：in fact用法：意为“事实上”，用于纠正或补充前文观点。4. A sand sea is just what it sounds like—it looks like a sea of sand! 沙海就像它听起来的那样——它看起来像一片沙的海洋！这个名字就像它听起来的那样——它是一个安静的地方。The name is just what it sounds like—it is a quiet place.这片云看起来像一只兔子。The cloud looks like a rabbit.要点1：what it sounds like用法：表语从句，意为“就像它听起来的那样”。要点2：look like用法：意为“看起来像”，后接名词或代词。5. They usually move from place to place. 他们通常从一个地方搬到另一个地方。这个歌手四处巡演。The singer travels from place to place.过去，人们为了寻找食物四处迁徙。In the past, people moved from place to place to look for food.要点：from place to place用法：意为“四处迁徙，从一地到另一地”。6. They must adapt to survive. 它们必须适应以求生存。我们必须适应新的环境。We must adapt to the new environment.我们种树为了保护环境。We plant trees to protect the environment.要点1：adapt to用法：意为“适应……”，后接名词或代词。要点2：不定式表目的用法：to do 表示“为了……”，说明动作的目的。Exercise根据文章内容，从方框中选单词并用其适当形式完成短文The Sahara Desert is a famous natural wonder. It ________ across 30 per cent of Africa. It is about 9 million square kilometres in size, making it the ________ hot desert in the world. It is also very _________—at least 4.6 million years old.Most of the Sahara is rocky ground, with grass, lakes, mountains and sand seas. Life in the desert is not easy. Only about two million people ________ there, and they often move from place to place.Animals must ________ to the dry and hot ________ to _________. Camels and fennec foxes are good examples of desert animals.Now the Sahara is _________ bigger. It is about 10 per cent larger than it was a ________ ago. If we don’t take effective _________, the desert will keep growing.spreadslargestold liveadaptclimatesurvivegrowingcenturymeasuresHomework