model3unit4Astronomy市公开课金奖市赛课一等奖课件

1、第1页Unit 4 Astronomy: the science of the stars第2页explodesurfacemethodpreventspreaddevelopastronomyE.burst suddenly with a loud noiseA. outside of somethingB.way of doing somethingF.stop something happening D.become wider;go to other placesC.grow up; take shape; become larger or more completeG.scienti

2、fic study of the stars第3页quiz1.Who wrote the book The Origin of Species (物种起源) ?A Issaac Newton B Albert Einstein C Charles Darwin2.Who is famous for the theory of Black Hole theory? (黑洞) A Hawking B Newton C Einstein3 How many big planets are there in the Solar System? A 7 B 8 C 9 4. Which one belo

3、ngs to amphibian?A frog B snake C dinosaur 5. Which one belongs to reptile?A fish B snake C bird 第4页8. On which planet are there lives at present ?A the Venus B the Earth C the Mars7.which gas is the most important for life?A. carbon dioxide (CO2 ) B. oxygen(O2) C. nitrogen (N2)6 which one belongs t

4、o mammal ?A dinosaur B dog C fish第5页HOW LIFE BEGAN ON THE EARTH第6页 Scan the text and put the development of life into right order.B. presence of waterA. green plants and animals on landD. small plants and animals in the waterC. humans appearBDAC第7页 presence of watergreen plants and animals on land s

5、mall plants and animals in the water humans appear第8页What happened after the earth exploded?the earth explodedwater vapourcarbon dioxideoxygennitrogenother gases 第9页 A.the earths atmosphereB.Big Bang C.The earth exploded and produced kinds of gasesD.waterE.the earth cooled downF.a cloud of energetic

6、 dustG. slowly combine into a ball12345 67Put these sentences into the right order第10页AHBDFGECAHBCFGED第11页waterPlants in the waterShellfish and fishInsects and amphibiansReptilesDinosaursMammalsPlants on land第12页1. What it was to become was a mystery until the dust began to slowly combine into a bal

7、l moving around the sun. _ （使大家吃惊是）is that he didnt come to the meeting. What surprised everybody 2. _（他所做） added to our difficulty. What he did _ we cant get seems better than _ we have. What; what B. What; that C. That; that D. That;what_ made the school proud was _ more than 90% of the students h

8、ad been admitted to key universities. A.What;because B. What;that;C. That;what D.That;becauseAB第13页2.The problem was that the earth became violent because it was not clear whether the solid shape was to last or not.问题是地球开始变得激烈动荡，不知道这个固体形状是否会继续下去。n. 固体 solid, (liquid液体, gas气体)solid fuels solid food a

9、 solid sphere solid furniture1) Matter has three states: solid, liquid and gas. 2) When water freezes, it becomes solid and we call it ice. adj. 固体；实心,无空隙；坚固，坚固第14页 be to (do): (something) will definitely happen, or it must happen 不可防止要发生或必须发生 e.g.They said goodbye, knowing that they were never to m

10、eet again.She is to be honoured for this great work. Mr. Clark said to his daughter, “You are to be home by 10 oclock.” 第15页3.It exploded loudly with fire and rock, which were in time to produce the water vapour, 1). （使某物）炸开，爆炸 2). （指感情）激发 3). （指人口）突然或快速增加 The firework exploded in his hand and he wa

11、s hurt seriously. I was frightened when she exploded into loud laughter. Now it is not easy to find jobs with the exploding population. explosion n. 爆炸（声） explosive adj.爆炸性，易爆炸 n.炸药，爆炸物 第16页in time (for sth/to do sth): not late 及时；不迟她来得及回来准备晚饭。in time: sooner or later; eventually 迟早；最终总有一天我会遇见他。in/o

12、ut of time: in/not in the correct time 合/不合节拍观众合着音乐节拍拍手。She will be back in time to prepare dinner.Ill see him in time.The audience clapped in time to the music.第17页 与time相关短语: in no time at times at a time once upon a time 立刻,马上有时每次;依次从前 on time at one time for the time being from time to time 按时;按

13、时从前暂时不时地第18页4. As the earth cooled down, water began to appear on its surface. 伴随地球冷却, 地球表面就开始出现了水。cool adj.凉快；冷静；冷淡 v. （使）变冷；冷静下来 1) Lets sit in the shade and get cool. 4) The rain has cooled the air.2) I knew I had to keep cool.3) His play received a cool response from the public.5) Let your soup

14、cool a little before you drink it.6) A heated argument can be settled better if both sides cool down first.7) I tried to cool her down but she was still very angry. 第19页5. Nobody knew that it was going to be different from other planets going round the sun. be very / much / quite / entirely / totall

15、y different from与不一样 City life is quite different from country life. 1）城市生活和农村生活很不一样。2）他们品位和我不一样。Their tastes are different from mine. There are differences betweenand tellfromthe same asbe similar to与之间有不一样之处把与区分开来与一样与相同第20页6. It allows the earth to dissolve harmful gases, which allow vt. 允许、许可、允许a

16、llow+n./pron./doing allow sb. to do be allowed to doMy father doesnt allow smoking at home. In fact he doesnt allow us to smoke anywhere at any time.父亲不允许在家里吸烟。实际上，他不允许我们在任何地方任何时候吸烟。Are we allowed to use the computer?我们能够用电脑么？第21页be harmful todo harm to sb. =1) Pollution is especially harmful to ani

17、mals. 2) Smoking will do you a lot of harm. 对有害 do sb. harm 伤害某人，对某人有坏处第22页it作形式宾语，其真正宾语能够是不定式，动名词和从句。 The foreign Minister said, “_ our hope that the two sides will work towards peace. ”(BJ)A. This is B. There is C. That is D. It is 2. I like _ in the autumn when the weather is clear and bright. (N

18、MET)A. this B. that C. it D. one 3. Why dont you bring _ to his attention that you are too busy to do it?A. this B. that C. what D. it DCD7. That made it possible for life to begin to develop.第23页 4. Why? I have nothing to confess. _ you want me to say? A. What is it that B. What it is that C. How i

19、s it that D. How it is that 5. Was it at the school _ was named after a hero _ he spent his childhood? A. which ; that B. where; where C. that; where D. which; whereAA第24页8. They multiplied and filled the first oceans and seas with oxygen .multiply (数目上)增加，增多；乘；（使）繁殖 1) Our problems have multiplied

20、since last year. 2) multiply 2 and 5 and you will get to 10. 4) The plants here multiply rapidly. 3) 6 multiplied by 5 is 30.= Multiply 6 by 5 to make 30.第25页9. This encouraged the development of early shellfish and all sorts of fish.encourage 鼓舞；促进；怂恿。后接名词、代词，也可接不定式作宾语补足语。如：High prices for corn and

21、 wheat will encourage farming.玉米和小麦高价将促进农业发展。My success encouraged me to continue.我成功勉励我继续干下去。He encouraged me to learn dancing.他勉励我去学跳舞。第26页10. Many millions of years later the first green plants began to appear on land. late adj. 迟到，晚；前任；以前；已故 later adv. 以后，较晚时候,过后 adj. late比较级(更迟,更后) latest adj.

22、最新 lately adv. =recently 最近 1) Mr. Zhu Rongji is the late Prime Minister of China. 3) She arrived in London on Monday,2 days later he left for NewYork. 5) What have you been doing lately? 2) He is often late for school. 4) Have you heard about the latest news? 第27页11. When the plants grew into fores

23、ts, reptiles appeared for the first time. 她渐渐出落成一个漂亮姑娘。生长成为,渐渐成为或变得（不用于被动语态）She is growing into a beautiful young woman.第28页12. They produced young generally by laying eggs. Its generally believed that普通认为 generally speaking 普通而言，概括来说 1) Its generally believed that girls work harder than boys do. 2)

24、 Generally speaking, women cry more easily than men. 第29页动词过去式过去分词现在分词意义lielaylainlying躺，位于lieliedliedlying撒谎laylaid laidlaying搁，放，下蛋The naughty boy _ to me that the hen that _ there just now had_ two eggs the day before.A. laid; laid; laid B. laid; lay; lainC. lied; laid; lain D. lied; lay; laidD第3

25、0页13. Small clever animals, now with hands and feet, appeared and spread all over the earth. vi. 散布, 传输，蔓延, 伸展，扩展 vt. 铺开，摊开 1) The news spread through the school very quickly. 2) I spread a new cloth on the table. 第31页14. They are putting too much carbon dioxide into the atmosphere, which prevents h

26、eat from escaping from the earth into space. 阻止某人做某事 :prevent sb. (from) doing sth. stop sb. (from) doing sth. keep sb. from doing sth. 1) We must prevent them from making trouble. 2) You should prevent the child from injuring himself. If nothing prevents, 假如没有什么妨碍话 , 第32页15. Whether life will conti

27、nue on the earth for millions of years to come will depend on whether this problem can be solved. depend on sb. / sth. sb. to do sth. sb. doing sth. sb. /sth. for sth. 相信，信赖, 依靠,依赖,视而定，取决于 1) When you are in a strange place youd better depend on the map. 2) You cant depend on others to help you. 3)

28、He depends on his pen for his living. wh-第33页4) Success depends on your own hard work.depend on it 没问题，请放心（句末或句首） That /It (all) depends. 那得看情况而定 1) Depend on it, youll succeed. 2) He may support me, but it depends . Tell him what you want to say; hes a man to _. A. count B. believe C. trust D. depend 解析:相信/信赖某人:count on sb. believe in