Unit4globalwarming 完整版教学设计.docx
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Unit4globalwarming 完整版教学设计.docx
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Unit4globalwarming完整版教学设计
Unit 4 Global warming
【learningaims】
1.训练阅读能力以及提取文章信息的能力(extract information)
2.了解日常生活中有关节能减排的小方法,培养低碳环保的生活理念。
3. 通过本节课的学习让学生能够制作出一幅英文海报。
【Importantpoints】
1.1.训练阅读能力以及提取文章信息的能力(extract information)2.2.了解日常生活中有关节能减排的小方法,培养低碳环保的生活理念。
【Difficultpoints】
1.通过本节课的学习让学生能够制作出一幅英文海报。
预习案
【单词回顾】
1、_____ n. 承诺;交托 ____ vt. 犯罪;承诺 2、___ vt.陈述;说明 ____ n.国家 3、_______ n. 生长;增长_____vi. 生长 4、______ n. 生存;存在 ______vi.存在 5、_______ n. 贡献 ______ vt. 捐助 6、_____ n. 分歧;不一致 _____ vi. 不同意 7、_________ n. 结果;后果;影响 8、________ n. 种类;范围 9、_________ n. 环境;情况 10、______ adj. 平均的;普通的;普遍的 11、________ vt. 消费;消耗 12、_______adj. 温和的;温柔的 13、_______ vi.照顾;趋向 &vt. 照顾;护理 14、______ vt. 拥护;提倡;主张
重点短语:
1、_________ 同意;订阅 2、__________ 发生;造成 3、________ 大量的 4、_________ 与……相比 5、__________导致
6、__________ 反对 7、_________ 继续 8、_________ 涨价;上涨 9、__________代表 10、________ 大体上;基本上
探究案
Period 2 Reading
Task 1.Skimming
(1)Who wrote the magazine article?
What is the name of the magazine?
_____________________________________________________________
(2)What are the names of the three scientists mentioned in the article?
Do they agree with one another?
(3). What do they think about global warming?
Do they agree with one another?
_____________________________________________________________
Task 2.Scanning
(1).How much did the temperature rise in the 1900s?
A. One degree Fahrenheit B. One Celsius C. Two degrees
D. Thirty degree Celsius
(2).What causes the temperature of the earth to increase?
A. Cutting trees B. Wasting the farmland
C. Running out of the river water D. Burning fossil fuels
(3).Who accurately measured the amount of carbon dioxide in the atmosphere from 1957 to 1997?
A. Dr. Janice Foster. B. Fahrenheit.
C. Charles Keeling D. George Hambley
(4). George Hambley believes that more carbon dioxide is actually_____.
A. a bad thing B. a dangerous thing. C. a comparative thing D. a positive thing
(5).What is the main idea of this passage?
A. Global warming. B. Flood phenomenon.
C. Making methane. D. Making greenhouses
Task 3.Careful reading
Read the passage carefully and judge whether the statements are true(T) or false(F).
Janice Foster believes that global warming is caused by burning fossil fuels.( )
Natural gas is a greenhouse gas.( )
Carbon dioxide is a byproduct of burning fossil fuels.( )
People accept Charles Keeling's data because he took accurate measurements.( )
Flooding could be one of the effects of future global warming.(
George Hambley believes scientists are just guessing about the effects of global warming.( )
George Hambley is worried about the effects of carbon dioxide on plant growth.( )
It is clear what the effects of global warming will be.( )
Task 4.Structure analyzing
matchthepartwithmainidea
Part1 A It's up to readers to think and decide whether people
should do something about global warming or not.
Part 2 B To illustrate how global warming comes about.Part 3 C To introduce a debate over the issue of global warming.
Part 4 D To list two different attitudes amongscientists towardsglobal
warming.
Task 5 Post-reading.
The earth is becoming warmer and it is human activity _______1 has caused this global warming .All scientists_________2 to the view that the increase in the earth’s temperature is _________3 to the burning of fossil fuels. Some byproducts of this process, especially carbon dioxide, are called ‘greenhouse’ gases. Some small amounts of gases in the atmosphere_________4 heat from the sun and therefore warm the earth .So we need those gases .However, the problem begins when we add huge _________5 of extra carbon dioxide into the atmosphere. It caused the global temperature to __________6 up. A scientist __________7 Charles Keeling made accurate measurements of the amount of carbon dioxide in the atmosphere. But how high will the temperature _________8 go?
_________9 if we start reducing the amount of carbon dioxide and other greenhouse gases, the climate is going to _______10 on warming for decades or centuries. No one knows the effects of global warming.
Period 3 Grammar
I. 句式讲解
1. 强调句型的基本结构形式
It is/was + 被强调部分+ that + 句子的其余部分 当被强调部分是人时that也可以换成who。
原句:
Professor Liu teaches us English this year.
强调主语:
It is Professor Liu who teaches us English this year. 强调宾语:
It is English that Professor Liu teaches us this year. 强调状语:
It is this year that Professor Liu teaches us English. 2. 强调句型的特点
去掉It is (was) 及that (who) 后,在不添词、不减词后,剩下的部分能组成一个完整的句子。
这也是判断一个句子是否是强调句型的依据。
3. 强调句型的时态
如果原句中谓语动词使用的是现在或将来时间范畴的时态(一般现在时、现在进行时、现在完成/现在完成进行时、一般将来时、将来进行时、将来完成时等),用___________________。
如果原句中谓语动词为过去时间范畴的时态(一般过去时、过去进行时、过去完成时、过去将来时等),则用___________________。
4. 强调句型的一般疑问句式
Is/Was it + 被强调部分+that+句子的其余部分。
_____________________________________. 是刘教授今年教我们英语吗?
(强调句
5. 强调句型的特殊疑问句式
特殊疑问句+is/was it+被强调部分+that+句子的其余部分。
_____________________________________. 今年教我们英语的是谁?
_____________________________________. 刘教授今年是教我们什么的?
6. not…until句型的强调句型
当被强调的是not…until句型时,应将not置于until之前,主句由否定句改为肯定句。
如:
He didn’t’t leave until 11 o ’clock.他直到11点才离开。
_____________________________________.(强调not until时间状语)
训练案
A.对划线部分进行强调。
(1) The greenhouse effect gives the earth’s surface the average temperature of 15℃. _____________________________________________________________________.
(2) In the years ahead, the level of the sea could rise by several meters because of global warming.
____________________________________________________________________. (3) In the future outer space might provide us with new energy sources.
_____________________________________________________________________
B. 单项选择。
1. It was this village ___ I was brought up.
A. where B. that C. on which D. which
2. It was in this village ___ I was bought up.
A. where B. that C. on which D. which
3. Can it be in the drawer ___ you put your passport?
A. where B. in which C. there D. that
4. It was July 1, 1997 ___ saw the return of Hong Kong to the motherland.
A. that B. when C. which D. in which 5. It is two years __ I
joined the army.
A. before B. since C. that D. after
6. It was two years ___ I joined the army.
A. before B. since C. that D. after
7. It was not until 1920 ____ regular radio broadcast began.
A. while B. which C. that D. since
8. ___ is the fact that English is being accepted as an international language.
A. There B. This C. That D. It
9. It was about 600 years ago ___ first clock with a face and an hour hand was made.
A. that B. until C. before D. when
10. I hate ____ when people talk with their mouths full.
A. it B. that C. these D. them
Evaluation
习学案(10分)
自学任务 (10分)
合作学习 (10分)
展示 交流 (10分) 自我评价(25分)
加分
学生评价 总分
(备注:
○ 好 9-10分 ○ 较好 8-7分 ○ 一般 6-4 ○ 3-1分)
记分采用自我评分,以诚信为原则,希望大家能得出最客观的评价.请小组长把每位同学的得分相加并除以平均分得出本组最后得分,成绩交给科代表。
Homework
Ask the students to make a poster for their school that tells students various ways they can reduce the amount of carbon dioxide in the air. Tell students to give the poster a heading that will be eyecatching
and will make others want to read it.
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