Unit 3 Using language （ppt课件）-2022新人教版（2019）《高中英语》选择性必修第四册.pptx

1、Express your opinions on sea explorationShould the sea be explored?benefits:1.Get new sources of food.2.We can get fossil fuels such as oil,gas and coal.negative effects:1.Spilling oil into the sea causes pollution.2.Cause plastic pollution.What are the two authors opinions about the sea exploration

2、?Lets learn more details in the passage.disagree agreeSkim the two texts and answer the questions below.1.What is the text type of the two texts?A.Narration(记叙文记叙文).B.Exposition(说明文说明文).C.Practical writing(应用文应用文).D.Argumentation(议论文议论文).2.What are the three parts in argumentative essay?argument论点论点

3、;evidence论据论据;restatement重申重申/recommendation推荐推荐/a call to action号召号召Read the two texts silently and find the arguments 划横线划横线and evidence 划波浪线划波浪线Para.1 -main argument主论点主论点Sea exploration has caused many problems and will continue to cause more.Part.1:Argument Part.3:Restatement Part.2:Evidence ch

4、eck the arguments分论点分论点 and evidence论据论据 in it.1argument evidence21.Exploration causes pollution.Deepwater Horizon oil spill Plastic pollution2.Mining for resources is damaging.It hurts the Arctic.Burning fossil fuels adds to climate change.3.Overfishing is a problem.Whales and dolphins are hunted.B

5、anned,but some countries still doing it.3check the arguments分论点分论点 and evidence论据论据 in it.1argument evidence21.Exploration causes pollution.Deepwater Horizon oil spill Plastic pollution2.Mining for resources is damaging.It hurts the Arctic.Burning fossil fuels adds to climate change.3.Overfishing is

6、 a problem.Whales and dolphins are hunted.Banned,but some countries still doing it.3text 2 ：main argument 主论点 We must explore the oceans which cover most of it.2022-10-612check the arguments and evidence in Text2.argument evidence1.Sea exploration is important for our future.Scientific research ship

7、s can help address important issues like climate change.2.Understanding more about the sea will also help us manage its resources better.New medicines,food resources and energy.Predict events such as earthquakes.33.We need new resources for future development.Vast amounts of resources may be under t

8、he sea and ice.Look at the two charts below and decide which one supports which text.P33 2_Text 2_Text 1Writing:Argumentative essay on sea explorationBased on your note,write an argumentative essay on sea exploration,expressing your opinions with supporting facts.The following questions may help you

9、.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 protection and exploitation?Use the PEEL method to help structure your argument.Point What point do you want to make?EvidenceWh

10、at facts and examples can you find to support 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.【文章架构】明确体裁话题议论文，探索海洋确定时态人称一

11、般现在时，第一人称布局文章架构首段：提出论点中段：事例论据尾段：明确结论列出核心要点1.使海洋可持续发展2.了解海洋环境3.更好地了解气候Useful ExpressionsMany nations have been faced with the problem of.Recently the problem has been brought into focus.Recently the issue has aroused great concern among.Nowadays there is a growing concern over.Never in our history ha

12、s the idea that.been so popular.Faced with.quite a few people argue that.According to a recent survey.With the rapid development of.论点Some people think/believe that.,other argue/claim that.The opposite/reverse is.Obviously it has both advantages and disadvantages .has many advantages.For example.How

13、ever,just as every coin has two sides,.has its disadvantages It play(s)an important rolepart in.With the development of our economy and society，pollution is more and more serious论据From what has been discussed above,we can draw the conclusion that.It is high time that.We should take measures to contr

14、ol the rapidly increasing world population The government decided to take strong measures against.It is necessary that steps should be taken to.There is no easy method,but.might be of some help.To solve the above-mentioned problem,we must.In summary,if we continue to ignore the above-mentioned issue

15、,more problems will crop up.结论Sample WritingEven 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

16、 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 life forms in the ocean,for example,that fit none of the neat categories we have

17、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 causing coral to die.We know that using less fossil fuel would cause the process to slow

18、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 environment not very friendly to humans.This requires the development of new technologies that c

19、an 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 in factories and development of artificial limbs for humans.All in all

20、,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 supportocean exploration.假定你是某假定你是某校的宣传校的宣传委员委员李华，应邀李华，应邀为学校网站为学校网站英文版写一篇有关海洋生物保护的英文版写一篇有关海洋生物保护的文章，请根据文章，请根据以下要点以下要点写一篇短文。写一篇短文。1

21、.海洋受污染海洋受污染的现状的现状;2.保护保护海洋的重要性。海洋的重要性。注意注意:1.词数词数100左右左右;2.可适当增加可适当增加细节，以细节，以使文章连贯使文章连贯。The Importance of Protecting Our Oceans As we all know,there are varieties of resources under the sea.However,the past ten years has witnessed that some creatures have died out.Therefore,marine pollution has been

22、 greatly concerned by the whole world.On the one hand,we must make people realize the importance of protecting the ocean.As a matter of fact,to protect the ocean is to protect human beings.On the other hand,the government should take immediate measures to keep the balance of nature.In no way should we abandon protecting the environment.Only by raising peoples awareness of protecting the environment and making great efforts to prevent pollution can the problem be solved.