人教版英语九年级《When was it invented》全单元学案.pdf

【课 题】 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】 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: _____________________. ① The telephone was invented in 1876. ② The 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 Edison Thomas 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 electric power would be shut off in homes, streets, and factories. Perhaps this suggestion made Americans realize fully what Edison an his inventions meant to them. Electric power was too important to the country. Shutting it off for even a short time woul have led to complete confusion. A blackout was out of the question. On the day of Edison’s funeral, many people silently dimme 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 coun