Unit 6 When was it invented ?Section A 1a—1c【学习目标】句型：When was the car invented?弄清一般过去时态的主动语态与被动语态的差异，并通过练习和运用加以巩固。
【学习重点难点】句型：When was the car invented?弄清一般过去时态的主动语态与被动语态的差异，并通过练习和运用加以巩固。
【学法指导】在学习中，懂得人类的科学发明创造了丰富的物质文明，激发创造发明的能力和愿望。
并乐于参加学习小组活动，积极合作。
【教学过程】【教学过程】一、导入（启发探究3分钟）通过课件呈现中国古代的发明:gun powder/compass/paper making/printing然后问学生:What are they?Help the students to say :They are four inventions of China.Get the students to repeat.叫学生列举一些他们知道的发明,如car,telephone,computer,TV等。
Then show some inventions on the screen to the students:Telephone, calculator, car, personal computer, TV, light bulb, alarm, clock, microwave oven, electric slipper.Teacher: There are many useful things in the world. They help us a lot in life. (Show some pictures on the screen)When were they invented?Students: _____________________.①The telephone was invented in 1876.②The computer was invented in ...……二、自学（自主探究6分钟）文化背景导读How Americans showed their respect for EdisonThomas Alva Edison was awarded more patents on inventions than any other American. When he died in 1931, Americans wondered how they could best show their respect for him.One suggestion was that the nation observe a minute or two of total blackout. All electricpower would be shut off in homes, streets, and factories.Perhaps this suggestion made Americans realize fully what Edison and his inventions meant to them. Electric power was too important to the country. Shutting it off for even a short time would have led to complete confusion. A blackout was out of the question.On the day of Edison’s funeral, many people s ilently dimmed their lights. In this way they honored the man who had done more than anyone else to put a great force of electricity at his countrymen’s fingertips.翻译下列年代：1 nineteen seventy- one____________2 eighteen eighty-five__________3. eighteen seventy-six4.1927_______________ __5.1976______________________6. 2010____________________三、交流（合作探究10分钟）1. 要求学生翻开课本P41，迅速阅读1a部分的内容。
并按要求完成课本上相应的任务: Number the pictures.（1分钟）2. 检查答案，先要求全班一起给出答案并检查讨论。
3. 要求学生听第一遍录音，并完成课本上1b的听力任务: Listen and match the inventions with the years. Check their answers: 读出序号-读出年份-读出完整的句子（2分钟）4.听第二遍，填空。
Alice: Was your life very difficult when you were a kid?Grandma: Oh, not really. Why?Alice: Well, you didn’t have modern i nventions like a , right?Grandma: Of course we did! How old do you think I am? The telephone was in 1876. You need to take a history class, Alice!Alice: Haha! How about ? They weren’t invented yet, were they?Grandma: Yes, they were. Cars were invented in 1885. My family had a car.Alice: Well, did you have a TV?Grandma: No, we couldn’t one. They were expensive in those days. The TV was invented around 1927, I think.Alice: Well, I know that you didn’t have a because we learned in school that personal computers were invented in 1976.Grandma: You’re right. But I have now!5. 要求学生听第三遍录音，并逐句进行跟读。
（2分钟）6. 完成教材1c的任务，要求学生模仿1a内容，进行对话练习。
并邀请2-3对同学当堂进行演示。
（3分钟）6. 小结训练。
要求学生在规定的时间内完成一个小练习。
并请若干学生给出自己的答案。
有错误的话及时解决纠正。
（2分钟）用所给单词的正确形式填空：1) When was the telephone invented (invent)?2) The computer can help us do math problems (help).3) In those day, the woman couldn't afford (afford)a TV because they were really expensive.4) A friend of mine (I) came to see me last week.5) I think you need to take (take) a history class.四、总结（引深探究15分钟）1.invent (v.)发明；创造invent 指发明创造出自然界本来不存在的东西，如工具、方法、手段、汽车、电器、合成材料等。
【备课例句】Bell invented the telephone. 贝尔发明了电话。
Smith invented a new teaching method. 史密斯发明了一种新的教学方法。
【横向辐射】discover, find, create1.discover是“发现”的意思，是指发现原来就有而一直没被发现，如发现电、煤、石油等矿藏及新星、星系或科学真理等。
Columbus discovered America in 1492.1492年哥伦布发现了新大陆。
Recently they have discovered a comet. 最近他们发现了一颗彗星。
2.find的意思是“寻找”，强调找的结果，并不指发现。
I've tried to find another copy but couldn't find one. 我试图再找一本，但没能弄到。
3.create指有目的地把原材料制成新产品，也指创造出原来不存在的或与众不同的事物。
Man creates himself. 人类创造了自己。
A novelist creates characters and a plot. 小说家塑造人物并设计情节。
【课堂变式】根据语境提示，用invent, discover，find或create的形式填空，完成句子。
1.When _____ the stream engine（蒸汽机）___?2.I can’t ____ my bike, I’m looking for it.3. Scientists are now trying to ___ if this is possible.4. Do you know who______ the plane？5. He ____quite a number of wonderful characters in his play.【解析】I.1.was, invented 2.find 3.discover 4.invented 5. created五、练评（包含“考点链接”应用探究6分钟）一）单项选择（）1.The kind of cup is used__________drinking.A.toB.asC.byD.for（）2.My mother and my sister kept on talking,but my father________silent all the time.A.gotB.keptC.turnedD.looked（）3.I think the short story_________by Lu Xun.A.is writingB.is writtenC.writtenD.was written（）4.--Who________the electric light lamp______? —Edison.A.was;inventedB.is;inventedC.was;invented byD.did;invented by二）阅读短文，完成任务Google and Toyota have worked together to create a new smart car. It can run on the road without a driver. It drives itself. The self-driving car hasn’t been on sale to the public, so we don’t know how much it costs. Another t hing most people want to know is whether it will be safe enough to run on the road.The self-driving car uses electricity as its power, and it can’t drive very quickly—the top speed would be 25 miles per hour. It is actually controlled by a computer system (系统) on the car. The system keeps on collecting information by some video cameras inside the car and a LIDAR sensor (激光雷达传感器) on top of it. A computer processes the information and decides what to do. “The self-driving car has only buttons (按钮) for go and stop, so it’s very easy to use,” an engineer of Google says. “And what’s more, it will make car accidents less and make the world a safer place.” The self-driving car has driven hundreds of thousands of miles in California, and it has only gotten into two accidents by human mistake.According to CNN, self-driving cars will also help to reduce (减少) the number of cars in big cities. “Self-driving cars would be able to send you to the workplace and then pick up another person instead of stopping in a parki ng lot.”( )1. We don’t know the price of the self-driving car because .A. it is on sale only in AmericaB. it isn’t made for saleC. people can get it for freeD. it hasn’t been on sale to the public( )2. The self-driving car can collect information using .①video cameras ②a computer③a LIDAR sensor ④a computer systemA. ①②B. ①③C. ①②③D. ①②③④( )3. According to CNN, self-driving cars will .A. send us more quickly to the workplaceB. lead to heavier trafficC. improve traffic condition in big citiesD. carry more people than a normal car。