第一课时课件 (7).ppt
Unit 4 Amazing Science Topic 1 When was it invented ?Section A is spoken byShe speaks Chinese. is spoken by He speaks English.EnglishEnglish.Hehim.ChineseChinese.Sheher. 被动语态被动语态(Passive Voice ) be + done 主动语态：主动语态： 主语主语 + + 动词动词 + + 宾语宾语被动语态：被动语态： 主语主语 + + be + be + 过去分词过去分词 + + by + by + 宾语宾语Many people use computers.Computers _ _ by _ _.The workers plant trees in the garden.Trees _ _ in the garden _ the workers.are usedmany peopleare plantedbyCan you try ？Exercise 1. Trees _ (water) in our school every three days. 2. The zoo _ (visit) by lots of children on weekends. 3. A Journey to West _ (show) on CCTV every summer. 4.On Christmas Day, children wake up early and cant wait _ (open) the boxes of presents. 5. Well have a chance _ (see) the flower show this weekend. to openis shownare wateredto seeis visitedA: Whats the lock made 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/metalA: Whats the paper made from?B: Its made from wood.A: Whats it used for? B: Its used for writing on.paper/woodcomputer desk /woodchopsticks/bamboosweater /cottonwatch/metalbe made of 由某种物质做成由某种物质做成(看得出原看得出原材料，物理过程材料，物理过程)be made from 由某种物质制成由某种物质制成(看不看不出原材料，化学过程出原材料，化学过程)be made up of 由几部分组成由几部分组成be made in 在某地在某地/某时制造某时制造be made by 由某人制造由某人制造be made into 被制成被制成12A. Whats it made of?B. Its made of metal.A. Do you know what it is used for?B. Its used for sending satellites or spaceships into space.Wow !A model rocket ! 1a Listen, look and say.Why is Jane unhappy?Because Jane was not allowed to play computer games last night. allow v. 允许允许1. allow sb. to do sth. 允许某人做某事2. allow doing sth. 允许做某事3. be allowed to do sth. 被允许做某事聚焦一般过去时的被动语态聚焦一般过去时的被动语态结构:助动词(was/were)+及物动词的过去分词1.肯定句式 ：主语+was /were+v.-ed2.否定句式 ：主语+was/were + not+v.-ed3.一般疑问句式： Was /Were+主语+vt.-ed4.特殊疑问句式：疑问词W/H+was/were+主语+v.-edE.g. An e-mail was sent to her friend by Jane yesterday. An e-mail wasnt sent to her friend by Jane yesterday. Was an e-mail sent to her friend by Jane yesterday? Who was the e-mail sent to by Jane yesterday?Lets sum up together.1b Listen to 1a and mark T (True) or F (False).1. Jane is unhappy because she was not allowed to go to a party last night.( )2. Kangkangs father made a model rocket for him. ( )3. The rocket is made of metal. ( )4. A rocket is used for sending satellites or spaceships into space. ( )FFTT1a Listen , look and say 1c Read 1a and answer the following questions. 1. Why did Kankang ask Jane not to spend too much time on computer games ? Its bad for her health if she spends too much time on them.too tiredheadachesore eyes2. Whats a rocket used for? Its used for sending satellites or spaceships into space . be used for 被用来做被用来做be used to do 被用来做被用来做be used as 被用作被用作used to do sth. 过去常做过去常做be used to doing sth. 习惯于做习惯于做3. Who taught Kangkang some knowledge about spaceships? Mr. Brown. 4. Whats Kangkangs dream? He wishes he could go into space some day. some day-某一天某一天，总有一天总有一天(将来将来)e.g. I wish I could have my own house some day.I hope his dream will come true . come true-变成真的变成真的,实现实现realize/achieve-make sth. come true3a A. Listen to the conversations and number the following pictures.2313a B. Listen again and complete the table . InventionItemlaptopcell phonedigital cameraMaterialUsageYearcountryplasticplasticmetal and plasticstudy, work and play communicatetake photosaround 19851973around 1975JapanAmericaAmerica3b Work in pairs. Ask and answer questions based on the table in 3a with passive voice. A: What is a laptop made of?B: It is made of plastic. A: Whats it used for?B: It is used for studying. A: When and where was it developed?B: It was developed in Japan in 1985.Example:Focus on the meaning in communication. Dont be afraid of making mistakes. Change the following sentences.1.My mother allows me to use her cellphone.(改为被动语改为被动语态态)I _ _ _ use my mothers cellphone.2.A rocket is used for launching satellites and spaceships. (就画线部分提问就画线部分提问) _ _ a rocket _ _?3.The digital camera was invented in 1975. (就划线部分就划线部分提问提问)_ _ the digital camera _ ?4. Maybe he is an inventor. (改为同义句改为同义句) He _ _ an inventor.am allowed to What isused forWhen was inventedmay be SummaryWe learn: 1.Some words: lock, rocket, metal, satellite, spaceship 2. Some phrases: be made of, be used of, some day, come true 3. Some sentences: (1) I wish I could go into space some day. (2) I hope your dream will come true. (3) -What is a rocket used for? -Its used for sending satellites or spaceships into space. We can: Use the passive voice. Read 1a. Memorize the useful expressions and key sentences that we learn today. Finish Section A in your workbook. Preview Section B.
