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约2230字。

　　仁爱版九年级上Unit 4
　　Topic 2  When was it invented?
　　Section D
　　The main activities are 1a and 3. 本课重点活动是1a和3。
　　Ⅰ. Teaching aims and demands 教学目标
　　1. Learn a new phrase:
　　run away
　　2. Learn some useful sentences:
　　(1) This method worked well at night as long as the weather was good and the stars could be seen.
　　(2) To his surprise, he was caught by the police.
　　3. Review the simple past passive voice.
　　4. Talt new technology GPS.
　　Ⅱ. Teaching aids 教具
　　实物或图片/多媒体课件/录音机
　　Ⅲ. Five-finger Teaching Plan
　　Step 1  Review
　　教师出示图片，创设情景，复习一般过去时被动语态的用法。激发学生的兴趣，培养学生的口语表达能力，为导入新课作准备。
　　(利用实物或图片，以师生问答形式复习一般过去时的被动语态及重要词组和句型。)
　　T:  How are you, boys and girls?
　　Ss: Fine, than. And you?
　　T:  I’m very well. So far, we have learned something about the new technology and inventions in the world. Do you remember them all?
　　Ss: Yes, we have learned the light bulb, the car, the cellphone, TV set, the digital camera, the MP3 player …
　　(出示MP3的图片。)
　　T: Very clever. Please look at the picture. What’s this in English?
　　S1: It is an MP3.
　　T: What’s it used for?
　　S2: It’s used for listening to music.
　　T: What’s it made of?
　　S3: It’s made of plastic.
　　T: Where was it invented?
　　S4: It was invented in Korea.
　　T: When was it invented?
　　S5: It was invented in 1998.
　　T: OK, very good.
　　(出示手机的图片。)
　　T: When was the cellphone invented?
　　S6: It was invented in 1973.
　　T: Where was it invented?