Unit 3 Sea explorationUsing language 2ppt课件-（2022新）人教版高中英语高二选择性必修第四册.pptx

1、Using Language 2Express your opinions on sea explorationTo analyzes the arguments and evidence in the texts.To express your opinions on sea exploration.To learn to write an argumentative essay with the help of PEEL method.Should the sea be explored?Read the two texts below and find the arguments and

2、 evidence in them.argument evidenceExploration causes pollution.Deepwater Horizon oil spill Plastic pollutionMining for resources is damaging.It hurts the Arctic.Burning fossil fuels adds to climate change.argument evidenceOverfishing is an issue.Whales and dolphins are hunted.Banned, but some count

3、ries still doing it.argument evidenceSea exploration is important for our future.Scientific research ships can help address important issues like climate change.Understanding more about the sea will also help us manage its resources better.New medicines, food resources and energy.Predict events such

4、 as eartquakes.argument argument evidenceevidenceWe need new resources for future development.Vast amounts of resources may be under the sea and ice.Look at the two charts below and decide which one supports which text.Text 2Text 1In groups, discuss the following questions and take notes.1. What is

5、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.2. Has your opinion changed after reading the

6、 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.3. Are there any other aspects of sea exploration not mentioned that you think are important?We do not know what we dont kn

7、ow; 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; studying the ocean causes the creation of new technologies that can help us in other areas.Based on your note, write an argum

8、entative essay on sea exploration, expressing your opinions with supporting facts.1) The following questions may help you.What is the purpose of sea exploration?How does sea exploration help us to protect the sea?How does sea exploration cause damage to the sea?Is there a good balance between protec

9、tion and exploitation?HomeworkPoint What point do you want to make?Evidence What facts and examples can you find to support your point? How reliable are the sources?Explanation Explain how the facts support your opinion and show other opinions to be incorrect.Link Connect this point to the next poin

10、t, or back to the main point of the essay or paragraph.2) Use the PEEL method to help structure your argument.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

11、 not very sound. Exploring is not the same as exploiting. When we explore a place. We go just 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 li

12、fe forms in the ocean, for example, that fit none of the neat categories we have for life while we have 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 causi

13、ng coral to die. We know that using less fossil 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.Finally, to do this research, we have to enter an extreme envir

14、onment not very friendly 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

15、samples with has been used 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.ex

16、ploit sthto do sth利用某事做某事 exploit sb.with sth.用剥削某人 exploitation n.开发；利用；剥削 explorer n. 开发者；剥削者 1.exploit vt开发；利用；剥削开发；利用；剥削 When people talk of exploring the sea more，they usually mean exploiting it.当人们谈论更多地探索海洋时，他们通常意味着开发它。当人们谈论更多地探索海洋时，他们通常意味着开发它。 【归纳扩展归纳扩展】单句语法填空单句语法填空 You must exploit every opp

17、ortunity _(learn) new things. The controlled _(exploit) of sea resources can protect many species. Children must go to school, not be financially_ (exploit). to learnexploitationexploited Although this was banned in 1982,some countries are still “murdering” these intelligent creatures without mercy.

18、尽管早在1982年就已禁止,但有的国家仍地无情地 “谋杀”这些聪明的动物。 merciful adj. 仁慈的；宽大的仁慈的；宽大的be merciful to/ towards sb 对某人仁慈对某人仁慈2. mercy n. 仁慈；宽恕；恩惠仁慈；宽恕；恩惠【归纳扩展归纳扩展】【语境应用】用适当的介词填空。1) They showed mercy _ their enemies.2) The ship was _ the mercy of the storm.3) She got on her knees and begged _ mercy.onatformercy短语短语at the

19、mercy of 任任处置处置; 对对无能为力无能为力; 任由任由摆布摆布beg for mercy 恳请宽恕恳请宽恕 have mercy on/upon sb. 对某人表示怜悯对某人表示怜悯 show mercy to sb. 对某人表示怜悯对某人表示怜悯 without mercy 无情地无情地 The sea is home to life, not human beings possessions. 海洋是生命的家园，而不是人类的私产。 3.possession n.个人财产；拥有；控制个人财产；拥有；控制be in possession of 拥有拥有（主语为人）（主语为人）be

20、in the possession of (sb)= be in ones possession（某物）被（某物）被 （某人）拥有（某人）拥有come into ones possession 为某人所拥有为某人所拥有take / come into possession of 占有；拥有占有；拥有possess v. 占有，拥有；控制，支配。占有，拥有；控制，支配。【归纳扩展归纳扩展】【语境应用语境应用】根据汉语意思补全下面句子（每空一词）。根据汉语意思补全下面句子（每空一词）。1) 这伙人被逮住了，人赃俱获。这伙人被逮住了，人赃俱获。 The gang was caught _ _ _ s

21、tolen goods.2) 离开宾馆时请记得随身携带好你的私人物品。离开宾馆时请记得随身携带好你的私人物品。 Please remember to take all your _ _ with you when you leave the hotel.3) Jack是个好孩子，他有很多好品质。是个好孩子，他有很多好品质。 Jack is a good boy and _ _ _ _.in possession of personal possessions possesses many good qualities4arrest n逮捕；拘留；中止逮捕；拘留；中止 vt逮捕；拘留；阻止逮捕；

22、拘留；阻止 A 5 million reward has been announced for information leading to the arrest of those responsible for the murder已经宣布了已经宣布了500万万 美元的悬赏金，以获取导致谋杀责任人被捕的信息。美元的悬赏金，以获取导致谋杀责任人被捕的信息。 under arrest 被捕被捕make an arrest 展开拘捕行动展开拘捕行动arrest sb. for doing 因因.逮捕某人逮捕某人arrest ones attention 引起引起.的注意的注意【归纳扩展归纳扩展】单

23、句语法填空单句语法填空 Several days ago, Fox_ (arrest) during a protest against a new fuel pipeline. The murderer was _arrest in a small village. His son was arrested _stealing cars. was arrestedunderforAlthough this was banned in 1982, some countries are still “murdering” these intelligent creatures without m

24、ercy.尽管早在尽管早在1982年就已禁止，但有的国家仍在无情地年就已禁止，但有的国家仍在无情地“谋杀谋杀”这些这些聪明的动物。聪明的动物。【句式分析句式分析】本句是一个复合句。本句是一个复合句。some countries are.是主句；是主句；although=though是从属连词，意为是从属连词，意为“虽然虽然;尽管尽管”，引导，引导让步状语从句。让步状语从句。句子结构句子结构(1)用作连词表示“虽然”，两者大致同义，可换用，只是 although 比 though 更为正式。Though/Although it was raining, we went outside.(2)用作

25、副词although一般不用作副词，而 though 可用作副词，且一般放在句末(不放在句首)，意为“可是；不过”。Its hard work; I enjoy it though.(3)用于习语在 as though(好像，仿佛)、even though(即使，纵然)等固定短语中不能用 although。He is an honest man, I must say, even though I dont like him.(4)用于倒装though引导的让步状语从句可用部分倒装的形式(注意：倒装后位于句首的名词之前不用冠词)，但 although 一般不这样用。Child though h

26、e was, he did quite well.【语境应用语境应用】语法填空。语法填空。1) We will try our best to make it _ though it is hard work. 2) He nodded _ though he knew everything about it.evenasWritingAn argumentative essay on sea exploration写作训练 弄清文路 写作妙笔生花技法点拨 文体分析 把握写作动脉本单元的写作任务是辩论性议论文。一般包括四段：本单元的写作任务是辩论性议论文。一般包括四段：第一段第一段说明辩论的主

27、题；说明辩论的主题；第二段第二段表明正方的观点及其理由；表明正方的观点及其理由；第三段第三段表明反方的观点及其理由；表明反方的观点及其理由；第四段第四段陈述自己的观点。陈述自己的观点。(有时也可以分为三段：第一段说明辩论的主题；第二段表明正方和反方有时也可以分为三段：第一段说明辩论的主题；第二段表明正方和反方的观点及理由；第三段表明作者自己的观点。的观点及理由；第三段表明作者自己的观点。)技 法 点 拨文体分析 把握写作动脉介绍讨论的主题介绍讨论的主题(开头句开头句)：1.We had a discussion about whether it is necessary to.2.Weve h

28、ad a survey on.3.Im writing to tell you about a discussion we have had about.过渡句：过渡句：1.Opinions are divided on this issue.2.Opinions are mainly divided into two groups.3.Different people，however，have different opinions/think quite differently on this matter.介绍正方观点：介绍正方观点：1.45% of the students hold t

29、he view that.For one thing，.For another thing，.2.60% of the students are for the idea.介绍反方观点：介绍反方观点：On the contrary/However/As the old saying goes，each coin has two sides.Nearly half of the students think that.On one hand，.on the other hand，.返 回当前，随着陆地资源短缺、人口膨胀、环境恶化等问题的日益严峻，各当前，随着陆地资源短缺、人口膨胀、环境恶化等问题

30、的日益严峻，各沿海国家纷纷把目光投向海洋，加快了对海洋的探索研究和开发利用。一场沿海国家纷纷把目光投向海洋，加快了对海洋的探索研究和开发利用。一场以开发海洋为标志的以开发海洋为标志的“蓝色革命蓝色革命”正在世界范围内兴起。海洋资源的开发正在世界范围内兴起。海洋资源的开发利用，在很大程度上推动了经济的发展，满足了人类向海洋要效益的愿望，利用，在很大程度上推动了经济的发展，满足了人类向海洋要效益的愿望，但在海洋开发探索迅速升温的同时，海洋资源也正承受着前所未有的压力。但在海洋开发探索迅速升温的同时，海洋资源也正承受着前所未有的压力。写 作 训 练弄清文路 写作妙笔生花假设你是李华，最近你班就假设你

31、是李华，最近你班就“人类是否应该进行海洋探索人类是否应该进行海洋探索”进行了讨进行了讨论。请根据讨论结果，写一封论。请根据讨论结果，写一封80词左右的信给某英文报社的编辑来报道此事。词左右的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.获取更多的海底资源；获取更多的海底资源；2.提高对地球上生命的理解。提高对地球上生命的理解。1.造成海洋污染，导致海洋生物死亡；造成海洋污染，导致海洋生物死亡；2.破坏生态系统。破坏生态系统。注意：开头和结尾已给出，不计入总词数。注意：开头和结尾已给出，不计入总词数。审题审题写作要求是阐述写作要求是阐述“人类是否应该

32、进行海洋探索人类是否应该进行海洋探索”的讨论结果，写作时应的讨论结果，写作时应注意下面几点：注意下面几点：1.确定文体：这是一篇议论文。写作时要注意议论文的写作特点。确定文体：这是一篇议论文。写作时要注意议论文的写作特点。2.主体时态：文章应以一般现在时为主。主体时态：文章应以一般现在时为主。3.主体人称：由于是关于主体人称：由于是关于“人类是否应该进行海洋探索人类是否应该进行海洋探索”的话题，所以人称的话题，所以人称应该以第三人称为主。应该以第三人称为主。谋篇谋篇第一段：说明讨论的话题第一段：说明讨论的话题人类是否应该进行海洋探索；人类是否应该进行海洋探索；第二段：说明正方和反方的观点及理由

33、；第二段：说明正方和反方的观点及理由；第三段：表明自己的观点。第三段：表明自己的观点。核心词汇核心词汇1.执行执行_2.支持支持_3.也，又，还也，又，还 _4.反对反对_5.导致导致_6.造成生态系统破坏造成生态系统破坏_carry outin favour of/be foras well asbe against/object tolead tocause ecosystem destruction连词成句连词成句1.海洋探索使人们有可能发现新的药物。海洋探索使人们有可能发现新的药物。Sea exploration new medicines.2.海洋探索也使人们有可能发现新的食物和能源

34、。海洋探索也使人们有可能发现新的食物和能源。 Sea exploration new sources of food and energy.3.海洋探索可能会导致海洋污染。海洋探索可能会导致海洋污染。Sea exploration might marine pollution.4.海洋污染最终导致海洋生物死亡。海洋污染最终导致海洋生物死亡。Marine pollution finally .has made it possible for people to discoverhas also made it possible for people to discoverbring aboutl

35、eads the ocean creatures to death5.海洋探索可能有助于增进我们对地球上生命的了解。海洋探索可能有助于增进我们对地球上生命的了解。Sea exploration might help .6.科技进步了。科技进步了。 7.我们可能有更多的选择来管理这种平衡。我们可能有更多的选择来管理这种平衡。We may this balance.improve our understanding of the life on the earthTechnology improves.have more options for managing句式升级句式升级1.请把第请把第1、

36、2句话按下面括号内的提示词合成一句话。句话按下面括号内的提示词合成一句话。(1)Sea exploration has made it possible for people to discover .(not only.but also.)(2)Sea exploration has made it possible for people to discover new medicines .(as well as)2.请把第请把第3、4句话按下面括号内的提示合成一句话。句话按下面括号内的提示合成一句话。Sea exploration might bring about marine pol

37、lution， .(which引导非限制性定语从句引导非限制性定语从句)3.请把第请把第6、7句话用主从复合句合成一句话。句话用主从复合句合成一句话。 ，we may have more options for managing this balance. not only new sources of food and energy but also new medicinesas well as new sources of food and energywhich finally leads theocean creatures to deathAs technology improve

38、s用适当的过渡词语，把以上词汇和句式，再加上联想内容，组成一用适当的过渡词语，把以上词汇和句式，再加上联想内容，组成一篇篇80词左右的英语短文。词左右的英语短文。参考范文参考范文Dear Editor，Recently our class has had a discussion about whether sea explorationshould be carried out.Some of the students are in favour of sea exploration.They say sea exploration has made it possible for peop

39、le to discover new medicines as well as new sources of food and energy.Others are against it.Although sea exploration might help improve our understanding of the life on the earth，it might bring about marine pollution，which finally leads the ocean creatures to death.It also might cause ecosystem des

40、truction.Yours，Li Hua返 回Personally，sea exploration should be balanced with economic needs.Hopefully，as technology improves，we may have more options for managing this balance.词汇清单词汇清单核心短语核心短语应用词汇：应用词汇：1. exploit:exploit sthto do sth,exploit sb.with sth,exploitation n. explorer n.2.mercy:be merciful t

41、o/ towards, have mercy on/upon sb,show mercy to sb3. possession:be in possession of ,be in the possession of (sb)= be in ones possession4. arrest: arrest sb. for doing, arrest ones attentionwithout mercy, be home to, take action, as well as, vast amounts of, look into ones eyes, be closely connected

42、 to, all of a sudden,first of all, a variety of, because of认知词汇：认知词汇：directory,meanwhile,gallon,opponent,log,marine,arrest拓展词汇：拓展词汇：exploitexploition, murdermurderer, mercymercifulmercifullypossessionpossessAlthough this was banned in 1982, some countries are still “murdering” these intelligent crea

43、tures without mercy.(本句是一个复合句。本句是一个复合句。some countries are.是主是主句；句；although=though是从属连词，意为是从属连词，意为“虽然虽然;尽管尽管”，引导让步状语从，引导让步状语从句。句。)重点句式重点句式ExerciseI.单句语法填空 1. Our English teacher is a_ (mercy) woman, and she seldom criticises us. 2.Repairing our_ (possess) and changing our spending habits may be the b

44、est way to reduce the amount of rubbish and take care of our environment. 3. Although Ross Sea is abundant in species, it is in danger of _(exploit) by humans.4.We were just talking _the most exciting football match es that we had ever watched recently. 5. The technology is so advanced that it is be

45、ing used across_ wide variety of professions.mercifulpossessions exploitation ofa 6. It is said that vast amounts _money have spent on the project. 7.More sea ice is melting, _means the polar bears are moving into new areas to find food. 8.Pandas are native to China. In other words, China is home_ p

46、andas.9. We looked_ each others eyes,smiled and agreed.10. It is exciting to be connected _the powerful Olympic brand and to get close to star athletes.ofwhichtointotoII.短语填空first of all; because of; as well as; a variety of;without mercy 1. The hunters hunt and kill the elephants for their valuable

47、 tusks_.2. _helping the homeless,the organisation also collects money for those poorwomen.3. To keep fit,_ ,we should have a healthy and balanced diet.4. More and more workers are getting ill _high levels of stress at work.5.The centre provides _activities,and you can choose some you like.without me

48、rcyAs well as first of all because ofa variety of IV.完成句子 1. The typhoon struck our town last August, _crops and buildings. 去年8月份台风袭击了我们的小镇，对农作物和 建筑物造成巨大破坏。 2. Its important to preserve the ancient houses _future generations can understand the journey weve taken. 重要的是要保护古老的房子，以便子孙后代能够 懂得我们所走的旅程。 3.

49、He helps many of his students_stay in school _take part in international science and engineering competitions. 他帮助他的许多学生不仅留在学校，而且还参加 国际科学和工程竞赛。causing great damage toso that but also not just 4.Alice decided to _ and start her own zero-waste grocery delivery service in New York City. 爱丽丝决定采取行动，在纽约市开始了她自己的零废物杂货店送货服务。 5. There are lots of tall trees in this forest, _more than 90 metres. 这片森林里有很多高大的树，有些高达90多米。 take actionsome measuring