仁爱英语九上PPT课件Unit 4Topic 1 When was it inventedD.ppt

1、,Unit 4 Amazing Science,Topic 2 When was it invented?,Section D,Have you ever got lost somewhere? What method did you use to find your direction?,Where are we?,Read and discuss the following questions. 1. What would you do if you lose your way in a forest? 2. How did the early explorers know where t

2、hey were? 3. What is GPS? Is it useful to us? 4. What do you think GPS will be used for in the future?,What is GPS? GPS即全球定位系统(Global Positioning System)，简单地说，这是一个由覆盖全球的24颗卫星组成的卫星系统。这个系统可以保证在任意时刻，地球上任意一点都可以同时观测到4颗卫星，该观测点可以通过接收到的信号 计算出经纬度和高度，以便实现导航、 定位、授时等功能。这项技术可以用 来引导飞机、船舶、车辆以及个人， 安全、准确地沿着选定的路线，准时

3、到达目的地。,疑难讲解 1.in direction 按/朝方向 e.g. A motor bike hit a truck in the opposite direction. 2. work well 奏效；起作用 e.g. The medicine worked well. 3. as long as 只要；长达 e.g. You can go out to play as long as you finish your homework. e.g.I have taught English as long as nine years.,Read and answer the quest

4、ion. A thief stole a beautiful cellphone from a young girl. He ran away very quickly and then hid in a secret place. To his surprise, when he was using the cellphone, he was caught by the police. Do you know why,Bluetooth Bluetooth is a short distance wireless communication technology. It provides c

5、overage (覆盖） of up to 100 meters. Its a low power technology that can be used to connect cellphones or computer with other devices.,A bluetooth headset,长长见识,根据首字母提示，完成短文。 Thanks to GPS, we can exactly know w _we are now. GPS is like a man-made “star”. It can be u_ in any place and any weather condit

6、ion to find out our p_. In the past, the early explorers had to use stars in the s_ to tell them where they were, however, this method didnt work well when the weather was bad. So GPS is a great invention that can help humans to better e_ our planets.,here,osition,sed,ky,xplore,当堂检测,What have you le

7、arnt about in this topic? Can you say something about one of them? 1.Rocket 2.Cloning 3.Robots 4.GPS 5.Other great inventions,1.它是由什么制成的？ Whats it made of/from? 2.我希望有一天我也能飞到太空。 I wish I could go into space some day. 3.我希望你的梦想能实现。 I hope your dream will come true. 4.众所周知，大多数生物体内都有DNA，包括人。 As we know

8、, there is DNA in most living things, including human beings. 5.没有人确切地知道，但是大多数人认为机器人会成为我们生活的一部分。 No one knows for certain, but most people think robots will be part of our lives. 6.总而言之，这个机器人对我们很有帮助。 In short, this robot is very useful to us.,看谁能根据中文意思快速翻译六个句子。,口语比拼,2a,Grammar focus,Passive voice ()

9、,The radio was invented by Guglielmo Marconi in 1895.,When was it developed ? Where was it developed ? Where were laptops invented ?,Around 1998. It was developed in Korea. They were invented in Japan.,2b,Useful expressions,Whats it made of/from? Its made of/from . I wish I could go into space some

10、day. I hope your dream will come true. There is DNA in most living things, including human beings. No one knows for certain, but most people think that robots will be part of our lives.,Passive voice 被动语态 was /were +done 考点探究 ( ) 1. A big supermarket _in our city last year. A. is built B. were built

11、 C. was built ( ) 2.Could you tell me who the radio _ by? A. invents B. invented C. was invented ( ) 3. Many trees and flowers _ in our school last year. They made our school more beautiful. A. have planted B. were planted C. planted ( ) 4.The children _ swim last month and they can swim very well n

12、ow. A. are taught B. were taught C. were taught to ( ) 5.It is said that potato chips _by mistake about one hundred years ago. A. were invented B. invented C. are invented,C,B,C,A,C,Grammar focus,被动语态综合练习 一、用所给词的适当形式填空。 1.You are late, all the tickets _(sell) out an hour ago. 2.This type of cellphon

13、e _(make )in Shenzhen. 3.The story _(happen) in a magic land. 4. Her homework _(finish) yet, so she is still working on it now. 5.When _ the sports meeting _(hold)? 6.Look, a new road _(build) in that area. 7.The dirty clothes must _(wash) at once. 8.The roses _(smell) sweet. 9.It is well _(know) th

14、at the Great Wall is the symbol of China.,were sold,were made,happened,hasnt been finished,will be held,is being built,be washed,smell,known,be的某一时态形式 + v.的过去分词,二，将下列句子改为被动语态。 1.People use radios to learn English in the past. _ 2.Jack will show me the photo. _ 3.They have raised much money for the P

15、roject Hope. _ 4.I often hear Mary sing English songs at home. _ 5.We mustnt throw litter about. _ 6.A policeman is running after a thief in the street. _ 7.People can visit planets like Mars. _,Radios were used to learn English in the past.,The photo will be shown to me. /I will be shown the photo

16、by Jack.,Much money has been raised for the Project Hope.,Mary is often heard to sing English songs at home.,Litter mustnt be thrown about.,A thief is being ran after in the street.,Planets like Mars can be visited.,三，单项选择。 ( ) 1.Hurry up, you _ on the phone. A. Wanted B. was wanted C. are wanted (

17、) 2. Some stories _the children by the teacher everyday. A. is told for B. are told for C. are told to ( ) 3._that he has studied abroad for five years. A. It is said B. It says C. That is said ( ) 4.The window _ five minutes ago. A. is cleaned B. was cleaned C. can be cleaned ( ) 5.The children _by

18、 the teachers at school. A. take care of B. are taken care C. are taken care of,C,C,A,B,C,( ) 6. I have no idea what _while I was asleep. A. happened B. was happened C. happens ( ) 7. In some countries, tea _before meals. A. is serving B. is served C. served ( ) 8. This kind of books _well. A. doesn

19、t sell B. isnt selling C. arent sold. ( ) 9. I _ten minutes to decide which sentence was right by the teacher. A. gave B. was given C. was giving ( ) 10. Teachers _in every part of the world. A. are needing B. are needed C. will need,A,B,A,B,B,Practice makes perfect.,一、词汇：A, 根据所给英汉提示写出单词。 1.What are

20、 these _(牙刷）made of? 2.A team from UK were the first to _(克隆）an animal successfully. 3.The light bulb is one of Edisons _(发明). 4.Would robots like to be human beings _(佣人) if they can think for themselves? 5.We will go _(只要）the weather is good.,话题检测,toothbrushes,clone,inventions,servants,as long as,

21、B，根据首字母提示补全单词。 6.Class Three are doing e_ in the lab. 7.O_ scientists find life on Mars, we will have a new living homeland. 8.He w_us not to go out after it was dark, for the road covered with snow was dangerous. 9.We should make a c_ to protecting the wild animals. 10.After school, students should

22、 help their parents do some h_.,xperiments,nce,arned,ontribution,ousework,二、根据汉语提示完成句子。 1.It is bad for your health to eat _(太多). 2.Our country has _Change I _(发射) space successfully. 3._(据说）that Jesus Christ was born in a barn. 4._（到目前为止)，we have finished a lot of jobs. 5.Jims pen _(相似) mine. 6.We

23、should have the good habit of_ (独立思考). 7._(总而言之), he is a great astronaut. 8.I believe our hope will _(变成现实).,too much,sent into,It is said,So far,is similar to,thinking for ourselves,In short,come true,三、 情景对话，选择正确的应答语。 A: Hi, Juanjuan, What are you doing? B: I am watching TV. A:_B: Sorry ,I dont k

24、now._ A: Thats because of man-made satellites. B:_ A: They can send and receive messages. With their help, China can send its TV and radio programs to the other side of the world._ we can also use satellites to help make telephone calls to foreign countries. B:_ We must study hard to master the tech

25、nology.,a. Foreign countries can send their programs to China. b. Can they send and receive messages? c. How useful they are! d. Why? e. Do you know why we can watch TV programs from foreign countries? f. What can they do?,e,d,f,a,c,四、用所给词的适当形式填空。,Look at this, it looks _ a pen, but its not a _pen.

26、Its a talking pen. Its used for _us improve our spoken English. It was _by the Beijing Renai Education Institute in 2007.Would you like to buy_?,like,common,helping,developed,one,Written work,Look at Kangkangs invention and the information. Discuss in groups and design your own invention. Then draw a picture of it.,Your own invention,Information,picture,