高三英语一轮按话题复习之自然灾害与环境保护精品公开课课件.ppt

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1、高三一轮按话题复习之自然灾害与环境保护Natural Disasters&Environmental ProtectionStep 1:Vocabulary brainstormNatural disastersCause?droughtfaminefloodearthquaketsunamivolcano eruptionhurricanethunderstormtyphoonNatural disastersHuman activitiesStep 1:Vocabulary brainstormCut down treesBurn fossil fuelKeep bad behaviors

2、OverdevelopBuild factoriesGive off poisonous gasRelease polluted waterHunt animals without mercyNeglect population expansionfloodearthquakedroughtfaminetsunamihurricanetyphoonthunderstormvolcano eruptionNatural disastersHuman activitiesHarmful resultsStep 1:Vocabulary brainstormFall downLie In ruins

3、Fall into ruinscut off the powerCause great damage Cause economic lossesGet injuredBe missingLose ones lifeSuffer extreme weatherLead an uncomfortable lifeLose habitatBe endangered/in dangerDie outDestroy the balance of natureAppreciate the importance of environmental protectionTake the responsibili

4、ty to protect the environmentArouse awareness of sustainable developmentPrevent pollutions Save resourcesBuy environment-friendly productsAdvocate using renewable energyHold annual meetings to remind people of Carry out Wildlife protection programsconserve natural habitats Protect endangered species

5、 from being huntedSet up more natural reservesNatural disastersHuman activitiesHarmful resultsEffective measuresStep 1:Vocabulary brainstormNatural disastersHuman activitiesHarmful resultsEffective measuresStep 1:Vocabulary brainstormTask 1:Using vocabulary The global _(平均气温平均气温)has increased by 0.8

6、 from 17 in 1951 to 17.8 in 2001.Thus,we can come to a conclusion that our earth is getting warmer and warmer.As far as we know,the major reason for global warming is due to_(人类活动人类活动).Firstly,the use of _(化石燃料化石燃料)by industry releases greenhouse gases.Moreover,_(砍伐砍伐)forests means that less carbon

7、dioxide can be changed back into oxygen.As a consequence of_(全球变暖全球变暖),the sea level is rising.And people are suffering more_(极端气候极端气候).The increase in temperature is also causing much _(破坏破坏)to the balance of nature.Its high time that we should _(采取措施采取措施)to protect our earth.Not only can we contro

8、l the _(释放、释放、排放排放)of carbon dioxide,but also we can be encouraged to use new energy,such as_(太阳能太阳能).In a word,only in this way can we make our earth a better place for our human beings.average temperaturehuman activitiesfossil fuelscutting downglobal warmingextreme weatherdamagetake measuresreleas

9、ingsolar energy2.课本佳句：课本佳句：But one million people of the city,who thought little of these events,were asleep as usual that night.句型要点句型要点：非限制性定语从句：非限制性定语从句仿句仿句：每个人都在每个人都在破坏破坏地球地球，然而他们可能自己都然而他们可能自己都没有意识到这一点没有意识到这一点。_1.课本佳句：课本佳句：The pigs were too nervous to eat.句型要点句型要点：too to 结构结构 仿写仿写：被污染的水太脏了不能喝。：被

10、污染的水太脏了不能喝。_Task 2:making sentencesStep 2:Sentence imitationThe polluted water is too dirty to drink.Everybody is causing damage to the earth,which,however,they may not realize.3.课本佳句：课本佳句：All hope was not lost.句型要点句型要点：all not 部分否定句部分否定句 仿句仿句：并不是所有措施都有效。：并不是所有措施都有效。_Task 2:making sentencesStep 2:Se

11、ntence imitationAll the measures are not effective.4.课本佳句：课本佳句：I was about to go back to sleep when suddenly my bedroom became as bright as day.句型要点句型要点：be about to when 仿句仿句：救援人员正要离开，就在这时另一场地震发：救援人员正要离开，就在这时另一场地震发生了。生了。_The rescue workers were about to leave when another earthquake happened.5.课本佳句：

12、课本佳句：There is no doubt that the earth is becoming warmer and that it is human activity that has caused global warming.句型要点句型要点：There is no doubt that 句型句型 It is that 强调句强调句 仿句仿句：毫无疑问保持生态平衡是很重要。：毫无疑问保持生态平衡是很重要。(There is no doubt that )_ 正是随着世界人口的增长，我们的环境变得正是随着世界人口的增长，我们的环境变得越来越糟糕。越来越糟糕。(it is that ,w

13、ith the increase of)_Task 2:making sentencesStep 2:Sentence imitationThere is no doubt that it is important to keep the balance of nature.It is with the increase of the world population that our environment is getting worse and worse.1.时态准确时态准确2.要点齐全要点齐全3.分段合理分段合理4.语句地道语句地道5.过渡自然过渡自然Step 3:Passage a

14、ppreciation The global average temperature has increased by 0.8 from 17 in 1951 to 17.8 in 2001.Thus,we can come to a conclusion that our earth is getting warmer and warmer.As far as we know,the major reason for global warming is due to human activities.Firstly,the use of fossil fuels by industry re

15、leases greenhouse gases.Moreover,cutting down forests means that less carbon dioxide can be changed back into oxygen.As a consequence of global warming,the sea level is rising.And people are suffering more extreme weather.The increase in temperature is also causing much damage to the balance of natu

16、re.Its high time that we should take measures to protect our earth.Not only can we control the releasing of carbon dioxide,but also we can be encouraged to use new energy,such as solar energy.In a word,only in this way can we make our earth a better place for our human beings.Phenomena摆现象摆现象Reasons

17、列原因列原因Measures 说措施说措施Linking words连接词、过渡词连接词、过渡词useful linking words并列、并列、递进递进因果因果转折转折罗列罗列总结总结besides,in addition,whats more,furthermorebut,however,on the contrary,otherwisebecause,due to,because of,thanks to,owing to,therefore,as a result,consequentlyin a word,all in all,in general,in conclusionon

18、the one hand/on the other hand,for one thing/for another;at first/then/finally/eventually Step 3:Passage appreciation The global average temperature has increased by 0.8 from 17 in 1951 to 17.8 in 2001.Thus,we can come to a conclusion that our earth is getting warmer and warmer.As far as we know,the

19、 major reason for global warming is due to human activities.Firstly,the use of fossil fuels by industry releases greenhouse gases.Moreover,cutting down forests means that less carbon dioxide can be changed back into oxygen.As a consequence of global warming,the sea level is rising.And people are suf

20、fering more extreme weather.The increase in temperature is also causing much damage to the balance of nature.Its high time that we should take measures to protect our earth.Not only can we control the releasing of carbon dioxide,but also we can be encouraged to use new energy,such as solar energy.In

21、 a word,only in this way can we make our earth a better place for our human beings.Task 3:writing passages 书面表达书面表达 调查显示调查显示,中国长江江豚中国长江江豚(finless porpoise)受人类活动受人类活动影响而濒临灭绝，目前总数不足影响而濒临灭绝，目前总数不足1000只。假设你是李华只。假设你是李华,现请用英文给现请用英文给WWF(世界自然保护基金组织世界自然保护基金组织)写一封信，写一封信，请他们关注这一状况并提供帮助。内容应包括请他们关注这一状况并提供帮助。内容应包

22、括:说明写信目的说明写信目的 简述江豚现状简述江豚现状 希望希望WWF如何帮助如何帮助(比如比如:资助江豚保护项目等资助江豚保护项目等)表示感谢并期待回复表示感谢并期待回复注意注意:(1)词数不少于词数不少于80;(2)书信格式及开头均已给出书信格式及开头均已给出(不计入总词数不计入总词数)。Dear Sir or Madam,Im a student from Chongqing,China._Yours sincerely,Li HuaStandard:1.时态准确时态准确2.要点齐全要点齐全 3.分段合理分段合理 4.语句地道语句地道 5.过渡自然过渡自然Im writing to On

23、ly about 1,000 are estimated to be still living at present.We sincerely hope that a sponsorship will be of great help.Thank you for your attention and Im looking forward to your reply.Step 4:Homework 1.Write down this passage 书面表达书面表达2.Do the topic-related reading comprehension （话题：水问题，节约用水）（话题：水问题，节约用水）THANKYOU