河北省南宫市奋飞中学高中英语选修6：UNIT4 GLOBAL WARMING1课件 .ppt

1、Unit4 Global WarmingBy:奋飞中学全球变暖公益广告what happened to the polar bear?ReadingQuestion:How did the global warmingcome about?Step 1:Review the Phrases in the text1.发生:_;pare A with B:_3.rather than:_;4.同意:_5.trap heat:_;come about把.和.比较而不是subscribe to收集热量，困住热量6.be trapped in:_;7.go up:_;8.result in:_9.一方

2、面；另一方面:_ 10.increase by:_陷入上升；增长导致on the one hand,on the other hand增加了11.be opposed to:_;12.事实上:_13.忍受:_;14.继续做某事;_15.due to:_;16.agree with sb._反对in factkeep on doing由于同意某人put up withStep 2:Sentence patterns:1.There is no doubt that the earth is becoming warmer.句式分析：There is no doubt that毫无疑问，that引

3、导_ 从句，说明_的内容。doubt做名词引导同位语从句，引导词：疑否_;肯_.doubt做动词引导宾语从句时，引导词：疑否_;肯_或_.同位语抽象名词doubtthatwhetherthatwhetherif单句填空：1).I have no doubt _ he will success2).I doubt _ they can swim across the river.3).改错：There is some doubt if their football team will win the match.There is no doubt whether they will agree

4、with you on this matter.thatWhether/ifwhetherif2.and that it is human activity that has caused this global warming.句式分析：强调句型:it is/was+被强调成分+that/who+其他成分,试想：该句都强调什么成分？_,_;_拓展：强调句型的一般疑问式：Is/was it+被强调成分+that/who+其他成分特殊疑问式：特殊疑问词（what等）+is/was it that+其他成分主语宾语状语真题对接1).(13.重庆）Was it with the help of th

5、e local guide _ the mountain climber was rescued?2).(14.湖南）It is not doing the things we like,but liking the things we have to do _makes life happy.thatthat真题对接3).(11.福建）It was April 29,2011 _ Prince William and Kate Middleton walked into the palace hall of the wedding ceremony.when真题对接4).-where did

6、 you pick up the stamp?-It was at the post office _ we worked in the summer vacation.where3.Without the“greenhouse effect”,the earth would be about thirty-three degrees Celsius cooler than it is.句式分析：介词短语without/but for表示含蓄虚拟条件，相当于一个if引导的虚拟条件句。表示与现在和将来事实相反的假设，主句的谓语用_;与过去事实相反的假设，主句谓语用_would/.+dowould

7、/.have done真题对接1).(11.陕 西）I _(not go)through that bitter periods without your generous help.2).(11.江西）We _(put)Johns name on the race list yesterday but for his recent injury.couldnt have gonewould have put真题对接3).改错（10.浙江）Had I known about this computer program,a huge amount of time and energy have

8、been saved.would4.Some byproducts of this process are called greenhouse gases,the most important one of which is carbon dioxide.句 式 分 析：which 引 导_ 从句，为关系代词，做of的宾语，指代_.拓 展：1）which还 可 以 指 代_(前/后）面一句话，一般翻译成_的意思。2）介词+which,指物;介词+_,指人。定语greenhouse gases前这；这一点whom真题对接1).(12.山 东）Maria has written two novel

9、s,both of _ have been made into television series.2).(12.陕西）It is the third time that she has won the race,_ has surprised us all.whichwhich真题对接3).（12.福建）The air quality in the city,_ is shown in the report,has improved over the past two months.as真题对接4).改 错(13.重 庆）John invited about 40 people to his

10、 wedding,most of them are family members.5).改 错（13.安 徽）Mo Yan was awarded the Nobel Prize for Literature in 2012,as made one of the Chinese peoples long-held dreams come true.whomwhichStep 3 Imitative writing：1.毫无疑问，台湾属于中国。There is no doubt that Tai wan belongs to China.2.是老师的鼓励给了我继续学习的勇气。It was the

11、 teachers encouragement that gave me the courage to go on with my study.3.没有你的帮助，我不可能取得这么大的进步。Without your help,I couldnt have made such great progress.4.她通过了考试，这使得她的父母很高兴。She passed the exam,which made her parents very happy.Step 4 Composition correcting&improving（use the above structures)Recently

12、Handan has often seen the heavy smog weather.It has done great harm for our daily life.Nobody like the terrible weather.There are two reasons:many accidents happened,and some people got injure and some even lost their lives;more and more people breathed the polluting air and had to go to see the doc

13、tor.tosdpollutedIn the fact,human activity has resulted from the severe consequence.In my opinion,we should call on people to use more public transport;some factories which cause pollution should be closed down.There are not all peoples joint efforts,we will never see the deep blue sky in the future

14、.So lets take action together!inAfter CorrectionRecently Handan has often seen the heavy smog weather,which has done great harm to our daily life.There is no doubt that nobody likes the terrible weather.On the one hand,many accidents happened,and some people got injured and some even lost their live

15、s;on the other hand,more and more people breathed the pollutedair and had to go to see the doctor.which定语从句Doubt同位语句型In fact,It is human activity that has resulted in the severe consequence.In my opinion,we should call on people to use more public transport.Whats more,some factories which cause pollution should be closed down.Without all peoples joint efforts,we would never see the deep blue sky in the future.So lets take action together!It bethat的强调结构Without引导的含蓄虚拟句Step 5 HomeworkWrite a composition by using the above four sentence structures.