Unit 4 Topic 1 Section A_401431.pptVIP

Unit 4 Amazing Science Topic 1 When was it invented ? Section A is spoken by She speaks Chinese. is spoken by He speaks English. English English. He him. Chinese Chinese. She her. 被动语态(Passive Voice ) be + done 主动语态： 主语 + 动词 + 宾语 被动语态： 主语 + be + 过去分词 + by + 宾语 Many people use computers. Computers _____ ________ by _______ _________. The workers plant trees in the garden. Trees _____ _______ in the garden ____ the workers. are used many people are planted by Can 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 can’t wait ______ (open) the boxes of presents. 5. We’ll have a chance _____ (see) the flower show this weekend. to open is shown are watered to see is visited A: What’s the lock made of? B: It’s made of metal. A: What’s it used for? B: It’s used for locking the door. n.锁 v.（用锁）锁上，被锁住 2 Follow the example to make up similar conversations. lock/metal A: What’s the paper made from? B: It’s made from wood. A: What’s it used for? B: It’s used for writing on. paper/wood computer desk /wood chopsticks/bamboo sweater /cotton watch/metal be made of 由某种物质做成(看得出原材料，物理过程) be made from 由某种物质制成(看不出原材料，化学过程) be made up of 由几部分组成 be made in 在某地/某时制造 be made by 由某人制造 be made into 被制成 1 2 A. What’s it made of? B. It’s made of metal. A. Do you know what it is used for? B. It’s 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 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 结构:助动词(w