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1、九年级 Unit4Topic 2 When was it invented?Section AThe main activities are 1a and 2a. 本课重点活动是 1a 和 2a。. Teaching aims and demands 教学目标1. Learn some new words:metal, toothbrush, ink, recorder2. Learn some useful sentences:Whats it made of/from? Its made of/fromWhats it used for?Its used for 3. Learn the
2、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. Talk about new technologies and inventions. . Teaching aids 教
3、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. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间 :6 分钟)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, weve learned about the importance of computers. Can you tell me something about them in passive voice?S1: Computers are used by doctors to
4、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 space?S4: They are sent
5、up by rockets. (帮助学生回答。)(出示火箭模型的图片，板书并帮助学生理解 rocket。)rocketT: Look! This is a model rocket. Whats it made of? Whats it used for? Lets come to 1a and talk about it.Step 2 Presentation 第二步 呈现(时间:13 分钟)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。)T:(让学生摸一摸火箭模型) Whats it made of?S
6、1: Its made of “金属”.T:Yes, its made of metal.(板书句型及生词，并让学生掌握。)metalWhats it made of?Its made of metal.T:Do you know what a rocket is used for?Ss: Its used for sending spaceships into space.T:Yes, its used for sending spaceships or satellites into space.(板书句型并要求学生掌握，帮助学生理解 satellite。)satelliteWhat is
7、 a rocket used for?Its used for sending satellites or spaceships into space.(摸出牙刷。) T: How do you say this in English, S2?S2: Sorry, I dont know.T: OK, it is a toothbrush.(板书 toothbrush，领读并要求学生掌握该单词及复数形式。)toothbrush toothbrushes T: (手拿牙刷问)Whats it used for?S2: Its used for brushing teeth.T: Whats it
8、 made of, S2?S2: Its made of plastic.T: Very good! Youre right.(摸出一瓶墨水。) Whats this in English, S3?S3: Sorry, I dont know.T: Its a bottle of ink.(板书，领读并要求学生掌握。)ink T:Do you know what it is used for?S3: Its used for writing.(从魔盒中摸出一张纸，做神秘状。)T:How do you say this in English, S4?S4: Its a piece of pape
9、r.T:Can you tell me what it is made from? (让其摸一摸，看一看。)S4: Sorry, I cant.T:Let me tell you. It is made from wood. (说的时候语速要慢，重音放在 from。)(引导学生总结 be made of 与 be made from 的区别。板书并解释。)be made of + 材料：表示原材料容易被看出。be made from + 材料：表示原材料经过化学变化，不易被看出。2. (让学生不要打开课本，听 1a，回答下列问题，听后核对答案。 )T: Dont open your books
10、. Listen to the tape carefully and try to find out the answers to the questions.(出示小黑板。)(1)Why is Jane unhappy?(2)Who made the model rocket?(3)What is a rocket used for?(核对答案。)3. (让学生打开课本，找出疑难句。教师出示小黑板。)Im not allowed to play computer games.Its made of metal.Its used for sendingintoI wish I could go
11、 into space some day.(解释此句使用了虚拟语气，在此只要求了解。)I hope your dream will come true.Step 3 Consolidation 第三步 巩固(时间:8 分钟)巩固 1a 及 be made of/from, be used for 的用法。完成 1b。1. (让学生打开课本，再听 1a 录音，学生跟读，感受纯正的语音语调。 )T: Open the books, listen to the tape and read after it. Pay attention to the pronunciation and intonat
12、ion.2. (让学生找出对话中的关键词，教师板书。然后让学生根据关键词两人对话复述 1a。)T: Boys and girls, lets find out the key words together, OK?(板书)Janeunhappy / be not allowed to / be bad forKangkanga model rocket / be made of metalbe used for / satellites or spaceships / learn from/ wish/ hope/ come true3. (让学生认真阅读 1b 中的例子，然后让他们仿照例子用
13、实物编对话，完成 1b。)T: In 1b, we can see two dialogs. Read them carefully and pay attention to the sentence patterns, “be made of”, “be made from” and “be used for”. Make similar conversations in pairs.Step 4 Practice 第四步 练习(时间:13 分钟)由一般现在时的被动语态，引出一般过去时的被动语态并加以操练。引出 2a 的内容，展开任务型活动，让学生掌握目标语言。完成 2b。1. (继续操练
14、be made of/from 及 be used for 的用法。)T:(老师手指录音机问。) Boys and girls, whats this in English?Ss: We dont know.T:Its a recorder.(板书生词并让学生掌握。)recorderT:Whats it used for?Ss: Its used for helping us to improve our English. (引导学生回答。)T:Yes, what is this? (从魔盒里拿出 MP3。)Ss: Its an MP3 player.T:Yes, it was develop
15、ed in Korea. Its more useful than a recorder.(板书画线句子让学生观察，并与一般现在时的被动语态相比较，帮助学生总结出一般过去时被动语态的构成并举例作适当讲解。)was/were+及物动词的过去分词It was developed in Korea.The bridge was built in 1990.The cup was used in old days.T:(手拿 MP3 问。) When was it developed? And whats it used for? Lets listen to 2a.2. (放录音，听后核对答案。)T
16、:S1, answer the questions, please!S1: The MP3 player was developed around 1998. Its used for helping us to improve our English. Its more useful than a recorder.3. (让学生阅读 2a 对话，找出关键词，为下一步活动做准备。 )T: Read 2a, and underline the key words.(板书关键词。)an MP3 player, be used for,help us to improve our English, develop,around 1998, Korea, more useful, recorder, buy4. (指导学生利用黑板上的关键词复述 2a 对话，巩固一般过去时被动语态的句型。完成2a。)T
