高二英语选修6第四单元课件.ppt

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1、Unit 4 Global warmingPeriod 172 Warming up and reading 1课件（人教课标选修6 ）Unit 4 Global WarmingUnit 4 Global WarmingWork in groups -list things as required :1. Things that use energy around us or at any other places,( ie. light)2.Sources of energy (ie. coal)Warming up I ( m ) Things that use energy around

2、 us or at any other places:In a houseThings that use energySources of energylights television cassette player computerfridge stove washing machine hairdryer video recorder coal oilnatural gas wind(power)sun(solar energy) water(hydro-electric power) the sea ( tidal energy) uranium(nuclear energy)plan

3、t waster(biomass energy)Windmills, renewable.What? Renewable?Warming up II ( 5 m )What? What kind? Renewable?A coal power station , non-renewable.What? What kind? Renewable?An oil refinery(精炼厂精炼厂), non-renewable.What? What kind? Renewable?A nuclear power plant, non-renewable.What? What kind? Renewab

4、le?A hydro-electric dam, renewable.Guess it! Uranium Ore (铀矿石铀矿石) The element uranium does not occur in pure form in nature but is found in minerals such as carnotite（钒钾铀矿钒钾铀矿), pictured here.What source of energy?Geysers(间歇泉间歇泉)Geothermal (地热的地热的) Energy Plant Coal Oil Natural gas Uranium Wind (win

5、d power) Sun (solar energy) Water (hydro-electric power) Plant waste (biomass energy) Hot springs or geysers (geothermal energy) The sea (tidal energy)Fossil fuelsNon-renewableRenewableWhat are fossil fuels? Ancient animal and plant material below the surface of the earth with a high carbon content,

6、 such as coal, oil and natural gas, which can be burnt to produce energy. Also known as non-renewable energy because once they are used they have gone forever; they cannot be renewed.What about the weather?9 / 14We needPre-reading ( 3m )The sun How about the plants?If lack of solar energy, the plant

7、sGreenhouseGreenhouse gases! What are greenhouse gases? Whats greenhouse effect?Lets see the following picture about it.The earth is becoming warmerbut does it matter?Reading Read the passage again to find out the answers to the questions in Ex.1Reading I scanning (5m)1.Who wrote the magazine articl

8、e? What is the name of the magazine?2.What are the names of the three scientists mentioned in the article?Sophie Armstrong. Earth Care.Dr Janice Foster, Chrles Keeling, George Hambley.3. What do they think about global warming? Do they agree with one another?There are some very different attitudes a

9、mong scientists towards this issue. Some think the effects will be terrible, while some others believe that we should not worry about it.4. What are the two graphs about?5. What is the main topic of the article?The first graph shows the temperature increase of one degree Fahrenheit between 1860 to 2

10、000. The second graph shows the carbon dioxide content in the atmosphere from 1957 to 1997.Global warming / the warming of the earth. Read the passage carefully and judge whether the statements are true or false?1. The temperature in the last century did not seem to increase much. 2. Everyone believ

11、es that global warming is caused by the activities of humans.3. Janice Foster believes that she can measure the future global rise in temperature.Reading II-skimming (5m)FTT4.The rise in carbon dioxide is causing a steady increase in global warming. 5.George Hambley believes that global warming will

12、 do good rather than harm to the earth.6. It is clear what the effects of global warming will be.TTF1. Who found out the amount of carbon dioxide in the atmosphere from 1957 to 1977?A. Dr. Janice Foster. B. Charles Keeling.C. George Hambley. D. Sophie Armstrong.BReading IV (3m)2. The author probably

13、 agrees that _A. actually global warming is good for man.B. we should do nothing about the global warming.C. catastrophes will happen if the globe keeps on warming.D. a lot remains to be found out about the effects of global warming.DThe different ideas between Dr. Janice Foster & George Hambley Dr.

14、 Janice FosterGeorge HambleyCarbon dioxide has caused the global temperature to _. An increase of five degrees would be a _ and could be _.More carbon dioxide is a _ thing,which makes crops _ and will encourage _.go upcatastrophevery seriouspositiveproduce morea greater range of animalsReading V (4m

15、)SummarySkim over the passage, and tell what you have learnt in class. Try to talk in general terms rather than in details.eg: I learnt that the earth is becoming warmer. I learnt that global warming could have terrible effects on the environment. .DebateABA : We shall do something about global warm

16、ing.B: We shall do nothing about global warming.Assignment1.Read the passage again and review the new words and expressions.2.Prepare the debate in groups.3.Surf the internet for more information about global warming.1.it is a rapid increase when compared tocompared to other natural changes. compare

17、 A to Bcompare A to B compare A with Bcompare A with B：把A比作B，一般要有相似之处，显示某人或某物与他人或他物相同。：把A和B进行比较egeg: : 我们常把儿童比作花朵。我们常把儿童比作花朵。egeg: : 如果你把这本字典和那本比较一下，你就会发如果你把这本字典和那本比较一下，你就会发现许多不同之处。现许多不同之处。We often compare children to flowers.If you compare this dictionary with that one, youll find many differences.

18、Language points for Reading I2.So how has this come aboutcome about and does it matter?come aboutcome about : 发生，造成发生，造成 相当于相当于happenegeg: :你能告诉我事情是怎么发生的吗？你能告诉我事情是怎么发生的吗？egeg: :随着电的使用，种种大变化发生了。随着电的使用，种种大变化发生了。Can you tell me how the accident came about？With the use of electricity, great changes have

19、 come e out come up出现；（消息）传开；（观点）公开出现；（消息）传开；（观点）公开发生、举行；（在空中）出现发生、举行；（在空中）出现3. random3. random adj & n. Adj. 随意的，任意的随意的，任意的egeg: : The information is processed in a random order. 这些信息是随机处理的。这些信息是随机处理的。n. n. at random at random 随意地随意地egeg: :我随意点了个人。我随意点了个人。 I called one at radom. 4. phenomenon4. phe

20、nomenon n. 现象；现象； 奇迹，罕见的人才或事物奇迹，罕见的人才或事物egeg: : 雨雪是天气现象。雨雪是天气现象。Rain and snow are phenomena of the weather.egeg: :不应该简单地视未婚妈妈为一种社会现象。不应该简单地视未婚妈妈为一种社会现象。 Unmarried mothers should not be regarded simply_.egeg: :贝多芬是音乐家中的天才。贝多芬是音乐家中的天才。 Beethoven was_ among musicians.复数形式复数形式 pl. phenomena as a social

21、phenomenon.a phenomenon5. subscribe v. 5. subscribe v. 不及物动词，后接不及物动词，后接toto11订阅，订购（报纸等）订阅，订购（报纸等）egeg: : 我今年订了中国日报。我今年订了中国日报。I subscribed to China Daily this year.2 捐赠。捐赠。3 subscribe to sth 赞成赞成 同意同意sthHe subscribe to what I said.他同意我说的。他同意我说的。6. tend6. tend 1 v. 后跟后跟to 常常会，常常会，egeg: : 女人往往比男人长寿。女人往

22、往比男人长寿。Women tend to live longer than men.2 v. 后跟介词后跟介词 egeg: :近年来物价趋于上升。近年来物价趋于上升。The prices have tend towards over recent years.3 vt3 vt. .照顾，伺候照顾，伺候n. tendency 倾向倾向 偏好偏好 adj. tender 温柔的温柔的辨析：辨析：trend n. 趋向趋向 7. result in 7. result in 产生，导致产生，导致 (= cause / lead to )主语：主语： in 的宾语：的宾语：egeg: : 努力终归成功

23、。努力终归成功。Hard work results in success.result fromresult from 主语：主语： |from 的宾语：的宾语： 起因起因结果结果由由引起，产生引起，产生结果结果起因起因His sickness was caused by eating too much.= His sickness resulted _eating too much. (in / from)from5. state v.5. state v.陈述，声明；陈述，声明； n. n. 状况，情况；国家；状况，情况；国家； +n. state +that从句从句 +wh-从句；从句；

24、可用于被动结构，也可用过去分词作定语。可用于被动结构，也可用过去分词作定语。n. statement 声明，陈述声明，陈述 +n. state +that从句从句 +wh-从句；从句；1.1.他已公开声明他会支持那项政策。他已公开声明他会支持那项政策。He has publicly _ _ _ for the policy.stated his support2.2.我听见那位官员说不接纳儿童。我听见那位官员说不接纳儿童。I heard the official state that they would not accept children.3.3.合同清楚地叙述了那项工作应在何时完成。合

25、同清楚地叙述了那项工作应在何时完成。The contract stated when the work should be finished.egeg: : 她今天心情不好。她今天心情不好。egeg: : 国家首脑国家首脑n.状况，情况；国家状况，情况；国家She is in a terrible state today.the head of state6. range6. range v.排列排列, 使成行；偏袒，站在使成行；偏袒，站在的方面。的方面。 n. 范围范围(尤指从尤指从到到各种种类各种种类,可供选择的可供选择的范围等，可加不定冠词范围等，可加不定冠词) ；排列；排列 beyon

26、d the range of out of ones range超越超越的范围的范围某人达不到的某人达不到的egeg: : 这家商店商品品种多。这家商店商品品种多。The shop keeps_. egeg: : 年龄范围自年龄范围自6 6岁到岁到12 12 岁。岁。_is from six to twelve years old.a wide range of goodsThe age rangev.排列排列, 使成行；偏袒，站在使成行；偏袒，站在的方面。的方面。主要搭配为：主要搭配为：+名词名词/代词；代词；+介词介词+名词名词/代词代词；常可用于常可用于: 1. 被动结构被动结构 2.

27、range oneself； 3. range from to / between and 从从到到不等。不等。egeg: : 老师令其学生沿着小径排队。老师令其学生沿着小径排队。The teacher _along the path.egeg: : 温度在温度在1515度到度到3535度之间。度之间。The temperature_.egeg: : 我们应当列身于法律与秩序的一边。我们应当列身于法律与秩序的一边。We should _ _ on the side of law and order.arrange ourselvesranged his studentsranges from

28、15 to 35 degrees7. matter v. :要紧；有关系。 eg: 我认为除了他自己以外，没有人对她来说是重要的。 I dont think anybody matters to her apart from herself.相当于相当于important。8. build up8. build up 逐步建立，增加，增进逐步建立，增加，增进build up ones fortunebuild up ones strengthegeg: : 累积财富累积财富 养精蓄锐养精蓄锐9. keep on9. keep on egeg: : 他们虽然很累了，还是继续工作。他们虽然很累了，还是继续工作。继续继续+doing sth.坚持坚持They keep on working although they are tired.keep upkeep up