选修六unit4课文原文和翻译ppt课件.pptx

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1、THE EARTH IS BECOMING WARMER-BUT DOES IT MATTER?全球在变暖这会带来什么影响吗？,Skimming,Skim the title: THE EARTH IS BECOMING WARMER BUT DOES IT MATTER?,What is the main topic?The earth. B. Global warming. C. Becoming warmer doesnt matter.,Where does this article most probably come from?,Newspaper B. Novel C. Maga

2、zine,During the 20th century the temperature of the earth rose about one degree Fahrenheit.在20世纪期间，地球温度大约升了华氏1度。That probably does not seem much to you or me, but it is a rapid increase when compared to other natural changes.这个数值对你我来说很可能是无所谓的，但是跟其他自然变化相比较而言，这却是一种快速的增长。So how has this come about and

3、does it matter?那么，这种温度的增长是怎么产生的呢？会产生什么影响呢？Earth Cares Sophie Armstrong explores these questions. “关爱地球”组织的索菲阿姆斯特朗就在探究这些问题。,compared to 与.比较；把.比作. come about 产生,come about,come about: take place; happen表示“发生、产生”，多指事情已经发生了，但还不知道为什么，常用于疑问句和否定句, 例:When Mother woke up, she didnt know what had come about.

4、 Ill never understand how it came aboutthat you were late three times a week.,Who wrote the article?,What is the name of the magazine?,Skim the first paragraph:,Sophie Armstrong,Earth Care,听录音,There is no doubt that the earth is becoming warmer (see Graph 1) and that it is human activity that has ca

5、used this global warming rather than a random but natural phenomenon.毫无疑问，地球是在变暖（见表一，略），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。,it is human activity that has caused this global warming rather than a random but natural phenomenon.,a random but natural 修饰phenomenon，译为 “随意的自然的现象”，but起一个语气转折的作用，可不译出。,rather tha

6、n 而不是She is a career woman rather than a housewife. 她是职业妇女而不是家庭主妇。rather than 在更大程度上These are political rather than social matters. 与其说这些是社会问题，不如说是政治问题。,Part II(Para2-3),Everyone believes that global warming is caused by the activities of humans.Janice Foster believes that she can measure the future

7、 global rise in temperature.Greenhouse Gases are totally bad.,F,T,F,All scientists subscribe to the view that the increase in the earths temperature is due to the burning of fossil fuels like coal, natural gas and oil to produce energy.所有的科学家赞同这种观点：人们为了生产能量而燃烧化石燃料（如煤、天然气和石油等），从而引起了地球温度的升高。Some bypro

8、ducts of this process are called greenhouse gases, the most important one of which is carbon dioxide.这个升温的过程的一些副产品就叫做“温室”气体，其中作用重要的就是二氧化碳。,1. Greenhouse gases refer to_.carbon dioxide B. the burning of fossil fuelsC. byproducts of the burning of fossil fuelsD. coal, natural gas and oil,scanning,Read

9、ing Comprehension IV,Dr Janice Foster explains: There is a natural phenomenon that scientists call the greenhouse effect.贾尼丝福斯特博士解释说： “有一种科学家称之为温室效应的自然现象。This is when small amounts of gases in the atmosphere, like carbon dioxide, methane and water vapour, trap heat from the sun and therefore warm th

10、e earth.这种现象发生在大气层中少量的气体（如二氧化碳、甲烷、水蒸气等）吸收太阳的热量，因而使地球变暖的时候。,2. Greenhouse effect _.A. is a natural phenomenon B. happens when theres too much carbon dioxide C. does great harm to human beingsD. makes life for human beings better,scanning,Reading Comprehension IV,Without the greenhouse effect, the ear

11、th would be about thirty-three degrees Celsius cooler than it is.如果没有这种温室效应，地球的温度将比现在的温度还要低33摄氏度左右。So, we need those gases. The problem begins when we add huge quantities of extra carbon dioxide into the atmosphere.因此，我们需要这些气体。当我们在大气层中增加了大量额外的二氧化碳时，问题就来了。It means that more heat energy tends to be tr

12、apped in the atmosphere causing the global temperature to go up.这意味着更多的热量被困在大气层中，从而引起全球温度上升。”,quantities of 大量的 tend to do sht倾向做某事 be trapped in 被困住 go up 上升,Fill in the blanks about the causes of Greenhouse effect.,henomenon,uantities,rapped,go up,Small,We know that the levels of carbon dioxide ha

13、ve increased greatly over the last 100 to 150 years. 我们知道，在过去100150年期间，二氧化碳的含量急剧增加了。 It was a scientist called Charles Keeling, who made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997. 有一位名叫查尔斯基林的科学家曾经把19571997年期间大气层中二氧化碳的含量作了精确的统计。 He found that between th

14、ese years the carbon dioxide in the atmosphere went up from around 315 parts to around 370 parts per million(see Graph 2).他发现，在这些年里，大气层中的二氧化碳含量从315/1000 000上升到370/1000 000。（见表二，略）,accurate measurements 精确的统计 the amount of .的数量,3. _ found out the amount of carbondioxide in the atmosphere from 1957 to

15、1977.A. Dr. Janice Foster B. Charles KeelingC. George Hambley D. Sophie Armstrong,Para 4. the levels of carbon dioxide have increased greatly over the last 100 to 150 years,1. How much has increased?,The carbon dioxide in the atmosphere went up from around 315 parts to around 370 parts per million.,

16、All scientists accept this data. 所有科学家都接受这个数据。They also agree that it is the burning of more and more fossil fuels that has resulted in this increase in carbon dioxide. 他们还赞同下述观点，正是由于越来越多燃烧化石燃料导致了二氧化碳的增加。 So how high will the temperature increase go? 那么气温会升到多高？ Dr Janice Foster says that over the ne

17、xt 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.福斯特博士说，在今后的100年里，全球变暖的量可能低到11.5摄氏度，但是也有可能高达5摄氏度。,Para 5. How high will the temperature go?,The amount of warming could be as low as 1 to 1.5 degrees Celsius, but it could be as high a

18、s 5 degrees.,However, the attitude of scientists towards this rise is completely different. 然而，科学家们在对待升温的态度上却是大不相同的。 On the one hand, Dr Foster thinks that the trend which increases the temperature by 5 degrees would be a catastrophe. 一方面，福斯特博士认为气温升高5度的趋势可能是一场大灾难，She says, We cant predict the climat

19、e well enough to know what to expect, but it could be very serious. 她说：“对于未来的气候，我们不可能做出精确的预测，但是那时的天气可能是很糟糕的。” Others who agree with her think there may be a rise of several metres in the sea level, 同意她的观点的其他科学家认为，全球变暖会导致海平面上升好几米；or predict severe storms, floods, droughts, famines, the spread of dise

20、ases and the disappearance of species. 也有人预言会出现严重的风暴、洪涝、干旱、饥荒、疫病和物种的灭绝。,On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air. 在另一方面，还有一些人，像科学家乔治汉布利，反对上面的观点，他们认为我们不必担心空气中会有高含量的二氧化碳。 They

21、predict that any warming will be mild with few bad environmental consequences. 他们预言说，变暖的情况不会很严重，对环境的影响也不会太坏。 In fact, Hambley states, More carbon dioxide is actually a positive thing. It will make plants grow quicker; crops will produce more; it will encourage a greater range of animals - all of whi

22、ch will make life for human beings better. 汉布利实际上是这样说的： “二氧化碳含量的增加实际上是件好事，它使植物成长更快，庄稼产量更高，还会促进动物的生长所有这些都能改善人类的生活。”a greater range of 更大范围的,The different ideas between Dr. Janice Foster & George Hambley,go up,catastrophe,very serious,positive,produce more,a greater range of animals,Does global warmin

23、g matter?,Positive effects,Negative effects,cause the sea level to risesevere stormsfloodsdroughtsfaminesthe spread of diseasesdisappearance of species,Positive effects,Negative effects,cause the sea level to risesevere stormsfloodsdroughtsfaminesthe spread of diseasesdisappearance of species,Positi

24、ve effects,Negative effects,make plants grow quickercrops will produce morea greater range of animalsmake life better,Greenhouse gases continue to build up in the atmosphere. 温室气体继续在大气层中聚集。Even if we start reducing the amount of carbon dioxide and other greenhouse gases, the climate is going to keep

25、 on warming for decades or centuries. 即使我们开始减少二氧化碳和其他温室气体的含量，在（未来）几十年或几个世纪内，气候仍会持续转暖。 No one knows the effects of global warming. 没有人知道全球变暖带来什么样的影响。Does that mean we should do nothing? 这是不是意味着我们就不必采取任何措施呢？Or, are the risks too great? 还是说，这样不采取任何措施危险性会很大呢？,4. Which of the following statements is True

26、? Burning fossil fuels causes the global warming.B. We will have more food with global warming.C. Global warming means disasters to humans.D. More greenhouse gases will gather in the atmosphere.,True or false?( P27 ),scanning,Reading Comprehension III,2,The temperature in the last century didnt seem

27、 to increase much.2. Everyone believes that global warming is caused by the activities of humans.3. Janice Foster believes 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

28、 will do good rather than harm to the earth.6. It is clear what the effects of global warming will be.,1. Although we are burning _ coal every year, we wont _ of it for centuries.2. If the amount of greenhouse gases continues to _, we could be facing a global catastrophe.,quantities of,II. Fill in t

29、he blanks using the phrases below.,compared to /with come about quantities of go up result in even if be opposed to build up run out,run out,go up,3. Many scientists believe that global warming has _ through the burning of fossil fuels.4. The washing machine uses too much energy, but _ we buy a more

30、 economical one, it would still use too much water.,come about,even if,5. The car accident on the main road yesterday _ one drivers death.6. _London, Paris is large.7. Sediment (沉淀物) _ on the ocean floor.,resulted in,Compared to /with,builds up,III. Translation,1. _(是人类活动引起) this global warming rath

31、er than a random but natural phenomenon.2. _ _ (是一位名叫 Charles Keeling的科学家) made accurate measurements of the amount of carbon dioxide in the atmosphere from 1957 to 1997.,It is human activity that has caused,It was a scientist called Charles Keeling who,3. All scientists agree that _ (正是燃烧越来越多) fossil fuels _ (导致了) this increase in carbon dioxide.,it is the burning of more and more,that has resulted in,