Unit 3 Using language（ppt课件）-新人教版（2019）《高中英语》选择性必修第四册.pptx

1、(1)When 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 2010.1 Mining for resources is ve

2、ry damaging,especially in the Arctic.Because of climate change,there is less ice now,which means we can look for more fossil fuels further north.2 Climate change is warning us that something is very wrong.3 Whales and dolphins are also hunted for their meat or for so-called research.Although this wa

3、s banned 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.4 A.Overfishing is another problem.B.If we do not protect it,future generations will not forgive us.C.B

4、ut if we burn these,the ice will melt more and this negative cycle will continue.D.It may help us discover new medicines,as well as new sources of food and energy.E.For example,scientific research ships can help address important issues such as climate change.F.Plastic pollution is also bad,killing

5、many birds and fish,and has even been found in our tap water.(2)To truly understand our planet,we must explore the oceans which cover most of it.1._(oppose)may be concerned,but sea exploration is important for our future.For example,scientific research ships can help address important 2._(issue)such

6、 as climate change.We need to understand 3._ is happening to our planet so that we can take action.4._,more research is necessary.Understanding more about the sea will also help us manage its resources 5._(good).Logging new species 6._(improve)our understanding of life on the earth.It may help us di

7、scover new medicines,as well as new sources of food and energy.7._(access)the deep ocean may also help us to predict events such as earthquakes.The population of the world 8._(grow)and we need new resources for future development.There are probably vast amounts of resources under the sea and ice,not

8、 just oil and gas but also 9._(value)minerals.Of course,there are still environmental risks.However,these should be balanced with economic needs.10._(hope),as technology improves,we may have more options for managing this balance.14:FCAB(1)When people talk of exploring the sea more,they usually mean

9、 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.F.Plastic pollution is also bad,killing many birds and fish,and has even been found in our

10、tap water.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 more fossil fuels further north.C.But if we burn these,the ice will melt more and this negative cycle will continue.Climate change is warning us that s

11、omething is very wrong.A.Overfishing is another problem.Whales and dolphins are also hunted for their meat or for so-called research.Although this was banned in 1982,some countries are still“murdering”these intelligent creatures without mercy.The sea is home to life,not human beings possessions.It i

12、s huge,but it is more sensitive than we think.B.If we do not protect it,future generations will not forgive us.Tips:Tips:空格空格位置（主题句、衔接句、小结句等）位置（主题句、衔接句、小结句等）关键词或近义词复现、代词指代；关键词或近义词复现、代词指代；各种逻辑关系各种逻辑关系 。(2)To truly understand our planet,we must explore the oceans which cover most of it.1._(oppose)may

13、be concerned,but sea exploration is important for our future.For example,scientific research ships can help address important 2._(issue)such as climate change.We need to understand 3._ is happening to our planet so that we can take action.4._,more research is necessary.Understanding more about the s

14、ea will also help us manage its resources 5._(good).Logging new species 6._(improve)our understanding of life on the earth.It may help us discover new medicines,as well as new sources of food and energy.7._(access)the deep ocean may also help us to predict events such as earthquakes.The population o

15、f the world is growing and we need new resources 8._ future development.There are probably vast amounts of resources under the sea and ice,not just oil and gas but also 9._(value)minerals.Of course,there are still environmental risks.However,these should be balanced with economic needs.10._(hope),as

16、 technology improves,we may have more options for managing this balance.OpponentsissueswhatTherefore/Thusbetterwill improveAccessingvaluableHopefullyfor Express your opinions on sea explorationScanning1.Read the two texts quickly and fill in the following form.Item Text 1 Text 2Topic of the passageg

17、enre(体裁体裁)three parts in an argumentative essay the authors attitudes argumentative essayargument(论点论点),evidence(论据论据),restatement(重述重述)/recommendation(提议提议)/a call for actionopposedsupportiveShould the sea be explored?Skimming Item Text 1 ArgumentEvidenceRestatement1.Read the two texts again and fi

18、ll in the following form.ArgumentEvidenceRestatementSea exploration causes problemsPollutionDamaging miningOverfishingLess exploration&more protection What ways can be used to help evidence to prove the points?Examples,facts,explanation(cause&effect)statistics/numbers,quotes,expert opinions,personal

19、 experienceEvidencefdPollutionDamagingminingOverfishingFactExampleCause&effect:Skimming Item Text 1 argument against sea explorationargument against sea exploration ArgumentEvidenceRestatement1.Read the two texts again and fill in the following form.Sea exploration has caused many problems and will

20、continue more.More pollutionDamaging miningOverfishingLess exploration and more protectionFacts:The Deepwater Horizon,plastic pollutionExplanation:(Cause&effect)fossil fuel and climate change Examples:whales and dolphins Item Text 2 ArgumentEvidenceRecommend-ation2.Read the two texts again and fill

21、in the following form.ArgumentEvidencerecommendationWe must explore the oceansIt is important for our future.It helps us manage its resources betterWe need new resources for future development.manage the balance between environmental risks and economic needsEvidenceIt is important for our future.It

22、helps us manage its resources betterWe need new resources for future development.explanationexamplefact Item Text 2 argument for sea explorationargument for sea exploration ArgumentEvidenceRecommend-ation2.Read the two texts again and fill in the following form.It is important for our future.It help

23、s us manage its resources better and predict disasters.We need new resources for future development.Potential environmental risks should be balanced with economic needs.Example:help address issues like climate changeExplanation:logging newspecies.Fact:amounts of.To truly understand our planet,we mus

24、t explore the oceans which cover most of it.假设你是李华，最近你班就假设你是李华，最近你班就“人类是否应该进行海洋人类是否应该进行海洋探索探索”进行了讨论。请根据讨论结果，写一封进行了讨论。请根据讨论结果，写一封8080词左右的词左右的信给某英文报社的编辑来报道此事。信给某英文报社的编辑来报道此事。赞成的理由赞成的理由反对的理由反对的理由你的看法你的看法1.1.获取更多的海底资源；获取更多的海底资源；2.2.提高对地球上生命的提高对地球上生命的理解。理解。1.1.造成海洋污染，导致造成海洋污染，导致海洋生物死亡；海洋生物死亡；2.2.破坏生态系统。破

25、坏生态系统。WritingDear Editor,Recently our class has had a discussion about whether sea exploration should be carried out.Some of the students are in favor of it.They say sea exploration makes it possible for people to gain more resources under the sea.,it might help improve our understanding of the life

26、 on the earth.However,others are against it.They hold the belief that sea exploration might bring about marine pollution,leading the ocean creatures to death.,it might do damage to the ecosystem.Personally,environmental risks should be balanced with economic needs.Hopefully,as technology improves,we

27、 may have more options for managing this balance.Yours,Li Hua1.Complete the argumentative essay and polish the sentences.2.Appreciate another essay on sea exploration on P279 .(优化方案-保护海洋的演讲稿）Homework 近十年来近十年来很多海洋生物灭绝了，引起全世界的广泛关注。假很多海洋生物灭绝了，引起全世界的广泛关注。假设你是李华，请你在环境保护日写一篇关于保护海洋的英文演设你是李华，请你在环境保护日写一篇关于保护

28、海洋的英文演讲稿。要点如下：讲稿。要点如下：1 1海洋受到污染的现状；海洋受到污染的现状；2 2保护海洋的重要性。保护海洋的重要性。As we all know,there are varieties of resources at the depth of the ocean.However,the past decade has witnessed that many marine creatures have died out.Therefore,marine pollution has been greatly concerned by the whole world.On the o

29、ne hand,we must make people aware of the importance of protecting the ocean,because to protect the ocean is to protect human beings.On the other hand,its high time that the government took action.Effective measures should be taken to keep the balance of nature as soon as possible.No matter how difficult it is,never will we abandon protecting the ocean.