约2180字。

　　Unit 9 When was it invented？
　　总课时：5        执笔人：       使用人：       时间：
　　备课时间第：第十二周        上课时间：第十三周
　　教学目标：
　　1. 学会谈论重要发明的历史及途径
　　2. 针对各项发明的用途及特点，发表自己的看法，并说明理由
　　3. 学习被动语态
　　4. 开阔学生的思路，培养学生的创造精神
　　5. 让学生展开丰富的想象，谈谈自己的感受
　　重点词：salty ,sweet ,sour ,pleasant ,potato chips ,slipper ,leaf ,fire ,scoop ,light bulb ,telescop ,
　　语言目标：When was the telephone invented ?
　　I think it was invented in 1876.
　　语言结构：被动语态的肯定句与疑问句
　　Unit 9  第1课时
　　Teaching aims
　　学习一般过去时的被动语态和特殊疑问句。
　　Teaching of new lesson
　　1. Warm-up
　　Ask the students to be familiar with the words below according to the pictures on computer.
　　Telephone, calculator, car, personal computer, TV, electric light, light bulb, alarm, clock, microwave oven, electric slipper.
　　2. Presentation  
　　1) 教学When was the car invented? It was invented in……
　　Choose the three inventions of these and asdents to guess when each one was invented.
　　For example, you might choose car, telephone, and personal computer.
　　Have several different students guess and write the dates on the board. Ask the class to repeat the questions and answers.
　　[T=Teacher, S=Student]
　　T: When was the car invented ? (Class repeat.)
　　T: Good. Now Jackie, what was your guess?
　　S1: 1900
　　T: OK. Jackie, repeat after me. The car was invented in 1900.
　　Repeat the process with several different inventions.
　　At last, madents find out the real dates.
　　2) 教学Who were the light bulbs invented by? And what are they used for ?
　　呈现Edison and light bulbs的画面。
　　Tell the students Edison invented light bulbs.
　　Then ask the students to answer the questions below.
　　T: Who were light bulbs invented by? ( Class repeat )
　　T: Good. Now Class repeat after me. They were invented by Edison.