九年级英语上册Unit4AmazingScienceTopic1WhenwasitinventedSectionD课件（新版）仁爱版

1、Section DMany people use computers.Computers _ _ by _ _.The workers plant trees in the garden.Trees _ _ in the garden _ the workers.are usedmany peopleare plantedbyCan you try ？ 7.灯泡 8.机器人 9.发明 10.位置；方位 11.问题 12.解决review the grammar( page 87) 找一找这四组句子的共同点是什么呢？were/was+v.的过去分词的过去分词A: Whats the lock m

2、ade of? B: Its made of metal. A: Whats it used for? B: Its used for locking the door. n.锁锁 v.（用锁）（用锁）锁上，被锁住锁上，被锁住2 Follow the example to make up similar conversations. lock/metalWhats it used for?Its used for communicating easily.How will you find your lost cellphone? GPS is like a man-made star. We

3、 can use it at any time, in any place and in any weather to find out our position. Do you know how the early explorers find their position ?Lets use the GPS.n.探险者，探险者， 勘探者勘探者Teaching aims:1.复习并熟记本话题的重点单词和短语。2.复习本话题刚学过的被动语态，并根据刚学过的内容总结含有情态动词的被动语态。3.通过本课的科普文章Where are we?的阅读，训练同学们从细节入手，培养良好的阅读习惯。 1. H

4、ow did the 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?

5、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. It is very useful. 4. What do you think the GPS will be used for in the future? Read the passage and answer the questions on Page88.找一找，记一记找一找，记一记 1.查明；找出 2.奏效，起作用 3.其它/于时间 4.人造的 5.在任何时候

6、6.只要 7.可以被使用find outwork wellThe rest of the timeman-made at any time as long as can be used find out the sentences with passive voice(被动语态）考点点拨；1.The stars could be seen. 2.It can be used to study the shape of the earth. 仔细观察，两个句子的构成；情态动词的被动语态构成：情态动词的被动语态构成：情态动词情态动词+be+动词的过去分词动词的过去分词Open your mouth

7、 ,you will succeed!Listen and read after the tape.根据首字母提示，完成短文。 Thanks to GPS, we can 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, h

8、owever, 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.hereositionsedkyxplore( ) 1. A big supermarket _in our city last year. A. is built B. were built C. was built ( ) 2.Could you tell me who the radio _ by? A. invents

9、 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 taught C. were taught to( ) 5.It is said tha

10、t potato chips _by mistake about one hundred years ago. A. were invented B. invented C. are inventedCBCACGrammar exercise( ) 1.Hurry up, you _ on the phone. A. WantedB. was wanted C. are wanted( ) 2. Some stories _the children by the teacher everyday. A. is told forB. are told for C. are told to( )

11、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 of B. are taken care C. are taken care of C CABCChoose the best answer.

12、 ( ) 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 sellingC. arent sold.( ) 9. I _ten minutes to decide which sentence was right b

13、y the teacher. A. gaveB. was givenC. was giving ( ) 10. Teachers _in every part of the world. A. are needing B. are neededC. will needABABBWe Learn: 1. Some words : mark, explorer 2. Some phrases: find out, as long as, work well, the rest of the time, be used to, the shape of 3. Some sentences: This

14、 method worked well at night as long as the weather was good and the stars could be seen.We can: 1. Use the passive voice of the simple past tense more properly. 2.Talk about new technology GPS. 3. Develope our imagination and creativity by designing our own inventions.1.You are late, all the tickets _(sell) out an hour ago.2.This type of cellphone _(make )in Shenzhen.3. I _ ( not invit