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八年级英语(下)第Unit7第3课时Unit 7 Whats the highest mountain in the world?Section A Grammar Focus4c一、【教材分析】目来源：21世纪教育网标知识21世纪教育网目标1. 学习并掌握下列单词：来源：21世纪教育网ocean, the Pacific Ocean来源：21世纪教育网2. 能准确使用以下常用表达：how high, longer than, the deepest salt lake, as popular as, the Yangtze River, 3. 能熟练掌握并使用下列重点句式：1）How high is Qomolangma? Its 8,844.43 high.2）Did you know that China is one of the oldest countries in the world? Yes, I did. Its much older than the US.来源：21世纪教育网3) Which is the deepest salt lake in the world? The Caspian Sea.水平目标能够掌握形容词的比较等级，并使用形容词的比较等级去描述事物。情感目标培养学生热爱大自然，保护环境的意识。教学重点Talk about geography and nature .教学难点准确使用本课时词汇与句子；读写训练。教学方法情景教学法；任务型教学法。二、【教学流程】环节师生活动I. Preparation 准备1检查单词预习情况：教师结合学生读的状况，适当领读，并协助学生正音。教师根据构词法知识，协助学生识记单词。 ocean, the Pacific Ocean how high, longer than, the deepest salt lake, as popular as, the Yangtze River, 2. 单词听写听写单词反馈利用构词法再记忆。3复习检查 1）通过检查“学案”中“新知预习”内容，检查预习效果。2）复习上课时知识点：The Yellow River is long.The Yangtze River is a lot _ than the Yellow River.The Nile is _ of all.The Yangtze River is not _ long _ the Nile.= The Yangtze River is not _ than the Nile.II. Presentation表现1. Learning tasks “示标定向”。 1）学习并掌握下列单词：ocean, the Pacific Ocean2）能准确使用以下常用表达：how high, longer than, the deepest salt lake, as popular as, the Yangtze River, 3）能熟练掌握并使用下列重点句式：1）How high is Qomolangma? Its 8,844.43 high.2）Did you know that China is one of the oldest countries in the world? Yes, I did. Its much older than the US.3) Which is the deepest salt lake in the world? The Caspian Sea.2. Leading-in“导入新课”Let the Ss read Grammar Focus quickly and find the rules:3. 形容词和副词比较级和最高级变化规则1.规则变化 1) 一般情况下，单音节或双音节的形容词（或副词）比较级er ， 最高级est 如： clevercleverercleverest fewfewerfewest smallsmallersmallest等。 2) 以e结尾的词，比较级r，最高级st 即可。 如：nicenicernicest cutecutercutest largelargerlargest 3) 以辅音字母y结尾的变y为ier或est。如: easyeasiereasiest happyhappierhappiest 再如：early, busy, heavy, dirty, lazy也如此。 少数单音节词也是这样，如： pleasedmore pleasedthe most pleased tiredmore tiredthe most tired 2. 不规则变化： good better best well better best badworse worst many / much more most far farther farthest (距离远) far further furthest (程度深) old elder eldest (长幼) old older oldest (年龄)III. Practice 操练1. 学以致用1. Our family has bought a car so we can travel _ than before.（2008陕西） A. most easily B. less easily C. easily D. more easily 2. My father told me a story last night. It is _ one Ive ever heard.（2009陕西） A. the funniest B. funniest C. funnier D. the funnier 3. The _ friends you have, the _ you will be.（2010陕西） A. more, happy B. many, happy C. more, happier D. many, happier 4. When he heard a cry for help, he ran out as _ as he could.（2011陕西）A. hardly B. quickly C. finally D. slowly5. This place is not big enough for Lucys birthday party. We should find a _ one.（2012陕西） A. big B. small C. bigger D. smallerIV. Consolidation巩固1. 4a Fill in the blanks with the correct forms of the words in the box.4b Write two comparisons about two topics. Write true facts.2.4c Writing Write five questions using comparisons. Then ask your partner your questionsV. Examination检测1. 引导学生小结梳理知识框架、规律、方法，并对合作小组当堂学习情况进行总结评价，巩固学生所获得的语言知识和经验，让学生在评价中反思，在反思中进步。Ask one of the students to say what they have learnt.1)words & phrases 2) 用形容词描述大自然。2. 当堂检测(见学案)：教师要随堂进行评价，批改可以由学习小组内互批、组间互批、集体订正等方法，批阅后教师要统计达标情况,收集反馈信息，当堂矫正补救。VI. Assignment作业1. 口头作业：利用早读，朗读或背诵课文，体会过去进行时的含义和用法。2. 书面作业：1）记忆所学单词、短语或重点句型。2）Finish off the exercises in tongbuxuexi.3. Preview the new words of Section B.三、【板书设计】Unit 7 Whats the highest mountain in the world?Section A Grammar Focus4c1）How high is Qomolangma? Its 8,844.43 high.2）Did you know that China is one of the oldest countries in the world? Yes, I did. Its much older than the US.3) Which is the deepest salt lake in the world? The Caspian Sea.四、【教后反思】在上一节课的基础上，大部分同学能够很轻松的完成这节课的学习任务，只是一些困难生还不行，课下要加强对他们的训练。
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