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1、unit7 whats the highest mountain in the world?section A (1A-2b)教材分析：本节课是人教版八年级下册unit7的第一课，课型为听说课，以听和说操练为主。在教山峰河流沙漠的单词时，农村学生比较生疏，所以先让他们查查资料，上课时会就会熟悉一些。对于短语as big as, much bigger教师用PPT图片表现出来，学生学起来会轻松一些。对于听力部分，绝大部分的学生听力基础不好，太长的听力填空对他们来说很难完成，所以把它整合成4段，并每段只有一问一答，这样学生会更容易捕捉需要的信息。对于难点读大数字这个块，老师先让学生课前百度了解一下
2、读的方法，在课堂上还安排了一个听力，一个小组互助活动，还有一个改错活动，让学生突破难点。学情分析：学生之前有学过形容词的比较极和最高级，对比较极掌握得还能够，但是用最高级表达句子时最易犯以下错误：前面没有the， 忘了用in/of说明一个范围， 所以，围绕主题用表格展示这些出来，并让他们观察，归纳; 学生听力基础不好，老师把1b的听力材料整合并分为4段，并先让他们猜测，对于2b的听力，学生能听出数字就能够了。Targets：1.students are able to pronounce and use the following words：square, meter, deep, long
3、, desert, mountain, salt lake. The Sahara，Qomalangma，The Caspian Sea, The Nile2. students are able to read and understand the sentences：-Whats the highest mountain in the world? -How high/deep/big/long is the.? It is about3. students get familiar with the usage of the comparatives and superlatives o
4、f adjectives.4. Students are able to read big numbers.Key point： Ss are able to use comparative words and superlative words to talk about the geography.Difficult point： Ss are able to read the big numbers.导学案：学生自找资料了解The Sahara， Qomalangma， The Caspian Sea,The Nile 并翻译：一、1025 meters deep_6670 kilome
5、ters long_9,600,000 square kilometers_ （参考书）二、用英语读出以下数字：420 5600 （百度）三、写出以下比较级和最高级。（参考八年级上册96页）tall_ _ big_ _ long_ _四、翻译：我比他高。 全班我最高。设计意图：让学生了解主题的背景知识，学起来会熟悉一些同时检测学生对旧知识的掌握水准， 以便调整上课步骤。教学环节：一 、检查导学案，评价。二、学习新课1、 Warm-up Ss watch a video（Qomolangma, The Nile, The Caspian, The Sahara的视频剪辑合并）。T： Would
6、you like to visit them?2、Ss learn the target words by PPT pictures. (Qomolangma, The Nile, The Caspian, The Sahara的图片配上数字说明，并且有飞机逐渐飞向这些景点的动画效果)。T：whats this?Ss： Qomolangma.T： Is it a mountain or a river?S： a mountain.T： How high is it? (T help the students say the number： it is 8,844.43 meters high)
7、 T： It is very high, it is the highest mountain in the world. (write the words Qomolangma mountain high on blackboard)用这种方法呈现以下单词：The Sahara desert square kilometers The Caspian Sea deep The Nile.设计意图：用三维重现教学法，先呈现目标单词和目标句，让学生先有印象。后面还会重复听，说，练，不急于一下子会读会记。符合学生的学习规律。3.Ss match the facts they know.Qomola
8、ngma About 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters high设计意图：及时激活学生刚接触的新知识，并检测复习 in size deep long high.4、listening.(教师结合原材料，自已录音整合得更简单,并分为四段)听力整合分段如下：1,A: What is the highest mountain in the world?B:Qomolangma is the h
9、ighest mountain in the world, it is higher than any other mountain in the world.2, A: Whats the biggest desert in the world?B: Sahara is the biggest desert in the world.3,A: Whats the deepest salt lakes in the world? B: The Caspian Sea is the deepest of all the salt lakes.4, A: Whats the longest riv
10、er in the world? B: The Nile is the longest river in the world.Pre-listening. Ss read the sentences and predict the worlds silently. 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
11、 the world.设计意图：根据刚学新知识预测，让学生有目的去听，这样准确率高一些。While listening 第一遍听，第二遍请同学回答，老师引导其它同学纠正或补充。After listeningSs practice the dialogues with partner by a table box on PPT and show their workout.QomolangmaThe highest mountain In the worldThe SaharaThe biggestIn the worldThe NileThe longestIn the worldCaspia
12、n SeaThe deepestOf all the salt lakeA: What is the in /of ?B: Help Ss sum-up: 形容词最高级的后缀一般为：est,而且在句子表达中，前面有the, 表范围时用 in 或of.设计意图：学生在说中观察，并让他们自己归类，他们会记得更清楚。5, reading big numbers.T: They are the number 1 in the world, but do you know how to read the number about them? Ss learn to read the numbers.Qo
13、molangma About 9,600,000 square kilometers in sizeThe Sahara1,025 meters deepThe Caspian Sea6,671 kilometers longThe Nile8,844.43 meters high T write the number in English on the board. All the students read together and sum-up: 把数组每隔三位分在一起，用逗号隔开，从右向左，第一个三位按hundred，第二个按thousand，第三个按million，递四个按billi
14、on读. （PPT屏幕显示）6,Listen and fill in the numbers from the box.Pre-listening. Ss read the number in groups.While listening, Ss listen for the first time and number 1-4 in the order they hear them. For the second time, Ss fill in the blanks with the big numbers.After listening, Ss learns the usage of mu
15、ch+形容词比较级and as as by pictures on PPT.7, play a game. Ss work in group (5students one group), each one give out a large number, the others try to read out the numbers, they learn and help each other.设计意图：学生通过小组合作，互相帮助一起攻破难点。 8，Production: they share their work out, and teacher chooses one number(让学生有表达欲望的数字) and ask them to say some sentences by using comparative or su
