【课件】Unit 3 Using language 课件-2021-2022学年高中英语人教版（2019）选择性必修第四册

1、UNIT 3 SEA EXPLORATIONExpress 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 author

2、s opinions about the sea exploration ?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). B. Exposition (说明文). C. Practical writing (应用文). D. Argumentation (议论文). 2. What are the three

3、parts in argumentative essay? argument论点; evidence论据; restatement重申/recommendation推荐/a call to action号召Read the two texts silently and find the arguments 划横线and evidence 划波浪线Text 1Para.1 -main argument主论点Sea exploration has caused many problems and will continue to cause more .Part.1: Argument Part.

4、3: Restatement Part.2: Evidence check the arguments分论点 and evidence论据 in it. 1argumentevidence21. 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 probl

5、em. Whales and dolphins are hunted. Banned, but some countries still doing it.3check the arguments分论点 and evidence论据 in it. 1argumentevidence21. Exploration causes pollution. Deepwater Horizon oil spill Plastic pollution2. Mining for resources is damaging. It hurts the Arctic. Burning fossil fuels a

6、dds to climate change.3. Overfishing is 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 .2022/9/2612check the arguments and evidence in Text2.argumentevidence1. Sea exploration is importa

7、nt for our future. Scientific research ships 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 deve

8、lopment. Vast amounts of resources may be under the 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 s

9、upporting facts.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 protection and exploitation?Use the PEEL method to help structure your

10、argument.Point What point do you want to make?EvidenceWhat 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 p

11、oint 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

12、. Nowadays there is a growing concern over . Never in our history has 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 . Obvious

13、ly it has both advantages and disadvantages . has many advantages. For example. However, 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 ab

14、ove, we can draw the conclusion that . It is high time that . We should take measures to control 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 s

15、olve the above-mentioned problem, we must . In summary, if we continue to ignore the above-mentioned issue, 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

16、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 should explore the ocean, first and foremost, because we do not know what we do not know. We thought we knew many about the o

17、cean, 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 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 oc

18、ean acidification. We know that it is causing 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

19、research, we have to enter an extreme environment 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, th

20、e technology of a mechanical arm to collect 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 supportocean exploration.假定你是某校的宣传委员李华，应邀为学校网站英文版写一篇有关海洋生物保护的文章，请根据以下要点写一篇短文。1. 海洋受污染的现状;2. 保护海洋的重要性。注意:1.词数100左右; 2.可适当增加细节，以使文章连贯。The Importance