人教版八下-Unit 7 what's the highest mountain in the world -Section A 1a—2d-ppt课件-(含教案+视频)-省级优课-(编号：f2666).zip

Qomolangma Its 8,844.43 meters high! Its the highest mountain in the world. the Sahara Its about 9,600,000 square kilometers in size. It is the biggest desert in the world. the Nile Its 6,671 kilometers long. Its the longest river in the world. the Caspian Sea Its 1,025 meters deep. Its the deepest salt lake in the world. Qomolangma-the highest mountain the Sahara- the biggest desert the Nile- the longest river the Caspian Sea-the deepest salt lake 1a Match the facts you know. Qomolangma about 9,600,000 square kilometers in size The Sahara1,025 meters deep The Caspian Sea 6,671 kilometers long The Nile8,844.43 meters high meters high (long, wide) 米高（长，宽)。 英语表示“有多长（宽，高）”时，一 般将数词和数量单位放在表示长宽高的形 容词前作状语。 e.g. The wall is 1.7 metres wide. 1b Listen and complete the sentences. 1. Qomolangma is _ than any other mountain in the world. 2. The Sahara is _ desert in the world. 3. The Caspian Sea is _ of all the salt lakes. 4. The Nile is _ river in the world. higher the biggest the deepest the longest 1c. Use the information in 1b to make conversations. A: What is the highest mountain in the world? B: Qomolangma. A: What is the biggest desert in the world? B: The Sahara. A: What is the deepest salt lake in the world? B: The Caspian sea. A: What is the longest river in the world? B: The Nile. Bob is fat. Jim is fatter. Mary is the fattest. Bob Jim Fan Bingbing is tall. Yao Ming is taller. Tom is the tallest. Cheng Long is short. Li lianjie is shorter. Jim is the shortest. 大多数形容词和副词有三个等级： 原级、比较级、最高级。 1.构成的规则变化: 2.构成的不规则变化: late later - latest early earlier earliest big bigger- biggest fluently/difficult more, most 重读闭音节、末尾只有一个重读闭音节、末尾只有一个 辅音字母双写加辅音字母双写加 erer 或或 estest 单音节词在词尾比较级 加- er或最高级加- est 以e结尾的词，只需加 r 或st 以辅音字母加以辅音字母加 y y 结尾双音节结尾双音节 词变词变 y y 为为 i i 加加 erer 或或 estest 部分双音节和多音节词在原部分双音节和多音节词在原 级前加级前加 more more 或或 mostmost 少数以er,ow 结尾的双音 节词加-er -est tall taller- tallest clever cleverer-cleverest 形容词和副词比较级和最高级构成形容词和副词比较级和最高级构成 ( (规则变化规则变化) ) 不规则变化 good / well better - best much / many more - most bad / badly / ill worse worst little less least far farther/ further farthest furthest old older/ elder oldest / eldest 形容词和副词比较级的用法 1.Who runs faster, he or she? 2.He runs faster than she. 3.He runs much faster than she. 4.He becomes healthier and healthier. 5.The more you exercise, the healthier you will be. 6.She is less healthy than he. 1.表示两者之间间的选择选择 , 可用“Which/Who + 比较较，or?”. 2. 2.表示两者之表示两者之间间间间的比的比较较较较，通常用，通常用连词连词连词连词 than than 引引导导导导， 表示表示“ “更更一些一些” ” 3.much/far/a lot, even ,still ,a little/a bit 修饰饰比较级较级 ,表示程度. Who runs faster, he or she? He runs faster than she. He runs much faster than she. 形容词和副词比较级的用法 4. “比较级较级 +and+比较级较级 ”表示“越来越” 5. “the+比较级较级 , the + 比较级较级 ”表示“ 越, 越 ” 6. 表示不及另一方时时，用“less+原级级+than” (双音节节和多音节词节词 ) He becomes healthier and healthier. The more you exercise, the healthier you will be. She is less healthy than he. He is healthier than she. Shanghai is becoming more and more modern. 1.比较级 + and +比较级 越来越 2.the+比较级 , the + 比较级 越, 越 3._you are, _mistakes you will make. (你越仔细，做错的题目就越少） 4. _you eat, _youll be. (你吃得越多,就越胖) 5. Alice writes well. Mary writes _ than she. (甚至更好） The more carefulthe fewer The morethe fatter 1.The girl becomes _. (越来越漂亮） more and more beautiful 2. The weather is getting _. (越来越槽糕） worse and worse even / much better 1.表示三者或三者以上比较较,可用”Which/Who +最高级级,or ?”表示. 2. 最高级级+of/ (同类类比较较) in (范围围比较较) 4.one of + 形容词词最高级级 +名词词复数表示“最 之一” 3. 序数词词修饰饰最高级级 形容词和副词的最高级的用法 Who is the tallest, Tom , Mike , or Jack? Tom is the tallest of the three. Mike is the second tallest student in our class. Jack is one of the tallest students in our class. Tom runs (the) fastest in our class. 1. -Which is _ season in Beijing? (2003 年) -I think its autumn. A. good B. better C. best D. the best 该题的核心词为season。根据比较级与最高 级的知识, 两者之间用比较级, 而三者或三 者以上用最高级, 北京有四季, 因此本题应 选择最高级。又因为形容词最高级前要加 定冠词the, 因此答案为D。 2. - Which is_ , the sun, the moon or the earth?(2004年) - Of course, the moon is. A. small B. smaller C. smallest D. the smallest 解析：正确答案为D。该题的核心词 在第一句句尾，the sun, the moon or the earth, 提问的对象为三者，应该选择最高 级。 3. The air in Beijing is getting much _ now than a few years ago.(2005年) A. clean B. cleaner C. cleanest D. the cleanest 该题的核心词为than，than一词 是比较级的标志。 4. Mobile phones are very popular now and they are _ than before.(2005年) A. cheap B. cheaper C. cheapest D. the cheapest 该题与第三题相似，核心词为 than。 1.Hainan is a very large Island .It is the second _ island in china. (large) 2.Our teacher is as _ as before. (Our teacher is as _ as before. (busy). ). 3.He is _ among us. (3.He is _ among us. (careful) ) 4.Li Lei 4.Li Lei jumped jumped _ than Jim. (far)_ than Jim. (far) 5.The busier he is, the _ he feels. (5.The busier he is, the _ he feels. (happy) ) 6.I think Yao Ming is one of _ basketball players in NBA. (hot) busy the most careful farther happier largest the hottest ExericesExerices Read the conversation in 2d Preview :Try to collect something about Qomalangma Unit7 Whats the highest mountain in the world? 第一课时第一课时 教学设计教学设计 一、一、 教学目标教学目标 （一）知识与技能 1. Improve the listening and speaking skills. 2.学习完成任务所需要的语言。 3. Master some important words and phrases. Qomolangma the Nile the Sahara the Caspain Sea 4.掌握用不同句式表示比较级和最高级。 （二）过程与方法 采用 PPT 课件，直观教学法，调动学生的积极性，引导他们积极 参与课堂。 （三）情感态度与价值观 通过课堂活动，培养合作精神，了解一些自然地理知识。 二、二、 教学重点教学重点 1. 学会不同句式表达比较级和最高级。 2. Improve the listening and speaking skills. 3. Master some important words and phrases. 三、三、 教学难点教学难点 1. 掌握用不同句式表示比较级和最高级。 2. Improve the listening and speaking skills. 四、 教法导航教法导航：课上引导学生积极参与课堂活动。 教法导航：发现法、动手法 教学准备：多媒体、图片 五、五、 教学过程教学过程 Step1 Greetings Greet the students Step2 Warming-up 1. Listen to a beautiful song and talk about something about Qomolangma. 2. Show some pictures and let students answer. 3. Match the facts they know. Qomolangmaabout 9,600,000 square kilometers in size The Sahara1,025 meters deep The Caspian Sea6,671 kilometers long The Nile8,844.43 meters high Then explain the following language points. 8，844 meters high：8，844 米高。 meters high (long，wide)米高（长，宽)。 英语表示“有多长（宽，高） ”时，一般将数词和数量单位 放在表示长宽高的形容词前作状语。 e.g. The wall is 1.7 metres wide. Step3 Listening 1b, Listen and complete the sentences Step4 Pair work Make conversations in pairs and let some pairs read their dialogues. Step5 Presentation 1. Show some pictures and let students think about them. eg. Bob is fat. Jim is fatter. Mary is the fattest. Fang Bingbing is tall. Yaoming is taller. Tom is the tallest. Chenglong is short. Li Lianjie is shorter. Jim is the shortest. 2. 形容词和副词比较级和最高级的构成 （1）构成的规则变化 （2）构成的不规则变化 good / well better best much / many more - most bad / badly / ill worse worst little less least far farther/ further farthest furthest old older/ elder oldest / eldest Step6 Discussing time 1. Let students discuss the use of the comparative and superlative. 2. Explain the key points and give their help if they need. Step7 巩固练习 Step8 Homework Read the conversation in 2d. Preview: try to collect something about Qomolangma. 六、教学反思六、教学反思 本节课涉及一些地理知识，学生比较感兴趣，因此他们可 以愉快主动的接受信息，加工信息，交流信息，但是知识点的掌握 仍需多加做题进行巩固。