【课件】Unit3UsingLanguage读写课课件高中英语人教版选择性必修第四册.pptx

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1、人教版（人教版（2019）选择性必修四）选择性必修四Unit 3 Sea ExplorationUsing LanguageExpress your opinions on sea explorationRead the first paragraph of the two texts and answer the questions.2 What are the three parts in argumentative essays?1 What is the text type of the two passages?Lead inParagraph 1(Text 1)When peopl

2、e talk of exploring the sea more,they usually mean exploiting it.Sea exploration has caused many problems and will continue to cause more.Paragraph 1(Text 2)To truly understand our planet,we must explore the oceans which cover most of it.Opponents may be concerned,but sea exploration is important fo

3、r our future.For example,scientific research ships can help address important issues such as climate change.We need to understand what is happening to our planet so that we can take action.Therefore,more research is necessary.Argumentative essayArgument,evidence,restatement/recommendation/a call to

4、actionActivity 1Text 1When people talk of exploring the sea more,they usually mean exploiting it.Sea exploration has caused many problems and will continue to cause more.More exploration means more pollution.The Deepwater Horizon spilled over 200 million gallons of oil into the sea in 2010.Plastic p

5、ollution is also bad,killing many birds and fish,and has even been found in our tap water.Read the two texts below and find the arguments and evidence in them.Mining for resources is very damaging,especially in the Arctic.Because of climate change,there is less ice now,which means we can look for mo

6、re fossil fuels further north.But if we burn these,the ice will melt more and this negative cycle will continue.Climate change is warning us that something is very wrong.Overfishing is another problem.Whales and dolphins are also hunted for their meat or for so-called research.Although this was bann

7、ed in 1982,some countries are still“murdering”these intelligent creatures without mercy.The sea is home to life,not human beings possessions.It is huge,but it is more sensitive than we think.If we do not protect it,future generations will not forgive us.Arguments1 Exploration causes pollution.2 Mini

8、ng for resources is damaging.3 Overfishing is an issue.lDeepwater Horizon oil spilllPlastic pollution lIt hurts the Arctic.lBurning fossil fuels adds to climate change.lWhales and dolphins are hunted.lBanned,but some countries still doing it.EvidencesText 2To truly understand our planet,we must expl

9、ore the oceans which cover most of it.Opponents may be concerned,but sea exploration is important for our future.For example,scientific research ships can help address important issues such as climate change.We need to understand what is happening to our planet so that we can take action.Therefore,m

10、ore research is necessary.Understanding more about the sea will also help us manage its resources better.Logging new species will improve our understanding of life on the earth.It may help us discover new medicines,as well as new sources of food and energy.Accessing the deep ocean may also help us t

11、o predict events such as earthquakes.The population of the world is growing and we need new resources for future development.There are probably vast amounts of resources under the sea and ice,not just oil and gas but also valuable minerals.Of course,there are still environmental risks.However,these

12、should be balanced with economic needs.Hopefully,as technology improves,we may have more options for managing this balance.Arguments1 Sea exploration is important for our future.2 Understanding more about the sea will also help us manage its resources better.3 We need new resources for future develo

13、pment.lScientific research ships can help address important issues like climate change.lNew medicines,food resources and energy.lPredict events such as earthquakes.lVast amounts of resources may be under the sea and ice.EvidencesLook at the two charts below and decide which one supports which text.A

14、ctivity 21970-19791980-19891990-19992000-2009010203040506070809080453618Decline in oil spills1974 1979 1984 1989 1994 1999 2004 2009 2013Text 2Text 1Global trends in the state of world marine fish stocksIn groups,discuss the following questions and take notes.Activity 31 What is your opinion about s

15、ea exploration?Do you agree with one argument more than the other?2 Has your opinion changed after reading the two texts?Why or why not?3 Are there any other aspects of sea exploration not mentioned that you think are important?In groups,discuss the following questions and take notes.Activity 31 Wha

16、t is your opinion about sea exploration?Do you agree with one argument more than the other?I think sea exploration is a wonderful idea,because even if there are no immediate rewards for it,to explore and find out more about our world is always a good thing.In groups,discuss the following questions a

17、nd take notes.Activity 32 Has your opinion changed after reading the two texts?Why or why not?Yes,my opinion has changed.Before reading Text 1,I did not know that sea exploration could add to sea pollution,via deep sea drilling for example.In groups,discuss the following questions and take notes.Act

18、ivity 33 Are there any other aspects of sea exploration not mentioned that you think are important?We do not know what we dont know;We need to explore the ocean so that we can better understand issues such as acidification which leads to seawater to become more acidic,and how to fight these problems

19、;Studying the ocean causes the creation of new technologies that can help us in other areas.Based on your note,write an argumentative essay on sea exploration,expressing your opinions with supporting facts.Activity 41 The following questions may help you.lWhat is the purpose of sea exploration?lHow

20、does sea exploration help us to protect the sea?lHow does sea exploration cause damage to the sea?lIs there a good balance between protection and exploitation?2 Use the PEEL method to help structure your argument.PointWhat point do you want to make?EvidenceWhat facts and examples can you find to sup

21、port your point?How reliable are the sources?ExplanationExplain how the facts support your opinion and show other opinions to be incorrect.LinkConnect this point to the next point,or back to the main point of the essay or paragraph.3 Write your draft and exchange it with a partner.4 Get your feedbac

22、k and revise your draft.Even though the oceans make up about 70%of the earths surface,more than 80%of the oceans remain unexplored.While some people say that we should not explore the oceans,their reasoning is not very sound.Exploring is not the same as exploiting.When we explore a place,we go just

23、to see and understand what is there.We should explore the ocean,first and foremost,because we do not know what we do not know.We thought we knew many about the ocean,but we were wrong.There could be life forms in the ocean,for example,that fit none of the neat categories we have for life while we ha

24、ve no clue that they even exist.This brings up the second point.We already know many things about the ocean,but we need to learn more.A good example is ocean acidification.We know that it is causing coral Sample WritingFinally,to do this research,we have to enter an extreme environment not very frie

25、ndly to humans.This requires the development of new technologies that can also benefit us in other areas.For example,in many ways,the deep ocean resembles outer space.The technologies can benefit each other.For another instance,the technology of a mechanical arm to collect samples with has been used

26、 in factories and development of artificial limbs for humans.All in all,there are many good reasons to explore the oceans.If we care about science,about protecting our oceans,and about developing new technologies,we need to do all we can to support ocean exploration.to die.We know that using less fo

27、ssil fuel would cause the process to slow down.However,we need to learn more to find out how to stop it.We need more research to see what is going on,and to come up with plans and solutions.exploit vt._gallon n._ murder vt._ n._ mercy n._ possessionn._ opponent n._log vt._ n._marine adj._开发；利用；剥削谋杀；

28、凶杀 usually pl.个人财产；拥有；控制反对者；对手；竞争者谋杀；凶杀；毁坏把载入正式记录；记录仁慈；宽恕；恩惠加仑（容积单位，1英制加仑约等于4.5升）Words and Phrases正式记录：日志；原木海的；海产的；海生的murder1.n.the crime of killing sb deliberately 谋杀；凶杀 He was found guilty of murder.经裁决，他犯有谋杀罪。She has been charged with the attempted murder of her husband.她被指控意图谋杀丈夫。to commit(a)mur

29、der 犯谋杀罪 a murder case/investigation/trial 凶杀案件/调查；谋杀案的审判 The rebels were responsible for the mass murder of 400 civilians.叛乱者对屠杀400名平民负有责任。What was the murder weapon?用的是什么凶器？The play is a murder mystery.这出戏说的是一桩神秘的凶杀案。重点单词重点单词murder2.n.(informal)used to describe sth that is difficult or unpleasant

30、困难的事；讨厌的事 Its murder trying to get to the airport at this time of day.这个时候要赶到机场简直要命。It was murder(=very busy and unpleasant)in the office today.今天办公室里忙乱得要命。IDIOMS1.get away with murder 逍遥法外；（做了错事而）安然无事 His charm and the fact that he is so likeable often allows him to get away with murder.他的魅力和受宠程度常让

31、他无法无天为所欲为。2.murder will out 杀人早晚要败露；天网恢恢，疏而不漏murder3.vt.to kill sb deliberately and illegally 谋杀；凶杀 He denies murdering his wifes lover.他否认谋杀了妻子的情夫。The murdered woman was well known in the area.被杀害的女人在这个地区很有名气。IDIOMSI could murder a.我非常想吃（或喝）I could murder a beer.我很想来杯啤酒。I could murder some chips.我真

32、想敞开肚子吃薯片。mercy1.n.a kind or forgiving attitude towards sb that you have the power to harm or right to punish 仁慈；宽恕 to ask/beg/plead for mercy 请求/乞求/祈求宽恕 They showed no mercy to their hostages.他们对人质丝毫不讲仁慈。God have mercy on us.上帝怜悯我们吧。The troops are on a mercy mission(=a journey to help people)in the

33、war zone.部队出发救助战区民众。2.n.an event or a situation to be grateful for,usually because it stops sth unpleasant 幸运；恩惠 Its a mercy she wasnt seriously hurt.幸运的是她伤势不重。IDIOMS1.at the mercy of 任处置；对无能为力；任由摆布 Im not going to put myself at the mercy of the bank.我不想任由银行摆布。We were at the mercy of the weather.我们受

34、制于天气。2.leave sb/sth to the mercy/mercies of sb/sth 听任某人可能受到虐待（而无能为力）3.throw yourself on sbs mercy 指望某人能善待（或宽恕）你possession1.n.the state of having or owning sth 具有；拥有 The manuscript is just one of the treasures in their possession.这部手稿只是他们的珍藏之一。The gang was caught in possession of stolen goods.这伙人被逮住，

35、人赃俱获。The possession of a passport is essential for foreign travel.出国旅行必须持有护照。On her fathers death,she came into possession of(=received)a vast fortune.她父亲死后，她继承了一大笔财产。possession2.n.C,usually pl.something that you own or have with you at a particular time 个人财产；私人物品 personal possessions 私人物品 The ring

36、is one of her most treasured possessions.这只戒指是她最珍贵的财产之一。3.n.the state of having control of the ball 控球状态 to win/get/lose possession of the ball 赢得/得到/失去对球的控制4.n.the state of having illegal drugs or weapons with you at a particular time 持有违禁物；私藏毒品（或武器）She was charged with possession.她被控持有违禁物品。1 Loggi

37、ng new species will improve our understanding of life on the earth.译文：记录新物种将会增进我们对地球生命的认识。分析：此句中的log用作动词，意为“（正式地）记载、记录（在纸上或计算机里）”。例如：They log everyone and everything that comes in and out of here.他们把在这里出入的人和发生的事都记入日志。此外，log还可用作名词，意为“（某时期事件的）正式记录；（航海或飞行等）日志”。例如：The family made an official complaint t

38、o a ships officer,which was recorded in the log.这家人向一位高级船员提出过正式投诉，此事记入了航海日志。长难句长难句2 Plastic pollution is also bad,killing many birds and fish,and has even been found in our tap water.译文：塑料污染也十分严重，导致许多鸟类和鱼类死亡，甚至在我们的自来水中也发现了塑料污染。分析：该句插入语部分用非谓语动词短语，补充说明塑料污染导致的严重后果。and后面的句子为被动语态的现在完成时，塑料污染直到现在仍然是棘手的问题。“tap water”意为“自来水”。长难句长难句3 Because of climate change,there is less ice now,which means we can look for more fossil fuels further north.译文：由于气候变化，现在冰川减少了，这意味着我们可以在更北的地方寻找更多的化石燃料。分析：该句为which引导的非限制性定语从句，对主句内容进行进一步补充说明。长难句长难句Thank You