Book6 Unit 4 Global Warming
The earth is becoming warmer-But does it matter?教学设计Learning objectives：(目标导引)
1.Through fast-reading and careful-reading ,most students are able to correctly find out some detailed information of global warming and sum up the main idea of the whole text .
2.70% students will be able to grasp the usages of the following words /phrases and sentence pattern : subscribe, ,come about, result in , a quantity of , 含蓄虚拟语气结构。
3.Most students will be able to understand the importance of saving energy and protecting environment.
PartⅠ Pre-reading
PartⅡWhile-reading（目标落实）
Step1 Fast reading
Task1. Go through the passage quickly and silently, and then answer the following questions.
What is the main topic of the article?
评价方案：教师提问，学生集体回答
Task2. Who wrote the magazine article?
What is the name of the magazine?
评价方案：学生自主找寻信息，展示答案，学生互评
Step2 Careful-reading
Task1. Read the passage again, and then judge the statements true or false.
1. The temperature in the last century did not seem to increase much.
2. Everyone believes that global warming is caused by the activities of humans.
3. Janice Foster believes that she can measure the future global rise in temperature.
4. The rise in carbon dioxide is causing a steady increase in global warming.
5. George Hambley believes that global warming will do good rather than
harm to the earth.
6. It is clear what the effects of global warming will be.
评价方案：学生自主阅读，找寻细节，判断并合理解释，学生评价
Step3 Detailed-reading
Task1 Read the text and fill in the blanks.
Scientists
Opinion
Janice Foster
◆ We need ______ like carbon dioxide, methane and water vapour, but if we add huge ___________ extra carbon dioxide to the atmosphere by burning fossil fuels, it will cause the ________________ to go up.
Janice Foster
◆ Over the next 100 years the amount of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high as 5 degrees Celsius.
◆ An increase of five degrees would be a ___________.
George Hambley
◆ Believes that we shouldn’t worry about __________ of carbon dioxide in the air.
◆ Predicts that any warming will be mild with few bad environmental ____________.
◆ ______ that more carbon dioxide is actually a ________ thing, which will make life for human beings better.
评价方案：学生自主阅读，独立完成，展示答案，教师评价
Part Ⅲ Post-reading Group discussion
What should we do to help reduce the global warming?
评价方案：小组合作，展示交流，学生评价
Part Ⅳ Language points
1. Subscribe vi. 同意；捐赠；订阅 vt. （签署）文件；捐助
subscribe to 赞同; 订阅; 捐赠
subscribe sth to sb 向…..捐赠
【跟踪练习】
Do you _________________ to go out for a picnic this weekend?
你是否同意他周末出去野餐的想法？
I have _______________ several magazines recently.最近我订阅了几份杂志。
2. So how has this come about and does it matter?
come about 是不及物短语，意为“发生”。
【跟踪练习】
Please tell me how the accident _____. I am still in the dark.
A. came by B. came out
C. came to D. came about
3. result in 导致, 造成
eg. David’s carelessness resulted in his failure
result from 起因于，由于
eg. The development of the city results from its tourist attractions.
【跟踪练习】用适当的介词填空。
1). Max’s success resulted _____ accepting the advice of his teacher.
2). The excellent class atmosphere resulted ____ the increase in knowledge gained by students.
4. quantities of
quantities of 大量的，其后既可以跟可数名词，也可以跟不可数名词。
1）. Rose owns quantities of books.
2）.In summer, quantities of fruit and vegetables are preserved in the fridge.
【拓展】当“quantities of / a quantity of + 名词”作主语时，谓语动词的数取决于quantity的数，而与所修饰的名词无关。
1）. There is a large quantity of snow in this area.
2）. There are quantities of snow in this area.
【拓展练习】根据汉语提示，补全下列句子。
1). Large quantities of beer __________________ (已被售出) in this shop.
2). __________________________________ (大量的学生) crowded into the library
5. Without the ‘green house effect’, the earth would be about thirty-three degrees Celsius cooler than it is.
如果没有温室效应，地球会比现在冷33℃。
▲这是一个含蓄虚拟条件句
应该注意有时假设的情况并不以条件从句形式表示出来，而是通过一个介词短其他方式表示。常用的词或短语有：without, but for, but that, otherwise, or, but等。
【拓展练习】
1).Without your help (= If we had not had your help), we_______________________.
要是没有你的帮助，我们是不会成功的。
2). ___________electricity (= If there were no electricity), there would be no modern industry. 要是没有电，就不会有现代工业。
评价方案：学生自主思考，独立完成，展示答案，教师精讲点拨
PartⅤ Consolidation and Summary (巩固总结)
Task1: 阅读下面材料，在空白处填入适当的内容。
The earth is becoming warming and all scientists 1_________ ____ the view that the increase in the earth’s temperature is due to the burning of fossil 2_______. Some 3___________ of this process are called4 ____________ gases, the most important one of which is 5__________________. We need these gases, but the problem begins when we add huge 6_______________ extra carbon dioxide into the atmosphere. It means that more heat energy 7________ to be trapped in the atmosphere causing the global temperature to 8___________.
However, the attitude of scientists towards this rise is completely different. On the one hand, Dr. Foster thinks that the9 __________ which increases the temperature by 5 degrees would be a 10_____________. On the other hand, George Hambley, who are 11_________________ this view, believe that we should not worry about high levels of carbon dioxide in the air. They predict that any warming will be 12________ with few bad environmental 13 _____________. But no one really knows the effects of global warming.
评价方案：学生独立完成，板演，学生互评。
Task2 Finish the following exercises.（目标达成）
1. In summer, ___________(大量的)fruit and vegetables are preserved in the fridge.
2. result in; result from(选词填空)
a. The accident ___________ the death of three people.
b. His failure ______________ not working hard enough.
3.同义句转换
I don’t know how the accident happened.
I don’t know how the accident _______________.
4. The factory turns out a large number of paper products.
The factory turns out ___________________/ ___________ paper products.
5. I ________________(subscribe) to News Week for many years.
评价方案：学生自主完成，展示结果，教师评价
Part VI Homework
1. Read the passage again and review the new words and expressions.
2. Preview Using Language -- WHAT CAN WE DO ABOUT GLOBAL
WARMING?
评测练习
Consolidation (巩固练习)
Task1: 阅读下面材料，在空白处填入适当的内容。
The earth is becoming warming and all scientists 1_________ ____ the view that the increase in the earth’s temperature is due to the burning of fossil 2_______. Some 3___________ of this process are called4 ____________ gases, the most important one of which is 5__________________. We need these gases, but the problem begins when we add huge 6_______________ extra carbon dioxide into the atmosphere. It means that more heat energy 7________ to be trapped in the atmosphere causing the global temperature to 8___________.
However, the attitude of scientists towards this rise is completely different. On the one hand, Dr. Foster thinks that the9 __________ which increases the temperature by 5 degrees would be a 10_____________. On the other hand, George Hambley, who are 11_________________ this view, believe that we should not worry about high levels of carbon dioxide in the air. They predict that any warming will be 12________ with few bad environmental 13 _____________. But no one really knows the effects of global warming.
Task2 Finish the following exercises.（目标达成）
1. In summer, ___________(大量的)fruit and vegetables are preserved in the fridge.
2. result in; result from(选词填空)
a. The accident ___________ the death of three people.
b. His failure ______________ not working hard enough.
3.同义句转换
I don’t know how the accident happened.
I don’t know how the accident _______________.
4. The factory turns out a large number of paper products.
The factory turns out ___________________/ ___________ paper products.
5. I ________________(subscribe) to News Week for many years.
课件37张PPT。人教课标
高二 选修 6
Unit 4Unit 4 Global warmingThe earth is becoming
warmer-But does it matter?Learning objectives(目标导引)
1.Through fast-reading and careful-reading ,most students are able to correctly find out some detailed information of global warming and sum up the main idea of the whole text .
2.70% students will be able to grasp the usages of following words /phrases and sentence pattern : subscribe, ,come about, result in , a quantity of , 含蓄虚拟语气结构。
3.Most students will be able to understand the importance of saving energy and protecting environment. 1.What is the greenhouse made of and used for?Pre-reading A greenhouse is made of glass
and is used for growing plants,
especially during cold weather.2.How does it work?
The air inside is warm because the glass traps the heat from the sun and keeps it from escaping. This makes the greenhouse heat up and so the plants can grow
throughout the
cold period.3.What are the “greenhouse gases”?
In the atmosphere surrounding the earth there are gases called “greenhouse gases”, including carbon dioxide, methane (甲烷, 沼气) and water vapor.4.What do you think greenhouse
gases do?
They trap the heat of the sun and keep the air surrounding the earth warm. 1. What is the main topic of the
article?
Global warming/ the warming of
the earth.Fast-reading2.Who wrote the magazine article?
What is the name of the magazine?
Sophie Armstrong wrote the magazine article. The name of the magazine is Earth Care.Ⅱ. Read the passage again, and then judge whether the following statements are true or false. Careful-reading1. The temperature in the last century did not seem to increase much.
2. Everyone believes that global warming is caused by the activities of humans.
3. Janice Foster believes that she can measure the future global rise in temperature.4. The rise in carbon dioxide is causing a
steady increase in global warming.
5. George Hambley believes that global
warming will do good rather than
harm to the earth.
6. It is clear what the effects of global
warming will be.Detailed-Reading Read the article in detail and finish the following task.Read the text carefully and fill in the blanks.gasesquantities ofglobal temperaturecatastrophehigh levels consequencesStatespositiveWhat should we do to help reduce the global warming? Some suggestions
*Turn the lights, the TV, the computer off if you are not using them.
*Walk or ride a bike if you can.
*Recycle cans ,bottles, plastic bags and newspapers if circumstances allow you to.
*Buy things that are economical with energy.
*Plant trees in your garden or your school yard.1. Subscribe vi. 同意；捐赠；订阅 vt. （签署）文件；捐助
subscribe to 赞同; 订阅; 捐赠
subscribe sth to sb 向…..捐赠Do you _________________ to go out for a picnic this weekend?
你是否同意他周末出去野餐的想法？
I have _______________ several magazines recently.最近我订阅了几份杂志。language Pointssubscribe to his ideasubscribed to2. So how has this come about and does it matter?come about 是不及物短语，意为“发生”。Please tell me how the accident _____. I am still in the dark.
A. came by B. came out
C. came to D. came about
3. result in David’s carelessness resulted in his failure.导致，造成= lead toresult from 起因于，由于
e.g. 1. The development of the city results
from its tourist attractions. 用适当的介词填空。
Max’s success resulted _____ accepting
the advice of his teacher.
2. The excellent class atmosphere resulted ____ the increase in knowledge gained by students.from in4. quantities of
quantities of 大量的，其后既可以跟可数名词，也可以跟不可数名词。In summer, quantities of fruit and vegetables are preserved in the fridge.e.g. Rose owns quantities of books. 当“quantities of / a quantity of + 名词”作主语时，谓语动词的数取决于quantity的数，而与所修饰的名词无关。e.g. 1. There is a large quantity of snow in this area.
2. There are quantities of snow in this area. 根据汉语提示，补全下列句子。
Large quantities of beer _____________
(已被售出) in this shop.
2. __________________________________ (大量的学生) crowded into the library.have been soldQuantities of / A quantity of students
＊ Without the ‘green house effect’, the earth would be about thirty-three degrees Celsius cooler than it is.
如果没有温室效应，地球会比现在冷33℃。
▲这是一个含蓄虚拟条件句
应该注意有时假设的情况并不以条件从句形式表示出来，而是通过一个介词短语或其他方式表示。常用的词或短语有：without, but for, but that, otherwise, or, but等。
长难句分析e.g. Without your help ( = If we had not had your help), we_______________________.
要是没有你的帮助，我们是不会成功的。 could not have succeedede.g. _________electricity (= If there were no electricity), there would be no modern industry.
要是没有电，就不会有现代工业。But forConsolidationConsolidation阅读下面材料，在空白处填入适当的内容。The earth is becoming warming and all scientists 1_________ ____ the view that the increase in the earth’s temperature is due to the burning of fossil 2_______. Some 3___________ of this process are called4 ____________ gases, the most important one of which is 5__________________. We need these gases, but the problem begins when we add huge 6_______________ extra carbon dioxide into the atmosphere. It means that more heat energy 7________ to be trapped in the atmosphere causing the global temperature to 8___________..subscribetofuelsbyproductsgreenhousecarbon dioxidequantities oftendsgo upHowever, the attitude of scientists towards this rise is completely different. On the one hand, Dr. Foster thinks that any9 __________ which increases the temperature by 5 degrees would be a 10_____________. On the other hand, George Hambley, who are 11_________________ this view, believe that we should not worry about high levels of carbon dioxide in the air. They predict that any warming will be 12________ with few bad environmental 13 _____________. But no one really knows the effects of global warming. trend catastropheopposed tomildconsequences1. In summer, ___________(大量的)fruit and vegetables are preserved in the fridge.
2. result in; result from
The accident ___________ the death of
three people.
b. His failure ______________ not working hard enough.resulted inresulted from（目标达成）Finish the following exercises.
quantities of3.同义句转换
I don’t know how the accident happened.
I don’t know how the accident _________.
4. The factory turns out a large number of
paper products.
The factory turns out ________________
_________ paper products.
5. I ________________(subscribe) to News Week for many years.
came aboutlarge quantities of/ a lot ofhave subscribedWhat have we learned in this class?We have learned :
· some detailed information of global warming.
· some key words，phrases and sentence patterns : subscribe, ,come about, result in ,a quantity of , 含蓄虚拟语气结构。
· the importance of saving energy and
protecting environment. Summay Homework
1. Read the passage again and review
the new words and expressions.
2. Prepare the debate in groups.
3. Preview Using Language -- WHAT
CAN WE DO ABOUT GLOBAL
WARMING?课后反思
本节课是第六模块Unit4的阅读部分：Global warming. 我将这节课设计为目标导引、阅读导入、阅读、讨论、重难点讲解和巩固总结六个步骤。课后经过各位老师的点评，反思总结如下：
成功之处 一.引导学生一步步从阅读文章表层意思，到探讨深层意思。例如，Fasting reading 中设计回答问题，包括文意概括，然后到Careful reading中判断正误，最后总结全文，使学生从表面理解升华到深层理解，基本达到预期效果。学习目标也定位于理解文章，解读课文，在教学过程中，我提出一些难度适当的问题让学生思考、研究、探讨，鼓励他们进行合作交流。对于学生的回答，并没有咬文嚼字，而是给予充分的肯定，使学生内心充满自信和成功的喜悦。学生的合作小结，既尊重了学生的个性，又通过展示我的建议而保证了知识的精确性，有助于学生梳理知识，使其系统化。
二．借以利用课件和多媒体等符合学生心理年龄和兴趣趋向的教学手段来丰富学生的知识面，调动学生延展自己的思维，扩充自己的知识储备。
三．通过最后巩固总结这一环节引发学生对本节课的深入思考，进一步巩固所学知识。
不足之处
一．采用谈话方式导入虽然自然亲切，拉近了师生之间的情感距离，学习气氛宽松。?但是导入方式有点单一，不具有新颖性，独特性。
二．阅读后回答问题那部分，设计问题形式应该再多样化一些，这样才能在各方面给与学生锻炼。练习题给学生的时间不够充足，了解到有一些学生并未能在短时间内回答完所有问题。
三．在课堂上思路不够灵活。同时在设计时安排了太多的信息和内容，完成起来略显时间局促。
在以后类似的教学过程中，放手给学生，把课堂还给学生，给学生自由发挥的空间，是我一直在追求的目标。学生的潜力是无穷的。时刻记住：教师为引导，学生为主体。创设情景，激发情意，启迪学生思维，发挥学生的主动性和创造力，鼓励学生探索研究，这也是我在以后教学的追求目标。
