Unit 3 Sea Exploration Using Language (II) （ppt课件）--2024新人教版（2019）《高中英语》选择性必修第四册.pptx

1、Unit 3 Period 4 Using Language()Express your opinions on sea exploration学习目标学习目标1.通过阅读两篇议论短文，了解海洋探索对于人类的利弊，能够树立正确的海洋观；2.能掌握议论文的问题结构和语言特征，完成议论文写作。新 课 导 入课 堂 学 习Read the two texts and answer the questions.What is the text type of the two passages?What are the three parts in argumentative essay?Argumen

2、tative essay.Argument,evidence,restatement/recommendation/a call to action.1Read the two texts below and find the arguments and evidence in them.argument evidenceExploration causes pollution.Deepwater Horizon oil spill Plastic pollutionMining for resources is damaging.It hurts the Arctic.Burning fos

3、sil fuels adds to climate change.Overfishing is an issue.Whales and dolphins are hunted.Banned,but some countries 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 s

4、ea will also help us manage its resources better.New medicines,food resources and energy.Predict events such as earthquakes.We 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.2Text

5、2Text 1In groups,discuss the following questions and take notes.31.What is your opinion about sea 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?I think sea exploration is a wonderful idea,because even if there are

6、 no immediate rewards for it,to explore and find out more about our world is always a good thing.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 ment

7、ioned 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;Studying the ocean causes the creation of new technologies that

8、 can help us in other areas.Based on your note,write an argumentative essay on sea exploration,expressing your opinions with supporting facts.41)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 ca

9、use damage to the sea?Is there a good balance between protection and exploitation?2)Use the PEEL method to help structure your argument.PointEvidenceExplanationLinkWhat point do you want to make?What facts and examples can you find to support your point?How reliable are the sources?Explain how the f

10、acts support your opinion and show other opinions to be incorrect.Connect 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.Use the checklist to help each other revise the drafts.4)Get your feedback and revise your draf

11、t.YesNoIs the point clear enough?Are there any examples or facts that support the argument strongly?Is there any explanation on how the evidence supports the opinion?Are there some connectives linking one point to another?Even though the oceans make up about 70%of the earths surface,more than 80%of

12、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 to see and understand what is there.We thought we knew many about the ocean,but we were wrong.There co

13、uld be life 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 c

14、ausing 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 environm

15、ent 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 samples w

16、ith 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.1.When people ta

17、lk 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。exploit vt.开发；利用；剥削exploit sth.to 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The controlled _(exploit)of sea resources can protect many species.exploitation2.Although this was

18、banned in 1982,some countries are still“murdering”these intelligent creatures without mercy.尽管这在1982年被禁止,一些国家仍然毫不留情地“谋杀”这些聪明的动物。mercy n.仁慈;宽恕;恩惠show mercy to sb/have mercy on sb 怜悯某人at the mercy of.任由摆布；忍受控制Its a mercy that.真是万幸。without mercy 毫不留情merciful adj.仁慈的；宽大的be merciful to/towards sb 对某人仁慈3.

19、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。possession n.个人财产；拥有；控制be in possession of 拥有（主语为人）be in the possession of(sb)=be in ones possession（某物）被（某人）拥有come into ones possession 为某人所拥有take/come into possession of 占有；拥有possess v.占有，拥有；控制，支配。1)这伙人被逮住了，人赃俱获。The gang was ca

20、ught _ stolen goods.2)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.in possession of personal possessions 4.Logging new species will improve our understanding of life on the earth.记录新物种将提高我们对地球上生命的了解。log vt.把载入正式记录;记录n.正式记录;日志;原木log in/on 注册，登记log in/on to

21、登录log off/out 注销；结束5.Although this was banned in 1982,some countries are still“murdering”these intelligent creatures without mercy.尽管这在1982年被禁止,一些国家仍然毫不留情地“谋杀”这些聪明的动物。本句是一个复合句。some countries are.是主句;although=though是从属连词,意为“虽然;尽管”,引导让步状语从句。Although the sun was shining,it wasnt very warm.尽管太阳高照,天却不是很暖

22、和。though/although的用法的用法(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 there.虽然下着雨,但我们还是去了那儿。(2)用作副词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.工作很辛苦,可是我乐意干。(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 alt

23、hough。We felt as though we had witnessed the whole thing.我们感觉仿佛目击了整个事件似的。(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。I will say no more on these matters,important though they are.虽然这些事很重要,我也不想再说什么了。完成句子（1）纵然任务艰巨，我们也要及时完成。We will manage to accomplish the task in time _ _ it is difficult.(2)拉斯蒂点点头，好像一切都明白了。Rusty nodded _ _ she understood everything.even thoughasthough课堂总结课堂总结Could you summarize the structure about the argumentative essay?