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1、Unit 4 Amazing Science Topic 1 When was it invented?,Section B,学习目标,1.掌握本课的重点词汇和短语， 初步学习一般过去时的被动语态。 能够在听、说、读、写中 正确运用一般过去时的被动语态。 3. 要勤思考、 有理想、争做未来的发明家。 4. 了解其他国家的科技发明。,II. Fill in the blanks with the right preposition. 1.The desk is made _ wood. 2.The red wine is made _ grapes. 3.This delicious cake
2、was made _my mother. 4.Glasses are made _ glass. 5.Our group is made up _ four students. 6.That kind of machine is made _Japan.,of,from,of,of,by,in,Review,invent /America/in 1946,A: Where were computers invented? B: They were invented in America. A: When were computers invented? B: They were invente
3、d in 1946.,Look and talk about the picture.,MP3 player 1998 Korea listen to music,mobile phone 1973 America communicate easily,Please choose one to talk about.,digital camera 1975 America take photos,A:Whats this ? B:Its A:When was it invented ? B: It was invented in A: Who invented it ? B:,1b Liste
4、n to 1a and choose the correct answers.,( ) 1. Where are Michael and Jane? A. In the science museum. B. At the school library. C. In the zoo. D. In the park. ( ) 2. Which object is not mentioned in the conversation ? A. Light bulb. B. Airplane. C. Television. D. Radio.,A,C,1a Look, listen and say.,W
5、hen was it invented? Who invented it?,Look, a light bulb!,In 1897, Thomas Edison.,In 1895 in 1903 in 1879,Can you match them?,1c Read 1a and complete the table.,radio,airplane,Thomas Edison,Wilbur and Orville Wright,1879,1895,A: What are these ? B: A: When were they produced first ? B: A: What were
6、they made of ? B:,Do you know?,2 Fill in the blanks with the proper forms of the given words.,The first jeans were produced in 1855. At that time, they _(not call ) jeans and they were just hard-wearing pants designed for workers. The pants _ (make ) of the brown cloth. This kind of cloth _ usually
7、_(use) for making tents. Nowadays, their materials have been changed so that it feels more comfortable. And many different jeans styles _ also _(create). They _( design) not only for workers but also for teenagers and women. Later jeans are popular all over the world.,were not called,were made,was,u
8、sed,are,created,are designed,A. Karl Benz,C. Alexander Graham Bell,B. John Baird,Invention,Inventor,Year,a.1926,b.1876,c.1885,3 Listen to the three passages. Match the pictures with the following information.,4a Read the following words. Listen and check the vowels.,rocket cotton hospital model sate
9、llite camera laptop plastic,4b Listen and read the following sentences aloud, paying attention to the stress and intonation. Then use the words in 4a to make up similar conversations.,A: When was the digital camera developed? B: It was developed in the 1970s. A: Is the digital camera developed in Ko
10、rea? B: No. A: Where was it developed? B: It was developed in Japan.,We learn: 1.Some words: bulb, airplane, hard-wearing, Korea 2. Some phrases: be used by, more than, be different from 3. Some sentences: Its said that he invented more than two thousand things during his life. We can: 1.Use the simple past passive voice: Do you know when it was invented? It was invented in 1879. 2.Talk about the inventors of some great inventions.,小结,Read 1a. Memorize the useful expressions and key sentences that we learn today. Finish Section B in your workbook. Preview Section C.,作业,