约2060字。

　　仁爱版九年级上Unit 4
　　Topic 2  When was it invented?
　　Section A
　　The main activities are 1a and 2a. 本课重点活动是1a和2a。
　　Ⅰ. Teaching aims and demands 教学目标
　　1. Learn some new words:
　　metal, toothbrush, ink, recorder
　　2. Learn some useful sentences:
　　—What’s it made of/from?
　　—It’s made of/from…
　　3. Learn the simple past passive voice:
　　(1)—When was it developed?
　　—Around 1998.
　　(2)—Where was it developed?
　　—It was developed in Korea.
　　4. Learn how to express hopes and wishes:
　　(1) I wish I could go into space some day.
　　(2) I hope your dream will come true.
　　5. Talt new technology and inventions.
　　Ⅱ. Teaching aids 教具
　　火箭模型/牙刷/墨水/纸/录音机/小黑板/MP3/各种发明的图片/魔盒
　　Ⅲ. Five-finger Teaching Plan
　　Step 1  Review
　　师生对话，让学生尽量用被动语态叙述计算机的作用，引出生词rocket并导入新课。
　　T: Boys and girls, we’ve learned about the importance of computers. Can you tell me something about them?
　　S1: Computers are used by doctors to find diseases easily.
　　S2: Robots are controlled by computers to do dangerous work.
　　S3: In business, computers are used to place and cancel orders.
　　S4: Spaceships are mainly controlled by computers.
　　T: Well done! But do you know how the spaceships are sent up from the ground into the space?
　　S4: They are sent up by rockets. (帮助学生回答。)
　　(出示火箭模型，板书并帮助学生理解rocket。)
　　rocket
　　T: Look! This is a model rocket. What’s it made of? What’s it used for? Let’s come to 1a and talt it.
　　Step 2  Presentation
　　用具体实物设置情景，师生对话，学习生词和新句型。找出关键词句和目标语言，为交际积累材料。
　　1. (师生对话，用实物引出生词，学习新句型。)