人教版八年级下册 Unit7 What's the highest mountain in the world？ SectionA 1a-2d 教案

Unit 7　What’s the highest mountain in the world 第一课时　Section A 1a—2d
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:square,meter,deep,desert,population, Asia,feel free,tour,tourist,wall,amazing,ancient,protect,wide,as far as I know
4.学会含有大数字的度量结构的表述,并掌握用不同句式表达比较级和最高级。
1.熟记短语和相关词汇。
2.学习大数字的表达。
3.比较级和最高级的运用。
1.学习并掌握表达物体的长、宽、高、深和面积。
正确运用形容词和副词的比较级和最高级。
2.学会含有大数字的度量结构的表述。
3.提高听说技能。
本课教学内容是八年级下Unit 7 第一课时,主要通过图片或视频引入本单元的教学话题,使学生对将要学习的知识充满期待。通过听力练习、对话练习,提高学生的语言实践能力。
任务重点是最高级的构成和四个世界之最,通过读练,跟着听力模仿大数字的读法,鼓励学生多说多练,增强对大自然的探究兴趣。
StepⅠ.Lead in
Leading in 【情景1】
　Qomolangma　　　　　 　the Nile
T:(Students look at the first picture.) What is it
Ss:It’s Qomolangma.
T:Where is it And how high is it
Ss:In China.It is 8,844.43 meters high.
T:Please look at the next picture.And how long is the Nile
Ss:It is 6,671 kilometers long.
T:Great! This class we’ll talk about the length,height,depth and the area of the nature.Now let’s come to 1a.
[设计意图]　用图片调动学生情感,激发学生思考,直接导入新授。
Leading in 【情景2】
T:Hello,boys and girls!Look at the pictures.The first picture is the Yangtze River.The next picture is the Nile.We know the Yangtze River is the longest river in China.Do you know which river is the longest one in the world It’s the Nile.We want to know more about the length,height,depth and the area of the nature.Now let’s come to 1a.
[设计意图]　通过图片和老师自述的形式,亲切、自然地导入新授。
Step Ⅱ.Presentation
Work on 1a.
　　　Qomolangma　　　　　 　the Sahara
the Caspian Sea　　　　　 　the Nile
T:Boys and girls!Look at the four pictures.What’s the highest mountain in the world
S1:Qomolangma.
T:How high is it
S2:It’s 8,844.43 meters high.
T:What’s the biggest desert in the world
S3:It’s the Sahara.It’s about 9,600,000 square kilometers in size.
T:What’s the deepest salt lake in the world
S4:It’s the Caspian Sea.It’s 1,025 meters deep.
T:What’s the longest river in the world
S5:It’s the Nile.It’s 6,671 kilometers long.
Look at the photos and talk about “How big/high/long is… ” and help the students to answer: It’s…meters/kilometers/…big/high/long/deep.
Practice in pairs using the information in 1a.
【Keys】　1a:Qomolangma-8,844.43 meters high;The Sahara-about 9,600,000 square kilometers in size;The Caspian Sea-1,025 meters deep;The Nile-6,671 kilometers long
[设计意图]　通过对话交流的形式引出要点句型:—What’s the highest/deepest/biggest/longest…in the world —It’s…meters/kilometers/…big/high/long/deep.完成听力前的准备活动。
Step Ⅲ.While-listening activities (1)
Task 1:Listen for the general idea of 1b.
The main idea of the conversation is about 　　　　.
A.Qomolangma
B.some geographical facts about the world
C.the Nile
Task 2:Listen again 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.
The following language point should be explained.
☆教材解读☆
Qomolangma is higher than any other mountain in the world.
higher than any other mountain比其他任何山都高,any指任何一个,后接单数名词。这种比较级形式可以替换为最高级形式,即:形
容词比较级+than any other+单数名词=最高级+单数名词。原句相当于Qomolangma is the highest mountain in the world.。
This book is more difficult than any other book here.
=This book is the most difficult book here.这些书当中这本最难。
【拓展】　表示最高级的结构还有:形容词比较级+than the other+复数名词。
Asia is bigger than the other continents on the earth.亚洲是地球上最大的洲。
Task 3:1c Use the information in 1b to make conversations.Like this:
A:What’s 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.
【Keys】　Task 1:B　Task 2:1.higher　2.the biggest　3.the deepest　4.the longest
[设计意图]　通过初听培养学生听取大意的能力,而细听主要是培养学生听细节、听重点的能力,听后的交际练习达到了语言输出的目的。
Step Ⅳ.While-listening activities (2)
Task 1:Listen and find the general idea of 2a&2b.
T:We’ve learned about some world facts;now we are going to learn about some facts of China.
The main idea of the conversation is about 　　　　.
A.the Yangtze River in China
B.the history of China
C.some facts about China
Task 2:Listen for the specific ideas.
1.Listen and number the facts(1- 4) in the order you hear them in 2a.
2.Listen again and fill in the blanks in 2a with the numbers in the box.
6,300　　5,000　　　5,464　　　300
The Yangtze River is about 　　　　kilometers long and the Yellow River is 　　　　kilometers long.
China has the biggest population in the world.It’s a lot bigger than the population of the US.
China is over 　　　　years old.It has a much longer history than the US.The US is not even 　　　　years old.
China is almost as big as the US,and it is the biggest country in Asia.
Task 3:Make conversations using the information in 2a.For example:
A:Did you know that China is one of the oldest countries in the world
B:Yes,I did.It’s much older than my country.
A:Did you know that the Yangtze River is the longest river in China
B:Yes,I did.It’s about 6,300 kilometers long.
B:Wow! That’s long!
The following language points should be explained.
☆教材解读☆
1.China has the biggest population in the world.It’s a lot bigger than the population of the US.
◆population意为“人口”,作主语时谓语动词用单数。但是“分数/百分数+of the population”作主语时,谓语动词用复数。
The population of the city is three million.
这个城市的人口是三百万。
Three fourths of the population in the city are from other parts of the country.这个城市四分之三的人口来自全国其他地方。
What’s the population of China
=How large is the population of China
中国有多少人
【拓展】　表示“某地有多少人口”用…has a population of…或The population of… is…。
The city has a population of about six million.
=The population of the city is about six million.这个城市大约有六百万人口。
◆ a lot bigger大多了,bigger是比较级,前面用a lot修饰。a lot,a little,much,a bit,still,even,far等可以用来修饰形容词或副词的比较级,表示程度,起强调作用。
My room is a little smaller than yours.
我的房间比你的稍小一点儿。
　　2.China is almost as big as the US,…
两者的同级比较用as…as,表示“与……一样”,否定形式为not as/so … as,中间应接形容词/副词的原级,不能用比较级。
Millie is as slim as her cousin.
米莉和她的表姐一样苗条。
He is not as/so tall as his father.
他不如他父亲高。
I think English is as important as math.
我认为英语与数学一样重要。
3.Did you know that China is one of the oldest countries in the world
“one of the +最高级+名词复数”意为“最……之一”。
He is one of the most famous writers in China.他是中国最著名的作家之一。
【Keys】　Task 1:C　Task 2:1.4 2 1 3　2.6,300;5,464;5,000;300
[设计意图]　本部分的内容帮助学生听出对话的大意再去完成后面对应的细节题,最后是培养语言交际能力。
Step Ⅴ.Reading and role-play 2d
Task 1:Read the conversation and answer the questions.
1.What’s the conversation about
2.How long is the Ming Great Wall 　
3.What does the guide say about the wall
Task 2:Explain some main points in the conversation.
☆教材解读☆
1.Feel free to ask me anything on today’s Great Wall tour.
feel free是英语口语中一个常用表达。feel free to do sth.表示“无拘束做某事,按照自己的意愿去做某事”。
If you have any questions,please feel free to ask me.如果有任何问题,请随意提问。
2.As far as I know,there are no other man-made objects as big as this.
◆as far as I know是一个固定的表达方式,还可以说so far as I know,意思是“据我所知”。
As far as I know,he will be away for three months.据我所知,他将离开三个月。
◆man-made人造的,为形容词性的合成词。类似的有:good-looking相貌好看的;hard-working勤劳的;well-known著名的;fast-food专门提供快餐服务的。
Task 3:Read the conversation after the teacher.
Task 4:Practice the conversation with their partners.Then let some pairs act out the conversation.
Task 5:Fill in the blanks.
Guide:Feel free　　　　 me anything 　　　　today’s Great Wall 　　　　.
Tourist 1:How long is the wall
Guide:Ah,　　　　popular question! If we’re only talking about the 　　　　from the Ming Dynasty,it’s about 8,850 kilometers 　　　　.This makes it the 　　　　wall in the world.
Tourist 2:Wow,that’s 　　　　! Why did the　　　　 emperors 　　　　the wall
Guide:The main reason was to 　　　　their part of the country.As you can see,it’s quite tall and wide.As 　　　　as I know,there are no other man-made objects as 　　　　as this.
Tourist 3:Is Badaling 　　　　of the Ming Great Wall
Guide:Yes,it’s the most 　　　　part.
【Keys】　Task 1:1.It’s about a tour to the Ming Great Wall.　2.It’s about 8,850 kilometers long.　3.It’s quite tall and wide./ It’s the longest wall in the world.　Task 5:to ask,on,tour,the most,parts,long,longest,amazing,ancient,build,protect,far,big,part,famous
[设计意图]　首先读对话,回答任务题,加深对对话的理解,教师讲解要点,学生练,在阅读、会话交流的语言实践过程中将综合运用语言的能力提高到一个新的、更高的层次;其次,通过对对话的挖空填空,进一步对对话有了更深的理解,增强了学生的交际能力和运用知识的能力。
Step Ⅵ.Exercises:the end-of-class test
Ⅰ.用所给词的适当形式填空
1.India is one of the 　　　　(old) countries in Asia.
2.Jack’s handwriting is as 　　　　(good) as Mike’s.
3.What’s the 　　　　(high) mountain in the world
4.Please feel free 　　　　(call) me up any time until half past nine at night.
5.Qomolangma is 　　　　(high) than any other mountain in the world.
Ⅱ.根据汉语意思完成句子
1.就我所知,杰克有一个孪生姐姐。
　　　　　　　　　　　　I know,Jack has a twin sister.
2.中国的人口是多少
　　　　　　　　　　　　of China
3.撒哈拉沙漠是世界上最大的沙漠。
The Sahara is 　　　　　　　　desert in the world.
4.死海约深392米。
The Dead Sea is about 392　　　　　　　　.
5.随便问我关于长城的事情吧。
　　　　　　　　　　　　ask me anything about the Great Wall.
　　【Keys】　Ⅰ.1.oldest　2.good　3.highest　4.to call　5.higher
Ⅱ.1.As far as　2.What’s the population　3.the biggest　4.meters deep　5.Feel free to
　　[设计意图]　通过当堂检测,了解学生的学习情况,有助于以学定教,增强学生学习的信心。