Unit 3 Reading and writing (1)-ppt课件 2021-2022学年新人教版高中英语选择性必修第四册 .pptx

1、高二人教版英语选择性必修四第三单元Unit 3 Sea explorationLesson 5 Reading and writingRevisionIn the last period,we have:1.learnt about whales and other sea animals;2.raised the awareness of marine ecosystem conservation.At the end of this lesson,you will be able to:1.understand the basic structure of an argumentative

2、 essay;2.distinguish arguments and evidence in the text;3.master the language that expresses agreement and disagreement;4.write an argumentative essay.Aims of this lessonLead-in:Do you think the sea should be explored?A students answer:I think sea exploration is necessary.Not only can we gain more r

3、esources under the sea,but also it is a good way to improve our understanding of life on the Earth.Main task:Express your opinions on whether the sea should be explored.Read for genreSkim the two texts on P32 in the textbook and answer:What is the text type of the two texts?Text type:argumentative e

4、ssay(议论文议论文)The argumentative essay is a genre of writing with the feature of persuading readers that something is true.It always begins with an opinion about an ongoing controversy or discussion,and then gives reasons to support that opinion.Read Para.1 of each text and find out the thesis statemen

5、t(中心论点中心论点)of each text.Read for structureGroup work:Read the rest of the texts and draw a structure tree for each text.Text 1Text 2+argument 1:Sea exploration is important for our future.argument 2 argument 3Pair work:Read the two texts again and find out the arguments and evidence.Read for argumen

6、ts and evidencearguments evidenceText 1 Para.2argumentevidence 1evidence 2arguments evidence1 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 an issue.Whales

7、and dolphins are hunted.Banned,but some countries still doing it.arguments evidence1 Sea exploration is important 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 medici

8、nes,food resources and energy Predict events such as earthquakes3 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 onesupports which text.(TB P33 Ex.2)Text 2Text 1Summary of structure analysis A common m

9、ethod for writing an argumentative essay is the five-paragraph approach.Both texts follow the basic pattern of a three-point essay,which is:Para.1:thesis statementPara.2:argument 1+evidencePara.3:argument 2+evidencePara.4:argument 3+evidencePara.5:conclusion/restatementRead the two texts again and f

10、ind out the following expressions:Expressions that prove the negative side:.cause many problems.is very damaging.negative cycle.is another problem.without mercy Expressions that prove the positive side:.help address important issues More research is necessary.help manage its resources better.help us

11、 discover new medicines.help us predict eventsRead for language Group work:brainstorm more expressions:Expressions that show agreement:agree that.approve of the idea that.Supporters think that.are for the idea that.support sth.Expressions that show disagreement:disagree that.dispprove of the idea th

12、at.Opponents think that.are against the idea that.oppose sth./be opposed to sth./object to sth.1.有些人同意海洋探索，因为这能帮助我们解决如气候变化有些人同意海洋探索，因为这能帮助我们解决如气候变化 的问题。的问题。Some people agree with sea exploration,because it can help us address issues such as climate change.2.有些人反对海洋探索。他们觉得这会造成很多问题。有些人反对海洋探索。他们觉得这会造成很

13、多问题。Some people are opposed to sea exploration,which they think will cause many problems.Translation practiceGroup discussion:What is your opinion about sea exploration?Do you agree with one argument more than the other?Are there any other aspects of sea exploration not mentioned that you think are

14、important?Critical thinkingA students answer:What is 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 t

15、hing.A students answer:Are there any other aspects of sea exploration not mentioned that you think are important?We need to explore the ocean so that we can better understand issues such as acidification(酸化酸化)which leads to sea water to become more acidic,and how to fight these problems.Studying the

16、 ocean causes the creation of new technologies that can help us in other areas.Guided writing task-express your opinions 假如你是李华，最近你们班就假如你是李华，最近你们班就“人类是否应该进行海洋探索人类是否应该进行海洋探索”进行了讨论，请根据讨论结果写一篇短文。进行了讨论，请根据讨论结果写一篇短文。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；2.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；2.破坏生态系统。.注意：开

17、头已给出，不计入总词数注意：开头已给出，不计入总词数Task Analysis1.1.文体与目的：文体与目的：2.2.人称人称：3.3.时态时态4.4.写作要点写作要点Para.1 说明讨论的话题，反映讨论结果说明讨论的话题，反映讨论结果Para.2 说明正方和反方的观点及理由说明正方和反方的观点及理由Para.3 表明自己的观点表明自己的观点议论文，反映讨论结果议论文，反映讨论结果第三人称第三人称一般现在时为主一般现在时为主Language for writing Expressions that prove the negative side:.cause many problems.is

18、 very damaging.negative cycle.is another problem.without mercy Expressions that prove the positive side:.help address important issuesMore research is necessary.help manage its resources better.help us discover new medicines.help us predict events Expressions that show agreement:agree that.approve o

19、f the idea that.Supporters think that.are for the idea that.support sth.Expressions that show disagreement:disagree that.dispprove of the idea that.Opponents think that.are against the idea that.oppose sth./be opposed to sth./object to sth.Checklist In todays class,we have:1.explored two argumentati

20、ve essays and understood the basic structure;2.distinguished arguments and evidence in the text;3.learned about the language that expresses agreement and disagreement;4.analyzed the writing task and got ready for writing.SummaryPlease finish the writing task.HomeworkPlease finish the writing task.A students writing:合并为一段合并为一段内容应改为反对内容应改为反对海洋探索的理由。海洋探索的理由。understandingtoA students writing:creaturesReferenced version:are in favor of made it possible for people to discoverare againstleads the ocean creatures to deathPersonally,I support sea exploration Not only does it