Unit 5 Understanding ideas 课件-(2022）新外研版高中选择性必修第四册《英语》.pptx

1、Unit 5 Into the unknownUnderstanding ideas目录页contentsPre-readingILanguage pointsFast readingIIHomeworkIntensive readingIIIVIPost-readingListening&speaking Read the passage and answer the questions.Listening&speakingOf all the workings of the human body,there is one organ that produces the most intri

2、gue amongst scientists.The brain is the centre of the nervous system and controls most of the bodys activities.Interestingly,it is the back part of the brain that is involved with our vision.The sides of the brain are involved in memory,speech and rhythm.激起的兴趣；引发的兴趣节奏；韵律 Read the passage and answer

3、the questions.Listening&speakingAlthough the brain amounts to only about 2%of total body weight,it uses up to 20%of the bodys energy more than any other organ.Scientists have been conducting research in order to seek greater understanding of the brain,especially since the 1950s.Nevertheless,there is

4、 still a long way to go before we can completely understand the workings of this complex organ.总共达到然而，不过 Listening&speaking1.What functions of the brain are mentioned in the passage?2.What is the current research situation concerning the brain?3.Do you know any other interesting facts about the brai

5、n?Share them with the class.Read the passage and answer the questions.Listening&speaking1.What functions of the brain are mentioned in the passage?The brain functions mentioned include its being the centre of the nervous system and controlling most of the bodys activities,including vision,memory,spe

6、ech and rhythm.Listening&speaking2.What is the current research situation concerning the brain?There is still a long way to go before we can completely understand the workings of the brain.Listening&speaking3.Do you know any other interesting facts about the brain?Share them with the class.Listening

7、&speakingListen to the interview and choose the topic discussed.1.Methods to keep the brain healthy and active.2.Sleep-related mysteries.3.Ways of improving sleep quality.4.Methods of interpreting dreams.TheoriesThe brain needs time to 1_.The brain 3_ whenwere awake.It needs sleep to 4_.Listening&sp

8、eakingListen again and complete the table.rest and do maintenancemakes lots of poisonous chemicals remove these chemicalsDr longs commentsRecent studies prove that our brains 2 _during sleep.There isnt 5 _ to confirm this.It might not be 6 _ for sleep.Listening&speakingListen again and complete the

9、table.remain activeenough datathe most important reason Theories7_ in the brain while were awake,and the brain reflects on them and 8 _ in our dreams.Listening&speakingListen again and complete the table.New connections are formed between different parts uses them to form new memories Dr longs comme

10、ntsA lot of research has been conducted,but we stillcant prove that 9_.Listening&speakingListen again and complete the table.sleep is necessary to this functionListening&speakingListen again and complete the table.Other unanswered questions Why do we“see”our dreams?_ _Why do some people dream in col

11、our andothers dont?Now use the information in the table to give alecture to the class.Do further research if necessary.Listening&speakingComplete the boxes with the expressions from the interview.Could you tell us something about.?Its because.prove that.What other reasons could there be for it?Would

12、 you tell us more about?What other reasons could there be for it?Listening&speakingComplete the boxes with the expressions from the interview.Asking for more information ExplainingCould you tell us something about.?What other reasons could there be for it?Would you tell us more about?Its because.pro

13、ve that Listening&speakingWork in groups.Talk about the investigations into another scientific mystery using the words and expressions in this section.Do further research if necessary.Now talk about how effectively you and your group have used the words and expressions you have learnt in this sectio

14、n and suggest ways to improve.Language points Language points1.abandon v.离弃；逃离 abandon sth./doing sth.放弃某事（物）/做某事abandon oneself to sth./doing sth.陷入；沉浸于abandoned adj.被遗弃的；被离弃的1）科学家被迫放弃对这个问题的研究。The scientist was forced to _ on the problem.abandon doing the research Language points2）在成功的路上有那么多的障碍,他几乎

15、陷入绝望。With so many obstacles on his way to success,he almost _.abandoned himself to despairHe collected more than 7 million _ bricks of different ages.3）他收集了七百万不同年代废弃的砖块。abandoned Language points2.dismiss v.拒绝考虑；否定；(从头脑中)去除；解雇dismiss as.把当作予以否定dismiss from (从头脑中)去除；从解雇1）她声称自己被无理免职。She claims she _ he

16、r post.was unfairly dismissed from2)素食主义者不再被当作怪人。Vegetarians _ cranks.are no longer dismissed as Language points1.make an incredible discovery _ 2.correspond to _ 3.be surrounded by _ 4.apply to _ 5.at its peak _ 做出惊人的发现 与相符；相当于 被环绕着把应用鼎盛时期 Language points6.play a part in _ 7.a couple of _ 8.lead to

17、 _ 9.the downfall of the city _ 10.fall into ruin _ 起作用 一对 导致城市的衰落 变成废墟 Language points1.Intrigued by Maya civilisation from a very young age,15-year-old Canadian William Gadoury thought he had made an incredible discovery from his study of ancient star charts.原因状语 被所吸引Intrigued by the heated debate

18、,he kept watching for two hours.他被这场激烈的辩论吸引住了，一直看了两个小时。Language points1.Intrigued by Maya civilisation from a very young age,15-year-old Canadian William Gadoury thought he had made an incredible discovery from his study of ancient star charts.Paraphrase:Fifteen-year-old Canadian William Gadoury was

19、 fascinated by Maya civilisation from a very young age,and he thought he had discovered something amazing while studying ancient star charts.做出惊人的发现 Language points2.On top of all this was an achievement unique in the Americas at that time:a true writing system.除之外He gets commission on top of his sa

20、lary.他除了薪水之外还拿佣金。Paraphrase:In addition to all this,the Maya established a true writing system,which was an achievement unique in the Americas at that time.完全倒装 Language points3.It was a writing system so complicated that,so far,no one has been able to interpret it completely.修饰 a writing systemPara

21、phrase:It was a writing system which was so complex that,so far,no one has been able to fully understand it.结果状语从句 Language points4.Some recent studies have found that there were far fewer tropical cyclones than usual between 700 AD and 1000 AD.极少I think his effort at school is far from enough.1）看！这

22、个男孩比他爸爸高的多。Paraphrase:The number of tropical cyclones has been shown by some recent studies to be a lot lower than usual in the period from 700 AD to 1000 AD.Look!The boy is far taller than his dad.2）我认为他在学校付出的努力远远不够。Language points5.Meanwhile,the rise and fall of this civilisation must also leave u

23、s thinking about our own past,present and future.1)由于不知道圣诞礼物来自哪里，他决定不拆开。leave sb/sth doing sth 使某人/某物保持状态Without knowing where the Christmas present was from,he decided to leave it unopened.Language points5.Meanwhile,the rise and fall of this civilisation must also leave us thinking about our own pa

24、st,present and future.2)我进不了家，因为我把钥匙落在办公室了。I cant get into my house because I have left my key at my office.Language points5.Meanwhile,the rise and fall of this civilisation must also leave us thinking about our own past,present and future.Paraphrase:At the same time,the way this civilisation developed and then disappeared must also make us think about our own past,present and future.