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1、Unit 4 Amazing Science Topic 1 When was it invented ? Section D Whats it used for? Its used for listening to music. Whats it made of? Its made of plastic. Where was it invented? It was invented in Korea. When was it invented? It was invented in 1998. Whats it used for? Its used for communicating eas
2、ily. Whats it made of? Its made of plastic and metal. Where was it invented? It was invented in America. When was it invented? It was invented in 1973. What method did you use to find your lost cellphone? GPS is like a man-made star. We can use it at any time, in any place and in any weather to find
3、 out our position. The early explorers used the stars as landmarks to know where they were and in which direction they were going. This method worked well at night as long as the weather was good. But it didnt work so well during the rest of the time. Lets use the GPS. n.探险者,探险者, 勘探者勘探者 1. How did t
4、he early explorers know where they were? They found out where they were by using stars. 2. Whats the disadvantage of using the stars as guiding marks? Its disadvantage is that it didnt work well when the weather was bad and the stars could not be seen. 3. What is a GPS? Is it useful to use? It is li
5、ke a man-made star. We can use it at any time, in any place and in any weather to find out our position. It is very useful. 4. What do you think the GPS will be used for in the future? Read the passage and discuss the questions on Page88. Key words explore explorer, mark find out, indirection work w
6、ell, as long as the rest of the time solve, like, use, the shape of great invention n.标示,记标示,记 号,符号号,符号 v.做记号,做记号, 做标记做标记 Retell it ! 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 condition to find out our p_.
7、 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 Grammar Passive Voice () The radio was inven
8、ted by Guglielmo Marconi in 1895. When was the digital camera developed ? Where was it developed? What is a rocket used for? It was developed in the 1970s. It was developed in Japan. It is used for sending satellites or spaceships into space. Functions I wish I could go into space some day. I hope y
9、our dream will come true. Its said that he invented more than two thousand things during his life. Inventing is interesting and exciting and everyone can be an inventor. Passive voice was /were +done ( ) 1. A big supermarket _in our city last year. A. is built B. were built C. was built ( ) 2.Could
10、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 now. A. are taught B. were
11、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 exercise 1.You are late, all the tickets _(sell) out an hour ago. 2.This type of cellphone _(make )in Shenzhen. 3. I _ ( not invite) to
12、yesterdays party. 4. _ those machines _(check) this morning? 5. Many trees and flowers _(plant) in our school last year, and they made our school a beautiful garden. were sold were made were/was+v.的过去分词的过去分词 wasnt invited Were checked were planted 1.People use radios to learn English in the past. _
13、2.Jack will show me the photo. _ 3.They have raised much money for the Project Hope. _ 4.I often hear Mary sing English songs at home. _ 5.We mustnt throw litter about. _ 6.People can visit planets like Mars. _ Radios were used to learn English in the past. The photo will be shown to me. Much money
14、has been raised for the Project Hope. Mary is often heard to sing English songs at home. Litter mustnt be thrown about. Planets like Mars can be visited. Change the following sentences into Passive Voice. ( ) 1.Hurry up, you _ on the phone. A. WantedB. was wanted C. are wanted ( ) 2. Some stories _t
15、he children by the teacher everyday. A. is told forB. are told for C. are told to ( ) 3._that he has studied abroad for five years. A. It is saidB. 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 the teachers at schoo
16、l. A. take care of B. are taken care C. are taken care of C C A B C Choose the best answer. ( ) 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 servingB. is servedC. served ( ) 8. This kind of books _well. A. doesn
17、t sellB. isnt sellingC. arent sold. ( ) 9. I _ten minutes to decide which sentence was right by the teacher. A. gaveB. was givenC. was giving ( ) 10. Teachers _in every part of the world. A. are needingB. are neededC. will need A B A B B Project (1) This is Kangkangs invention. Look at the informati
18、on and the picture. What do you think of it ? Discuss with your partners. Name: Plar (plan-car) Inventor: Kangkang Year: 2014 Use: Both flying and driving 2. Design your own invention. Draw a picture of it and write down the information about it. Name :_ Inventor:_ Year:_ Use:_ Project (2) Describing Your Invention 3. Show the picture of your invention and describe it to the class. 4. Discuss in groups to decide which is the most useful /interesting/funny inven
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