选修八thereturnofdinosaurs学习教程.pptx

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1、Lets enjoy some pictures Lets enjoy some pictures about dinosaurs.about dinosaurs.第1页/共34页Carnosaurus 食肉龙食肉龙第2页/共34页霸王龙霸王龙tyrannosaurus T.rex 第3页/共34页剑龙剑龙stegosaurs第4页/共34页Velociraptor迅猛龙迅猛龙第5页/共34页三角龙三角龙Triceratops 第6页/共34页雷龙雷龙 brontosaurus第7页/共34页翼龙翼龙pterodactyl第8页/共34页Fast ReadingMatch the main i

2、dea with each paragraph.Para1 explain the impossibility of cloning dinosaurs Para2 conclude that its just a dreamPara3 introduce the topic of the passage第9页/共34页 A.Supportive.B.Neutral(中立的).C.Negative(否定的).D.Subjective(主观的).objective客观的,positive肯定的 impartial 公平的 arbitrary武断的 optimistic乐观的 pessimisti

3、c悲观的critical持批评态度的 cautious谨慎的 indifferent冷漠的 What is the writers attitude towards cloning the dinosaurs?第10页/共34页Part 1 chose the best answerCareful reading1.The film Jurassic Park is popular because _.A.people are interested in the subject of cloningB.all the actors are dinosaursC.it was directed

4、by a scientist who clones dinosaurs D.it proves very interesting第11页/共34页2.Which of the following is true?A.Mice were cloned in 1981.B.Dolly the sheep was the first cloned animal.C.The name of the cloned cow is“Bison”.D.China was successful in cloning mammals.第12页/共34页Advantage of diversityDisadvant

5、age of diversityDiversity in a group of cloned animalsIf there is a new illness,some of these animals may die,but others will survive and passed on the ability to resist that disease to their children.They would all have the same arrangement of genes and so they might all die of the same disease.第13

6、页/共34页People interested inNot only film makers but also _._ for its impossibility Perfect DNA is needed.There is not enough _ in the group.A(n)_ would be needed for the cloned extinct animals.ordinary peopleReasonsdiversitysuitable habitat_The chance of dinosaurs returning to the earth is _.Conclusi

7、onmerely a dreamCareful Reading第14页/共34页True or False1.The animals that have disappeared from the earth,like dinosaurs,can be brought back to life through cloning.2.If we can clone any extinct animals,we should let them live in a zoo.第15页/共34页Whether the dinosaurs should be cloned?The introduction T

8、he reasons for the impossibility of cloning dinosaurs The conclusionsummary第16页/共34页1.克隆凶猛和灭绝的野生动物的可能性一直使电影制片商感到兴奋。The possibility _ _has always excited film makers.of cloning fierce and extinct wildof cloning fierce and extinct wildWords,phrases and sentencesanimalsanimals2.But they are not the onl

9、y ones So the chances of dinosaurs ever returning to the earth is merely a dream.only adj.仅有的,唯一的,最适当的 We were the only people there.She is the only person for the job.adv.只有,仅 I asked it merely out of curiosity.Its not merely a job,but a way of life.He goes there simply because he likes to.It was j

10、ust an ordinary day.(只是,仅仅是)第17页/共34页3.The popularity of the film such as Jurassic Park,_ a scientist clones several different kinds of extinct dinosaurs,proves how ideas struck a mixture of fear and excitement into peoples hearts.in whichin which在电影侏罗纪公园中，一位科学家克隆了几种不同的恐龙。这样的电影很受欢迎，证实了这一想法使人们感到既兴奋又恐

11、惧。宾语从句宾语从句_定语从句定语从句strike into ones heart:strike into ones heart:使刻骨铭心使刻骨铭心他的话使我深感恐惧。His words strike terror into my heart第18页/共34页strike：(过去式过去式_;过去分词过去分词 _)1).He fell,striking his head on the edge of the table._2).The area was struck by an outbreak of cholera._3).An awful thought has just struck m

12、e._4).They struck for better working conditions._5).The clock has just struck three._6)strike a match_Exx.译译:1)Strike while the iron is hot._2)我突然想到我们如何能改善局面了。我突然想到我们如何能改善局面了。_struckstruck碰，撞，打碰，撞，打（灾难，疾病等）侵袭，爆发（灾难，疾病等）侵袭，爆发想起，想到想起，想到罢工罢工报时，敲响报时，敲响划，擦火柴划，擦火柴趁热打铁趁热打铁It struck me how we could improve

13、the situation.第19页/共34页4.要想克隆灭绝动物，我们还有很长的路程要走。We are _ able to clone extinct animals.a long way from beinga long way from beingWe are far from being able to clone extinct animals.way n.(两点之间的)距离,时间段想要完全适应，她还有很长的路程要走。She still has a long way to go before she fully fits in.a way to do/of doing sth.做的方

14、法/手段 get into the way of doing sth.养成的习惯 get in the way of sb.doing sth.挡的路,防碍 make way for sb.给让路/位置 第20页/共34页5.不时地会有人提议，克隆技术将有可能使地球上已经灭绝的动物(如恐龙)复活。_ people suggest that the animals that have disappeared from the earth,like dinosaurs,can possibly _ through cloning.From time to timeFrom time to time

15、be brought back to lifebe brought back to lifefrom time to time有时,间或,偶尔,=occasionally,now and then,sometimes,at timese.g.:She has to work at weekends from time to time第21页/共34页bring back to life 使复生使复生 come back to lifebring sb./sth.back:把把送回，归还送回，归还Please bring back all library books by the end of

16、the week.bring sth back:使回忆起，使想起；使回忆起，使想起；恢复，重新使用恢复，重新使用The photographs brought back many pleasant memories.Most people are against bringing back the death penalty.bring sb.sth./bring sth.back(for)sb.(给给)带回带回I brought a T-shirt back for Mark.第22页/共34页6.All efforts of cloning an animal will be _if th

17、ere is not enough diversity in the group to overcome illnesses.如果某个动物群体中没有足够的多样性以战如果某个动物群体中没有足够的多样性以战胜疾病，那么克隆这种动物的所有努力都将胜疾病，那么克隆这种动物的所有努力都将是无用的。是无用的。in vainin vain_状语从句状语从句vain:adj.徒劳的，枉然的，无结果的；徒劳的，枉然的，无结果的；自负的，自恃过高的自负的，自恃过高的 vain attempt/hope/effort etc 徒劳的尝试徒劳的尝试/希望希望/努力努力She closed her eyes tight

18、ly in a vain attempt to hold back the tears.Shes too vain to wear glasses.第23页/共34页in vain:枉费心机，徒劳无益，白费力气枉费心机，徒劳无益，白费力气All our efforts were in vain.They tried in vain to persuade her to go.第24页/共34页7.Diversity in a group means having animals _ their genes _(arrange)in different ways.群中的多样性指的是拥有基因排列方

19、式不同群中的多样性指的是拥有基因排列方式不同的动物的动物.withwitharrangedarranged_定语定语In different ways意为“以不同的方式”,作状语第25页/共34页pass on(to sb.)(用后)传递,传给 I passed your massage on to my mother.8.The advantage is that if there is a new illness some of these animals may die,but others others will survive and _ the ability _ that dis

20、ease to the next generation.pass on pass on to resistto resist_表语从句表语从句_状语从句状语从句其优点是，如果发生了某种新的疾病，这类动物中的一些可能会死去，而另外一些却能存活下来。第26页/共34页 resist vt._抵抗；对抗抵抗；对抗resist sth.抵制；阻挡某事resist doing sth.反对/抵制做某事cant/couldnt resist doing sth=cant/couldnt help doing sth 忍不住做某事 The bank strongly resisted cutting int

21、erest rates.She was charged with resisting arrest.He couldnt resist showing off his new car.知识链接：知识链接：resistance：n.抵制，抵抗抵制，抵抗 resistant:adj.抵制的，抵抗的抵制的，抵抗的be resistant to 对对有抵抗力有抵抗力第27页/共34页9.就我们现在所知，你不可能克隆那些已经绝种了一万年以上的动物。_ we know now,you cannot clone animals that have been extinct longer than 10,00

22、0 years.Based on what/Based on what/As far asAs far as based on/upon 以以为基础为基础,依据此处依据此处为悬垂分词做状语。为悬垂分词做状语。其结构为其结构为:base sth.on/upon sth.is based on/upon第28页/共34页Practice:课文佳句仿写 1.【原句】The advantage is that if there is a new illness some of these animals may die,but others will survive and pass on the a

23、bility to resist that disease to the next generation.其优点是,如果发生了某种新的疾病，这类动物可能会死去,而另外一些却能存活下来，并且把这种抗疫力传给下一代。模仿要点 句子结构：表语从句+条件句,【模仿1】网上购物的弊端是，如果你在网上买了质量差的商品，你不可能会换的了；但你可以在真正的商店里精挑细选。_ The disadvantage of shopping on line is that if you bought a poorly made goods on the Internet,it is impossible for you

24、 to change it,but you can have a careful look at the goods in a real shop and choose the best one.第29页/共34页【模仿2】早起的优势是，如果我们早起，我们将有机会享受清新的空气和早晨的宁静，但并不是每个人都认为这是令人遗憾的事情。_The advantage of getting up early is that if we get up early,we will have the opportunity of enjoying the fresh air and calmness of t

25、he morning,but not everybody think it a regrettable thing.第30页/共34页2.【原句】Based on what we know now,you cannot clone animals that have been extinct longer than 10,000 years.就我们现在所知，你不可能克隆那些绝种了一万年以上的动物。模仿要点 句子结构：V-ed+what引导的宾语从句，+主句+定语从句【模仿1】根据调查所示，我们可以更好地理解我们对大自然所做的一切。_Based on what was shown on the

26、survey,we can make a better understanding about the thing that we have done to nature.第31页/共34页【模仿2】根据我们所读到的，我们可以得出结论是人类该对环境污染负责。_Based on what weve read,we can make a conclusion that it is human beings that are to blame for the pollution of the environment.第32页/共34页1.Write a composition about whether the dinosaurs should be cloned and hand in tomorrow.2.Summarize this unit.3.Finish Ex.1 Page16;4.Prepare the unit3 5.Recite one of compositions of type2 Homework第33页/共34页感谢您的观看！第34页/共34页