仁爱英语九年级上U4T3SC ppt.ppt

1、Unit 4 Amazing Science,Section C,Topic 3 I dont think aliens can be found in space.,How beautiful and lively the earth is !,Is it our only home? Talk about your ideas.,Pre-reading questions,1. What does Mars look like?,2. Why do people explore Mars?,3. How much oxygen does the air on Mars have?,Sola

2、r system,Mars is the fourth planet from the sun in our solar system and is named after Mars, the Roman god of war.,A circle is divided into two halves by diameter.,Roman adj. 古罗马的，罗马帝国的 n. 古罗马人，罗马人,1. Do in Rome as the Romans do . 2. All roads lead to Rome.,storm 暴风(雨),But during spring and summer,

3、strong storms can cover the whole surface of Mars.,search v. n. 搜索， 搜查 They searched the woods for the lost child . 辨析：search , search for 敌人在村子里找那个红军。 误：The enemy searched the Red Army man in the village. 正：The enemy searched the village for the Red Army man. 注：search的宾语一般是人或物，比较一下: They searched h

4、im. 他们搜查他（搜身）。 They searched for him. 他们寻找他。,Important points:,It is reported that 据报道(悉、传说） It is said that 据说 It is known that 众所周知 It is given out that 据称,1a Read and understand,1b Work alone,Diameter: _ Color: _ Shape: _ Climate: _ _ Gravity: _ Distance from the sun: _ _,Read 1a again and write

5、down the information about Mars.,It is 53% as wide as that of the earth.,It is red and orange.,It looks like a ball.,During spring and summer, strong storms can cover the whole surface of Mars.The temperature is between -138 and 28.,It is about two-fifths as strong as it is on earth.,Mars goes aroun

6、d the sun,at a distance of about 228 million kilometers.,Read key sentences and learn.,1.Its diameter is 53% as wide as that of the earth.,2. The gravity on the surfae of Mars is about two-fifths as strong as it is on earth.,3.The population of this city is twice as large as that city.,“是的百分之几/几分之几/

7、几倍”,专家小提示： twofifths as strong as 相当于的五分之二强度 twofifths = two fifths half as big as 像一半那样大 twice as long as 像两倍那样长,Discuss in groups.,1.If your weight on the earth is 56 kilos, how much will you weigh on Mars?,2.If you can jump 1.76 meters high on the earth, how high can you do on Mars?,After reading

8、, we all know that a person who weighs 90 kilos on the earth weighs only 36 kilos on Mars. Now lets discuss the following questions.,36/90*56=22.4,90/36*1.76=4.4,dry v. 使干，弄干，擦干 adj. 干的，干燥的,dry,wet,短语：dry air 干燥空气 Keep dry ! 请勿受潮！ the dry season 旱季 a dry well 枯井 feel dry 口渴 dry ones eyes / tears 擦干眼

9、泪,1C Pair work,Discuss the following crazy questions with your partner and state your reasons. Does Mars have a good climate for plants ? Is Mars a useful place to dry fruit ? Is Mars a good place for human beings to live ? Is Mars a comfortable place for heavy people ?,Kangkangrenai-,The journey ha

10、s gone very well.,BernhardFashion BT,Hi Kangkang, It has been two days since we landed on Mars. It took us more than_ _ to get here. Generally, the journey went well, but the living _ were quite bad during the journey. We had to _ most of the food in the spaceship. Whats worse, our water supplies we

11、re very_ . We had to limit the use of water during those days. It is six weeks since we had a proper_ . Seven hundred and sixty-three dayswhat a long time! I often _ the family, but the excitement of being on Mars is worth it! Good Luck! Yours, Uncle Stephen,Listen to the tape and complete it.,two,y

12、ears,conditions,produce,shower,low,miss,（录音）,Read the e-mail again. Answer the following questions.,1.How many days had they stayed on Mars till then ? 2.How long did it take them to get to Mars ? 3.Were they living in a comfortable room ?,Two days.,Two years.,No.,Read again and mark True (T) or Fal

13、se(F).,( )1. Its been five days since they landed on Mars. ( )2. It took them three years to get to Mars. ( )3. They had plenty of food and water in the spaceship. ( )4. They have been away from the earth for 763 days. ( )5. The excitement and risks on Mars are worth it.,F,F,F,T,T,学习探究,1. Old John g

14、oes to sleep as easily as a baby does. 2. I have been learning English as long as 15 years. 3. It is not as (so) popular as other foods. 4. Line A is four times the length of line B. 5. He is more than three times as rich as I. =He is twice richer than I. 6. The population of this city is twice as l

15、arge as that of that city.,WORLD SPACE ACTIVITIES,Questions:,What country takes the first steps on the moon?,USA.,How many astronauts are there in Shenxhou ?,There are three.,When was Shenzhou was sent up into the space?,September 25th, 2008.,What is this chart about?,Its about world space activities.,Six countries are mentioned in this chart, arent there?,No. There are only three.,3 Written work,clothing food and drinks weather tran