河北省新乐市第一中学高中英语必修三课件：UNIT 4 （共33张PPT） .ppt

1、Unit 4systemtheoryreligion religiousbillion,million globe,globalviolent,violence atmosphere unlike persent,presence harmful,be harmful toharm do harm to act action reactionmultiplyexist,existence puzzle,puzzling,puzzledbiology,biologist,geologist,physicistgravitysatellitegentle,gently climate crash

2、float weightlesslyexhaust,exhausted,exhaustinglay eggsgive birth toin ones turnprevent fromblock outcheer upnow thatbreak outwatch out1.太阳系2.全球的3.理论，学说4.宗教5.气氛6.激烈的，强暴的7.有害的8.乘，增加9.下蛋10.产生，分娩11.挡住12.既然13.当心14 重力15.人造卫星16.温和的17.气候Main BodyParagraph 1:Paragraph 2:Paragraph 3:Paragraph 4:Paragraph 5:Th

3、e arrival of humans and their impact on the earthThe development of plants and animals on the earthThe importance of water for lifeThe formation of the earthA widely accepted theory about the formation of the universeQ1:Whats the main idea of the text?A.how did water begin?B.how did earth begin?C.ho

4、w did man begin?D.how did life begin?The development of lifewaterPlants in the waterShellfish and fishPlants on landInsects and amphibiansReptiles Dinosaurs Mammals A cloud of dustCombine into a solid ballExplodewith fire&rock(produce carbon,nitrogen,water vapour and other gases)atmosphereCool downw

5、ater appeareddissolve harmful gases into Life beganLife developedA cloud of dust a solid ball presence of water on the water shellfish&other fish plants begin to grow on dry land insects and amphibians appear retiles appear dinosaurs appear mammals appearThe development of lifesmall plants growon th

6、e water appearshellfish&other fishplants begin to grow on drylandinsects and amphibians appearreptiles appeardinosaurs appearmammals appearIn some films and stories,we can see dinosaurs and people together.Is it right?Why?Because dinosaurs died out long beforehuman beings developed on the earth.Acco

7、rding to a widely accepted _,the universe began with a“Big Band”that threw matter _.For several billion years after that,the earth was just a cloud of dust.The earth became so _ that it was not clear _ the shape would last or not.It _ loudly with fire and rock,which were _to produce the water vapour

8、 and other gases.Then small plants grew.They _and filled the oceans and seas with oxygen.Many millions of years later the first green plants began to _on land.When the plants grew into forests,_appeared for the first time.They produced young generally by _eggs.theoryin all directionsviolentwhetherex

9、plodedin timemultipliedgrowreptileslayingAfter that,dinosaurs developed.They _ eggs too and_ on the earth for more than 140 million years.Why the dinosaurs suddenly disappeared still _ a mystery.When they disappeared,_ became more important.Now small clever animals with _appeared and _all over the w

10、orld.As time _ they covered the earth and they are putting too much carbon dioxide into the _,which _heat _ _ from the earth into space.Whether life will continue on earth for millions of years to come will _whether this problem can be solved.laidexistedremainsmammalshands and feetspreadwent byatmos

11、pherepreventsfrom escapingdepend on1.According to a widely _(接受)theory,the universe began with a Big Bang that threw matter _(各个方向)。2._ it was to become was uncertain.3.The earth became so violent _ it was not clear _ the shape would last or not.4.They were in time to produce carbon,nitrogen,water v

12、apour and other gases,_ were to make the earths atmosphere.5._ is even more important is that as the earth cooled down,water began to appear on its surface.acceptedin all directionswhatthatwhetherwhichwhat6.It was not immediately obvious _ water was to be fundamental to the development of life.7._ m

13、any scientists believe is _ the continues presence of water allowed the earth to dissolve harmful gases and acids into the oceans and seas.8.This produced a chain reaction,_ made it possible for life to develop.9.They multiplied and filled the oceans and seas with oxygen,_ encouraged the later devel

14、opment of early shellfish and all sorts of fish.thatwhatthatwhichwhich10._ they suddenly disappeared still remains a mystery.11.They are putting too much carbon dioxide into the atmosphere,_ prevents heat from escaping from the earth into space.12.So _ life will continue on the earth for millions of

15、 years to come will depend on _ this problem can be solved.Whywhichwhetherwhether1.The discovery of gold in Australia led thousands to believe that a forture _.A.is made B.would make C.was to be made D.had made2.In such dry weather,the flowers will have to be watered if they _.(2001上海)A.have survive

16、d B.are to survive C.would survive D.will survive1.他处于极度痛苦之中，因此他表现得很粗暴，一切都以暴力对待。He was in violent pain.As a result,he behaved violently and treated everything with violence.2.月球上没有东西生存，因为那里没有水和空气。Nothing exists on the moon as there is no water and no air.3.我们很有可能下周会考试。It is likely that we will take

17、an exam next week.We are likely to take an exam next week.4.玩手机对我们学生有害。Playing mobilphone does harm to us students.Playing mobilphone is harmful to us students.5 他脸上困惑的表情表明了他对那个令人困惑的数学问题感到困惑。The puzzled look on his face suggested that he was puzzled about the puzzling math problemThe puzzled look on

18、 his face suggested that he was puzzling about/over the puzzling math problem.6.只要你不放弃，总有一天你会成功的。7.这周轮到我打扫教室了。8.我们轮流擦黑板。9.没有什么能够阻止我努力学习。You will succeed in time so long as you dont give up.It is my turn to clean the classroom this week.We take turns to clean the blackboard.Nothing could prevent me f

19、rom studying hard.10.他的努力学习使他成功成为可能。His hard study made it possible for him to succeed.11.那个孩子撒谎说刚才躺在这的公鸡两天前下了两个蛋The boy lied that the cock that lay here just now laid two eggs two days before.12.恐龙为什么突然消失了还是一个迷Why the dinosaurs suddenly disappeared still remains a mystery.很明显人类让地球生病了.很多树木被砍伐引发了很多沙尘

20、暴.有害气体未经处理就被排(release)到大气中.由于二氧化碳的过度排放(over emission)全球变暖越来越严重.我们要怎么做才能阻止地球进一步被污染呢?首先,我们应该尽可能多的植树来吸收二氧化碳.其次,我们可以循环使用像水,纸张等资源.第三,如果我们更多的使用公共交通的话会更节能更环保.只有当我们意识到好的环境对我们的生活是根本的时候才能有效果.未来的生活是否回持续下去取决于我们人类自己.It is obvious that man is making the earth sick.Many trees have been cut down,thus causing more s

21、andstorms.Many harmful gases have been released into the atmosphere without being dealt with.The global warming is becoming increasingly serious as a result of the over emission of carbon dioxide.What can we do to prevent the earth from being polluted further?First,we should plant as many trees as p

22、ossible,for they can take in carbon dioxide.Second,we are expected to recycle the resources,such as water and paper.Third,it would be better if we use public transportation,which will be energy saving and environmentally friendly.Only when we all realize a good climate is fundamental to our life can

23、 we make a difference.Whether life will continue on the earth depends on us human beings.Using language1.The two boys finally arrived home after three days trip,_(exhaust).2.On weekends,father _ _ _(拖出来)the warm bed and asks me to run with him.3.一旦你掌握了技巧，游泳就不会那么难了。Swimming is not that difficult,once

24、 you _ _ _ _ it.4.The boy looked at his father,_.A.to amaze B.amazing C.amazed D.being amazed5.Its just _ among countries to host the Olympics as to win an Olympic medal.A.much as a competition B.as a much competitionC.as much a competition D.a competition as much6.Some parts in South China have exp

25、erienced _this year as they did last year.Atwice as much rain Brain twice as muchCas twice much rain Dtwice rain as much7.Before we left,Li Yanping explained to me that the force of gravity would change three times and _ the first change would be the most powerful.飞机在山中坠毁，结果死了60人。2.Be careful when y

26、ou open an unknown document.It might contain the deadly virus which could entirely _ your computer system in a minute.A.explode B.crash C.multiply D.dissolve3.强行闯入解散，分手逃离，逃脱出故障，垮掉突破break intobreak upbreak away frombreak downbreak throughThe plane crashed in the mountains,killing 60 people.进站停靠离站，使摆脱困境匆忙穿上停车拆毁恢复健康，度过难关pull inpull outpull onpull uppull downpull throughget throughlive throughThe doctor doubted whether the patient would live through that month.It is hard to see how people will get through the winter.