model+3+unit+4Astronomy.ppt

,Unit 4 Astronomy: the science of the stars,explode surface method prevent spread develop astronomy,E.burst suddenly with a loud noise,A. outside of something,B.way of doing something,F.stop something happening,D.become wider;go to other places,C.grow up; take shape; become larger or more complete,G.scientific study of the stars,quiz,1.Who wrote the book The Origin of Species (物种起源) ? A Issaac Newton B Albert Einstein C Charles Darwin,2.Who is famous for the theory of Black Hole theory? (黑洞) A Hawking B Newton C Einstein,3 How many big planets are there in the Solar System? A 7 B 8 C 9,4. Which one belongs to amphibian? A frog B snake C dinosaur,5. Which one belongs to reptile? A fish B snake C bird,8. On which planet are there lives at present ? A the Venus B the Earth C the Mars,7.which gas is the most important for life? A. carbon dioxide (CO2 ) B. oxygen(O2) C. nitrogen (N2),6 which one belongs to mammal ? A dinosaur B dog C fish,HOW LIFE BEGAN ON THE EARTH,Scan the text and put the development of life into right order.,B. presence of water,A. green plants and animals on land,D. small plants and animals in the water,C. humans appear,B,D,A,C,presence of water,green plants and animals on land,small plants and animals in the water,humans appear,What happened after the earth exploded?,the earth exploded,water vapour,carbon dioxide,oxygen,nitrogen,other gases,A.the earths atmosphere,B.Big Bang,C.The earth exploded and produced kinds of gases,D.water,E.the earth cooled down,F.a cloud of energetic dust,G. slowly combine into a ball,1,2,3,4,5,6,7,Put these sentences into the right order,A,H,B,D,F,G,E,C,A,H,B,C,F,G,E,D,water,Plants in the water,Shellfish and fish,Insects and amphibians,Reptiles,Dinosaurs,Mammals,Plants on land,1. What it was to become was a mystery until the dust began to slowly combine into a ball moving around the sun.,_ （使大家吃惊的是）is that he didnt come to the meeting.,What surprised everybody,2. _（他所做的） 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 had been admitted to key universities. A.What;because B. What;that;C. That;what D.That;because,A,B,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 solid sphere solid furniture,1) Matter has three states: solid, liquid and gas.,2) When water freezes, it becomes solid and we call it ice.,adj. 固体的；实心的,无空隙的；结实的，坚固的,be to (do): (something) will definitely happen, or it must happen 不可避免要发生或必须发生,e.g.They said goodbye, knowing that they were never to meet again.,She is to be honoured for this great work.,Mr. Clark said to his daughter, “You are to be home by 10 oclock.”,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）突然或迅速增加,The firework exploded in his hand and he was 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.爆炸性的，易爆炸的 n.炸药，爆炸物,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；最后 总有一天我会遇见他。,in/out of time: in/not in the correct time 合/不合节拍 观众合着音乐的节拍拍手。,She will be back in time to prepare dinner.,Ill see him in time.,The audience clapped in time to the music.,与time相关的短语: 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;准时,从前,暂时,不时地,4. As the earth cooled down, water began to appear on its surface. 随着地球的冷却, 地球的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 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.,5. Nobody knew that it was going to be different from other planets going round the sun.,be very / much / quite / entirely / totally different from与不同,City life is quite different from country life.,1）城市生活和农村生活很不同。,2）他们的品位和我不同。,Their tastes are different from mine.,There are differences betweenand tellfrom the same as be similar to,与之间有不同之处,把与区分开来,与一样,与相似,6. It allows the earth to dissolve harmful gases, which,allow vt. 允许、许可、容许allow+n./pron./doing allow sb. to do be allowed to do,My 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?,我们可以用电脑么？,be harmful to,do harm to sb. =,1) Pollution is especially harmful to animals.,2) Smoking will do you a lot of harm.,对有害,do sb. harm 伤害某人，对某人有害处,it作形式宾语，其真正的宾语可以是不定式，动名词和从句。,The foreign Minister said, “_ our hope that the two sides will work towards peace. ”(2004BJ) 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. (NMET2004) 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,D,C,D,7. That made it possible for life to begin to develop.,4. Why? I have nothing to confess. _ you want me to say? A. What is it that B. What it is that C. How is 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; where,A,A,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 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.,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 wheat will encourage farming.,玉米和小麦的高价将促进农业的发展。,My success encouraged me to continue.,我的成功鼓励我继续干下去。,He encouraged me to learn dancing.,他鼓励我去学跳舞。,10. Many millions of years later the first green plants began to appear on land.,late,adj. 迟到的，晚的；前任的；以前的；已故的,later,adv. 后来，较晚时候,过后 adj. late的比较级(更迟的,更后的),latest,adj. 最新的,lately,adv. =recently 近来,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?,11. When the plants grew into forests, reptiles appeared for the first time.,她渐渐出落成一个美丽的姑娘。,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.,12. They produced young generally by laying eggs.,Its generally believed that一般认为,generally speaking 一般而言，概括来说,1) Its generally believed that girls work harder than boys do.,2) Generally speaking, women cry more easily than men.,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; lain C. lied; laid; lain D. lied; lay; laid,D,13. Small clever animals, now with hands and feet, appeared and spread all over the earth.,vi.,散布, 传播，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.,14. They are putting too much carbon dioxide into the atmosphere, which prevents heat 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, ,如果没有什么阻碍的话 , ,15. Whether life will continue 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) He depends on his pen for his living.,wh-,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 sb. depend on s