unit4Theearthisbecomingwarmer阅读课件PPT课件

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1、 What is it in the picture? Its a _made of glass.greenhouse What is it used for? Its used for_, especially during cold weather. growing plants 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 t

2、he plants can grow throughout the cold period. The earth is becoming warmer But does it matter?Reading hot ! ! ! Skim the title: THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?A.The earth. B. Global warming. C. Becoming warmer doesnt matter. Look at the title and the structure of the article.A.Ne w

3、spape r B. Nove l C. Magazine Guess Features of This Magazine Article 1 title2 opening paragraph3 two graphs4 main text in two columns Look at the title and the structure of the article.A.Ne wspape r B. Nove l C. Magazine Read the title and the opening paragraph, then answer the following questions:

4、1. Who wrote the article?2.What is the name of the magazine?Fast Reading Sophie ArmstrongEarth Care1. Who wrote this article?2. What is the name of the magazine? The organization of the article: IntroductionA titleBodyConclusion Skim : Para. 1 Para. 2-3Para. 4-6 Para. 7 Match the main idea of each p

5、art: Careful reading Human activity or natural phenomenon What has caused global warming? :Para.2 What can we learn from graph1?Graph 1 shows the temperature difference on average from 1860 to 2000.It shows the temperature increase of one degree Fahrenheit between 1860 and 2000. 2.Translate the whol

6、e paragraph into Chinese.毫无疑问，地球是在变暖，而地球变暖正是人类活动导致而成的，并非是一种无规律的自然现象。 How has global warming come about?:Para.3 Illustrate causes/reasons by giving examples To begin with,the increase of the earths temperature is due to_. the burning of fossil fuels In addition, some byproducts of the burning process

7、 are called_, the most important one of which is_.“ greenhouse” gases carbon dioxide green house effect Carbon-dioxide The greenhouse gases include Carbon-dioxide, methane, water vapour. Greenhouse effect is a natural p . Greenhouse gases in the atmosphere can warm the earth by trapping heat energy.

8、 But the problem begins when we add huge q of extra carbon dioxide to the atmosphere by burning fossil f . Therefore, more heat energy is t in the atmosphere. It is the increased amount of carbon dioxide that is r in global warming. Fill in the blanks about the causes of Greenhouse effect.henomen n

9、uantitiesuels rapped esulting What do you think of the greenhouse effect?Greenhouse effect is necessary for us. But too many greenhouse gases will cause the globe to be too warmer. Charles Keelings measurements :Para.4People accept Charles Keelings data because he took accurate measurements. The gra

10、ph shows that Charles Keeling 1997It shows the carbon dioxide content in the atmosphere from 1957 to 1997. What does Dr. Janice Foster say?:Para.5Data She says that over the next _ years the amount of warming could be as low as_ to _ degrees Celsius ,but it could be as high as_ degrees. 1001 1.5 5 D

11、r Janice Foster George Hambleyscientists are debating over the possible effects of greenhouse gases. Please express their different opinions. Different attitudes Attitudes to the RiseopinionsThe _ that the temperature increases by five degrees would be a _ and it could be very _. We should not worry

12、 about it. Any warming will be _ with few bad_. It is actually a _ thing.trend serious mildenvironmentalpositiveJaniceFoster George Hambleycatastrophe consequences 1. cause the sea level to rise2. severe storms3. droughts/floods4. famines5. the spread of diseases6. disappearance of species Positive

13、effects Negative effects 1. cause the sea level to rise2. severe storms3. droughts/floods4. famines5. the spread of diseases6. disappearance of species Positive effects Negative effects 1. make plants grow faster2. crops will produce more3. a greater range of animals4. make life better :Para.7conclu

14、sionIt is clear what the effects of global warming will be.Use questions, leaving readers to think over the issue DebateA BA : We shall do something about global warming. B: We shall do nothing about global warming.The earth is becoming warmer does it matter? What can we do about global warming? On

15、one hand, we should protect our environment. We should make efforts to control all kinds of pollution. On the other hand, we should save energy and make full use of every bit of energy. Global warming is not a problem that can be ignored. We should do something to avoid the risks ahead. As students,

16、 we should start from leading a low-carbon daily life. For example, at home, we can turn off the running water while brushing our teeth. On the way to school, we can ride a bike. And at school, we can recycle the paper. There are many things we can do to help. And please remember, no matter how smal

17、l these things may look, your contribution counts! United, we can make a big difference! Love our planet! Love life! Start from every little bit to fight against global warming. Skim the title: THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?A.The earth. B. Global warming. C. Becoming warmer doesnt

18、matter. Read the title and the opening paragraph, then answer the following questions:1. Who wrote the article?2.What is the name of the magazine?Fast Reading 2.Translate the whole paragraph into Chinese.毫无疑问，地球是在变暖，而地球变暖正是人类活动导致而成的，并非是一种无规律的自然现象。 In addition, some byproducts of the burning process

19、are called_, the most important one of which is_.“ greenhouse” gases carbon dioxide Attitudes to the RiseopinionsThe _ that the temperature increases by five degrees would be a _ and it could be very _. We should not worry about it. Any warming will be _ with few bad_. It is actually a _ thing.trend

20、 serious mildenvironmentalpositiveJaniceFoster George Hambleycatastrophe consequences :Para.7conclusionIt is clear what the effects of global warming will be.Use questions, leaving readers to think over the issue On one hand, we should protect our environment. We should make efforts to control all kinds of pollution.