Unit 4 Amazing ScienceTopic 1 When was it invented?Section A. Material analysis本课是九年级第四单元第一话题的第一课时。主活动是1a和2。1a 通过Kangkang 和Jane 谈论火箭模型，引入本课的语法：一般过去时的被动语态。1b 是检查学生听1a的效果，1c则是检查学生阅读理解的能力。2重点操练be made of，be made from和be used for。3a 以听的形式让学生加深对2a的句型和1a的语法的理解。3b 让学生能够把本课的句型和语法正确地说出来。总之，本课把句型和语法充分地融合到听、读、说当中。. Teaching aims1. Knowledge aims：掌握本课的重点词汇和短语，初步学习一般过去时的被动语态。2. Skill aims: 能够在听、说、读、写中正确运用一般过去时的被动语态。3. Emotional aims: (optional) 鼓励学生要勤思考、有理想、争做未来的发明家。4. Culture awareness: (optional) 了解其他国家的科技发明。. The key points and difficult points1. Key points: Words and phrases: lock, metal, be made of, be made from, be made in, be used for, be allowed to do sth. Sentences:Whats it made of? Its made from wood. Whats it used for? Its used for locking the door. I wish I could go into space some day. I hope your dream will come true.Grammar: was/were +pp2. Difficult points：be made of和be made from的用法辨析。 I wish I could go into space some day. Its used for writing on . Learning strategies通过温习一般现在时的被动语态知一般过去时的被动语态，实现从一般现在时的被动语态到一般过去时的被动语态的转换。通过联系生活实践，来区分be made of和be made from。在交流中，重在表意，不要担心出错。. Teaching aids有关新词的图片/实物（如：数码相机,锁）/录音机/小黑板/PPT。. Teaching proceduresStage(time period)InteractionpatternsTeacher activityStudent activityRemarks1Revision & lead-in(10mins)Class activity Group workGroup workStep 1: Let the Ss change the sentences in Group A into present passive voice.T: Look at these sentences and try to change them into passive voice. T: xxx, do you want to try the first one?T: Wonderful! The second one?Example: Group APeople speak English around the world.The monkeys eat the bananas.Water washes away the earth.The chemical factory pollutes the river.Step 2: Present the sentences in Group B and encourage the Ss to discuss in groups and change them into passive voice, too. T: You have done very well. Now look at this group of sentences. Again, you change them into passive voice, but this time, you will discuss in groups first.T：Any volunteers?T: Which group has different opinions?T: Thats nice. How about Sentence Two?T: Perfect! Example : Group BA P.E teacher in the USA invented basketball in the nineteenth century.The worker cut down the trees yesterday.I made this model plane.Mr. Wang punished him.The cat ate the fish.Step 3: Let the Ss observe the two groups of sentences and try to find the differences between them. Move to past passive voice.T: Observe the two groups of sentences in your group and find out the differences between them.T: Hi, class, have you found anything different?T: Your group is wonderful today. Anything else?T: Great! Can you guess what we call the sentences in Group B?T: Yes. You made it. Could you tell me the structure of it?Change the present active voice into passive voice.S1: English is spoken by people around the world.S2: The bananas are eaten by the monkey.S3:.Change the past active voice into passive voice.S1: Basketball is invented by a P.E teacher in the USA in the nineteenth century.S2: Basketball was invented by a P.E teacher in the USA in the nineteenth century.S3: The trees were cut down by the workers yesterday.S4: This model plane was made by me.S5: He was punished by Mr. Wang.S6: The fish was eaten by the cat.Observe the two groups of sentences and try to find the differences between them.S1: Group A is in present tense while Group B is in past tense.S2: We use “is” or “are” in group A, but we use “was” or “were” in Group B.S3: 过去时的被动语态。S4: was / were + pp通过复习一般现在时的被动语态来过渡到一般过去时的被动语态。以旧引新、比较学习能让学生更快地掌握新知识。一定要把学生说出的被动语态的句子板书出来，为后面的教学作准备。如果学生能正确地表述过去时的被动语态，老师直接板书，如果不能，老师要引导学生总结出来。2Pre-listening (4mins)Class activity Individual workStep 1: Use pictures, real objects or PPT to teach: rocket, satellite, spaceship, metal.T: Look at the picture. Whats it? Step 2: Let the Ss read the statements in 1b and guess the meaning of be made of.T: Now, read the statements in 1b and try to guess the meaning of be made of .T: Who knows the meaning of be made of? Hands up, please!T: Almost right, but not exactly. Anyone else?T: Good boy! You got it!Learn the new words.Ss: Its a rocket.Ss:.Read the statements in 1b and guess the meaning of be made of.S1: 被.制成S2: 由.制成这几个单词需要老师引导才能学习。3While-listening (2mins)Individual workLet the Ss listen to 1a and do 1b.T: Now, listen to 1a and do 1b. We will check the answers after listening.T: Has everybody got the answers? T: Yes! You please.T: Next one? T:.Listen to 1a and do 1b.S1: No.1 is FS2: N