人教高中英语必修3Unit4Writing(共23张)课件.ppt--（课件中不含音视频）

1、Topic:How to protect our environmentPeriod 5:WritingUnit 4 AstronomyStep 1:Warming upLong long ago,the world we lived in was very beautiful.We lived a very happy life.But nowThe sky was blue.The air was fresh.The water was clean.Whats happened to the earth now?What has led to this?Have we come to th

2、e end of the world?Global warming may cause natural disasters,such as floods,hurricanes,drought and so on.The earth may become too hot to live on.Step2:Discussion in groupsWhat problems have been caused by humans to the earth?PollutionPollutionair pollutionwaterpollutionWhat pollution do you often s

3、ee in our daily life?BrainstormBrainstormingingrubbishpollutionwhitepollution White pollution refers to plastic pollution,which is a new member of the pollution family.Group work:Finish the worksheet(Each group should focus on one aspect of pollution)Invite one group to report on air pollution the c

4、ause the effect We know that fresh air is very important to mankind.However,human beings often forget this and do all kinds of bad things to harm our living place.Many factories produce harmful gases into the air.As a result,we will breathe in the polluted air,which makes it easier for us to get dis

5、ease.causeeffectlinking wordThis part tells you the importance of air+the fact that human beings forget and harm it.Say the cause and the effect again,this time joining the two together.Invite one group to report on water pollution-the cause-the effect Our drinking water is being polluted,which does

6、 harm to our health.One reason is many factories just pour waste water into the river without treatment.As water is fundamental to the development of life,this irresponsible act has to be stopped.causeeffectlinking wordThis part tells you the importance of water.Say the cause and the effect again,th

7、en link the two ideas together.Invite one group to report on rubbish pollution-the cause-the effect Rubbish can be seen here and there.Each person produces about two kilograms of rubbish in our homes a day.Worse still,many factories create industrial waste.These rubbish has polluted air,water,soil a

8、nd so on,which affects our lifecause 1effect 1linking wordcause 2effect 2Your turn to say the cause and the effectInvite one group to report on white pollution-the cause-the effect White pollution is getting more and more serious,which should be paid attention to.Human beings use unrecyclable and no

9、n-degradable(不可降解的）不可降解的）plastic shopping bags and lunch boxes for convenience.These white trash cannot be degraded,which does harm to the environment.causeeffectAttributive clauseThis part tells you the problem is getting very serious.Your turn to say the cause and the effectOur home is being destr

10、oyed,and the pollution is getting more and more serious.Our homeland is in danger.What should we do?Talk about it.SolutionsStep3:BrainstormingDiscuss about what should be done to save/protect the earth and then share your ideasYou can make use of the following expressions Step 4:Writing task 现在环境变得越

11、来越差。环境问题影响着我们的现在环境变得越来越差。环境问题影响着我们的工作，学习，生活。我们该如何保护我们的环境？工作，学习，生活。我们该如何保护我们的环境？请请以此为题写一篇短文以此为题写一篇短文.(100.(100字左右字左右)写作要点：写作要点：存在的问题存在的问题(Cause)：1.空气、水被污染；空气、水被污染；2.塑料袋、白色快餐盒随处可见塑料袋、白色快餐盒随处可见造成的影响造成的影响(Effect)：1.气候的改变；气候的改变；2.饮用水受到污染；饮用水受到污染；3.人们更容易生病人们更容易生病改进的措施改进的措施(Solution)：倡导低碳生活倡导低碳生活 如节电节水如节电节

12、水,请你再写请你再写12条措施条措施提示词：提示词：气候气候 climate 过低碳的生活过低碳的生活 lead a lower-carbon lifeStructure of your essayPara.1:introduction Our environment is getting worse and worse,which affects our work,study and life.Para.2:causes Para.3:effects Para.4:solutions Para.5:conclusion In a word,we should lead a lower-carbon life.Assessment checklist Homework1.Polish your writing and hand it in.2.Enjoy Michael Jacksons song We Are The World and Earth Song.