九年级英语上册 Unit 4 Amazing Science Topic 1 When was it invented Section D 仁爱版

1、Key sentences in SC,1. 发明有多种产生方式。 2. 大多数时候，发明的产生源于有人努力地想解决一个难题。 3. 有的时候，发明源于偶然。 4. 但是，他们并没有因此而失去信心。 5. 在发明的过程中，仔细的计划是很重要的,Key sentences in SC,发明有多种产生方式。 Inventions e about in many ways. 2. 大多数时候，发明的产生源于有人努力地想解决一个难题。 Most of the time, inventions happen because someone works to solve a problem. 3. 有的时

2、候，发明源于偶然。 Sometimes inventions are the result of accidents. 4. 但是，他们并没有因此而失去信心。 But they werent discouraged by what people said. 5. 在发明的过程中，仔细的计划是很重要的。 Careful planning is important in the invention process,的结果,Unit 4 Amazing Science Topic 1 When was it invented ,Section D,Whats it used for? Its use

3、d 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 municating easily. Whats it made of? Its made of plastic and metal. Where was it invented? It was invented i

4、n 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 out our position. The early explorers used the stars as landmarks to know where they were and i

5、n 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， 勘探者,1. How did the early explorers know where they were? They found out where they were by using stars. 2. Whats the disa

6、dvantage 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 like a man-made star. We can use it at any time, in any place and in any weather to find out our position.

7、It is very useful.,Read the passage and discuss the questions on Page88,Key words,explore explorer, mark find out, indirection work well, as long as the rest of the time solve, like, use, the shape of great invention,n.标示，记号，符号 v.做记号，做标记,Retell it,Key sentences in SD,1. 通过星辰，他们可以判断自己身处何方，以及他们去往的方向。

8、2. 只要天气好，在能看见星星的晚上，这种方法就很有用。 3. 我们可以在任何时间、任何地点、任何天气使用它找到我们所在的位置。 4. 它还可以别用来研究我们地球的形状。 5. 但在其余的时间这种方法就不适用了,Key sentences in SD,1. 通过星辰，他们可以判断自己身处何方，以及他们去往的方向。 Using the stars, they could find out where they were and in which direction they were going. 2. 只要天气好，在能看见星星的晚上，这种方法就很有用。 This method worked w

9、ell at night as long as the weather was good and the stars could be seen. 3. 我们可以在任何时间、任何地点、任何天气使用它找到我们所在的位置。 We can use it at any time, in any place and in any weather to find out our position. 4. 它还可以别用来研究我们地球的形状。 It can also be used to study the shape of the earth. 5. 但在其余的时间这种方法就不适用了。 But it did

10、nt work so well during the rest of the time,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_. In the past, the early explorers had to use stars in the s_ to tell them where they were,

11、 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,Exercises,Grammar,Passive Voice (,The radio was invented by Guglielmo Marconi in 1895,When was the digital camera developed ? Where was

12、 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,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 yo

13、u 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 ta

14、ught 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 ye

15、sterdays 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,wasnt invited,Were,checked,were planted,1.People use radios to learn English in the past. _ 2.Jack w

16、ill 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 has been r

17、aised 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 _the children by th

18、e 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 school. A. take care o

19、f 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. doesnt sellB. isnt sellin

20、gC. 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,Practice makes perfect,Project (1,This is Kangkangs invention. Look at the information and the picture. What do you think of it ? Discuss with your partners,2. Design your own invention. Draw a pi