高二英语：Unit22 lesson1 global warming课件北师大版 课件.ppt

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,*,*,Unit 22,Environmental Protection,Lesson 1,Global Warming,warm-up,Exercise 1,How much do you know about,environental,problems?use,the key words to complete the,sentences:,1.Earthquakes and volcanic eruptions are examples of,.,2.The giant panda and the Bengal tiger are,.,3.Because of,the earth is warmed by gases trapped in the atmosphere.,is an increase over time of the average temperature of the Earth.,is harmful to the ecology of the sea.,6.Thousands of people in Africa continue to die because of war and,.,7.The water level rose so high in several places that many homes are at risk from,.,1.Earthquakes and volcanic eruptions are examples of,natural disasters,.,2.The giant panda and the Bengal tiger are,endangered species,.,3.Because of,the greenhouse effect,the earth is warmed by gases trapped in the atmosphere.,4.,Global warming,is an increase over time of the average temperature of the Earth.,5.,Overfishing,is harmful to the ecology of the sea.,6.Thousands of people in Africa continue to die because of war and,poverty,.,7.The water level rose so high in several places that many homes are at risk from,flooding,.,Answers,Exercise 2,Listen to the news report.Which of the statements are true or false?Write T for true,and F for false.,1.The news reporter is working in Antarctica.,2.The news report is about penguins.,3.Penguins have only one partner for life.,4.Fishing boats do not affect the deaths of,penguions,.,5.Most penguin species outside of Antarctica are safe,from environmental changes.,6.Experts call for immediate international conservation,efforts,F,T,T,F,F,T,Exercise 3,In,pairs,discuss,which animals you think,are among the top 5 endangered species,in China?,物种代码,010670001,中文名,白暨豚,拉丁学名,Lipotes,vexillifer,俗名,白暨豚,商品名英文名,Yangtze River Dolphin,CITES,公约附录,附录,I,IUCN,等级,濒危,红皮书等级,濒危,国家保护等级,一级,濒危原因,回游被切断，过度捕猎，环境污染,保护措施,迁地保护,物种代码,011050011,中文名,藏羚,拉丁学名,Pantholops,hodgsoni,俗名,羚羊，藏羚羊,商品名英文名,Chiru,Tibetan antelope,红皮书等级,渐危,国家保护等级,一级,濒危原因,栖息地破坏，作为食物被捕猎，因为贸易被捕猎,白唇鹿的角很大,别名 岩鹿、白鼻鹿、黄鹿,学名,Cervus,albirostris,英文名,white-lipped deer,鹿科,Cervidae,分布 青海、甘肃及四川西部、西藏东部,国家一级保护动物,白唇鹿的体型大小与水鹿、马鹿相似。头骨泪窝大而深。唇的周围和下颌为白色，,故名,“,白唇鹿,”,，为我国特产动物。成年雄鹿角的直线长可达,1,米，有,4-6,个分叉，,雌性无角。蹄较宽大。通体呈黄褐色，臀斑淡棕色，没有黑色背线和白斑。,栖息在海拔,3500-5000,米的高寒灌丛或草原上。白天常隐于林缘或其他灌木丛中，,也构件登流石滩和裸岩峭壁，善于爬山奔跑。喜欢集群生活。主要采食禾本科、,蓼科、景天科植物，也吃多种树叶，有食盐的习性。发情交配多在,9-11,月份，,雄性间有激烈的争偶格斗，孕期,8,个月左右，每胎,1,仔，幼鹿身上有白斑。鹿茸产,量较高，是名贵中药材。,物种代码,011050018,中文名,赛加羚羊,拉丁学名,Saiga,tatarica,俗名,高鼻羚羊，大鼻羚羊,商品名英文名,Saiga,Antelope,CITES,公约附录,附录,II,IUCN,等级,濒危,红皮书等级,国内绝迹,国家保护等级,一级,濒危原因,栖息地破坏，过度捕猎，作为食物被捕猎，作为医药成分被捕猎，,因为贸易被捕猎,物种代码,011050007,中文名,喜马拉雅塔尔羊,拉丁学名,Hemitragus,jemlahicus,俗名,喜马拉雅塔尔羊，毛羊，山羊,商品名英文名,Himalayan,Tahr,CITES,公约附录,未列入,IUCN,等级,资料不足,红皮书等级,稀有,国家保护等级,一级,濒危原因,过度捕猎,物种代码,011050003,中文名,北山羊,拉丁学名,Capra ibex,俗名,亚洲 羊，红羊，悬羊,商品名英文名,Ibex,CITES,公约附录,未列入,IUCN,等级,未列入,红皮书等级,濒危,国家保护等级,一级,濒危原因,作为食物被捕猎，,栖息地破坏,物种代码,010530009,中文名,云豹,拉丁学名,Neofelis,nebulosa,俗名,乌云豹，龟纹豹，荷叶豹，艾叶豹，樟豹,商品名英文名,Clouded Leopard,CITES,公约附录,附录,I,IUCN,等级,易危,红皮书等级,濒危,国家保护等级,一级,濒危原因,因为贸易被捕猎，作为医药成分,被捕猎，作为食物被捕猎，栖息地破坏,物种代码,011030010,中文名,麋鹿,拉丁学名,Elaphurus,davidianus,俗名,四不象,商品名英文名,Pere,Davids Deer,CITES,公约附录,未列入,IUCN,等级,濒危,红皮书等级,野生绝灭,国家保护等级,一级,濒危原因,栖息地破坏，过度捕猎,物种代码,011050008,中文名,红斑羚,拉丁学名,Naemorhedus,cranbrooki,俗名,红斑羚，红山羊，赤斑羚,商品名英文名,S.China,Goral,CITES,公约附录,未列入,IUCN,等级,未列入,红皮书等级,稀有,国家保护等级,一级,濒危原因,栖息地破坏，作为食物被捕猎，过度捕猎,物种代码,011030017,中文名,黑麂,拉丁学名,Muntiacus,crinifrons,俗名,红头麂，蓬头麂,商品名,麝香,英文名,Black fronted,Muntjac,CITES,公约附录,附录,I,IUCN,等级,易危,红皮书等级,渐危,国家保护等级,一级,濒危原因,种内生物学特点，栖息地破坏，,作为食物被捕猎，因为贸易被捕猎,Exercise 4,What can you do to help save them?,Write down your suggestionsthen present your ideas to the class.,reading,Exercise 1,In groups discuss what you know,about global warming.,Look at the pictures to get ideas.,Exercise 2,Which countries do you think contribute more,to global warming:,developed countries like America,or undeveloped countries like many in Africa.Why?,Exercise 3,Scan the text below for these words and work out their meanings:,environmentalist:,line 1,people who are concerned with protecting the environment,radiate:,line 22,send out in all directions,atmospheric concentration:,line 35,the amount of such gases in the atmosphere,release:,line 33,allow to come out,insignificant:,line 43,too small or unimportant to consider or worry about,consequence:,line 44,something that happens as a result of a direct action or set of conditions,dramatic:,line 48,great and sudden,energy-efficient:,line 65,that helps to save energy,Exercise 4,Read the text and answer these questions,1.What is global warming?,2.What human activities are causing global warming?,3.By how much has the global average temperature increased in the last 100 years?,4.Are greenhouse gases necessary for life on Earth?,5.How can individuals help solve the problem of global warming?,Global warming is an average increase in the,Earth;s,atmosphere.,In,dustry,agriculture,transportation,deforestation and the burning of fuels are,causing global warming.,By 1F,Yes,they,are.because,they trap heat in the atmosphere of the Earth.Otherwise the Earth,would be cold and,uns,unsuitable for life.,As individuals we can make small changes like taking public transport,recycling,using low flow shower heads,buying energy-efficient light bulbs to help stop global warming,vocabulary,Exercise 6,beyond our control,pump into,as a result of,in large quantities,refer to,speed up,1.Water was,pumped into,the fish pond from the river.,2.We all need to,speed up,to finish in time.,3.There is nothing more we can do.The situation is now,beyond our control,.,As a result of,the accident,she is now,afraind,of water.,5.The scientist,referrd,to,global warming at least three times in his speech.,6.The factory was producing greenhouse gases,in large quantities,.,Use the,expressons,in the box in the correct form to complete the sentences.,grammar,Exercise 7,What verbs are used in the text to report these statements?,1.Human beings are causing changes in the Earth,s climate.,2.Gases pumped into the Earth,s atmosphere have been speeding up the process of,global warming.,3.Global warming could be one of the biggest environmental problems facing the 21st century.,4.Global warming is mostly due to human activities.,5.Global warming will cause dramatic climate changes including more frequent floods,heat waves,and droughts.,to report that,to claim that,to believe that,to insist that,to warn that,Exercise 8,Look at these sentences from the text and explain why the underlined verbs,are not the same tense as the reporting verbs.,1.Recent reports from the IPCC warned that global warming,will cause,dramatic,climate changes.,2.Scientists found that the temperature of the Earth,is controlled,by greenhouse gases.,because it,it,in the future,because it is a general truth,Exercise 9,Match the sentences with appropriate reporting verbs from the list.,Then write the reported sentences.,admit,boast,forbid,inquire,invite,order,suggest,threaten,1.we,ll close credit lines if you don,t reduce carbon dioxide emissions.,2.Ok,you,re right,some poisonous chemicals did escape into the atmosphere.,3.Why don,t you drop in tonight?,4.Stand up immediately!,5.i,m the best student in this school!,6.You can,t use your dictionaries during the test.,7.Shall we have a cup of tea?,8.Is the bus service running according to the timetable today?,Answers:,1.They threatened to close the credit lines if we don,t reduce carbon dioxide emissions.,2.They admitted that some poisonous chemicals had escaped into the atmosphere,3.he/she/they invited me to drop in tonight.,4.he/she/they ordered me to stand up immediately.,5.he/she boasted that he/she is the best student in that school.,6.he/she/they forbade us to use our dictionaries during the test.,7.she/he/they suggested having/that we should have a cup of tea.,8.i/he/she/they/we inquired if the bus service was running according to the,timetable today.,Homework,exercise 1 on page 52,Thats all.Thank you,Goodbye,