Unit 4 Amazing Science-Topic 1 When was it invented -Section A-ppt课件-(含教案)-市级公开课-仁爱科普版九年级上册(编号：b6655).zip

is spoken by She speaks Chinese. is spoken by He speaks English. English English.He him. Chinese Chinese.She her. 被动语态(Passive Voice ) be + done 主动语态： 主语 + 动词 + 宾语 被动语态： 主语 + be + 过去分词 + by + 宾语 Many people use computers. Computers _ _ by _ _. The workers plant trees in the garden. Trees _ _ in the garden _ the workers. are used many people are planted by Can you try ？ Exercise 1. Trees _ (water) in our school every three days. 2. The zoo _ (visit) by lots of children on weekends. 3. A Journey to West _ (show) on CCTV every summer. 4.On Christmas Day, children wake up early and cant wait _ (open) the boxes of presents. 5. Well have a chance _ (see) the flower show this weekend. to open is shown are watered to see is visited A: Whats the lock made of? B: Its made of metal. A: Whats it used for? B: Its used for locking the door. n.锁 v.（用锁） 锁上，被锁住 2 Follow the example to make up similar conversations. lock/metal A: Whats the paper made from? B: Its made from wood. A: Whats it used for? B: Its used for writing on. paper/wood computer desk /wood chopsticks/bamboo sweater /cotton watch/metal be made of 由某种物质做成(看得出原 材料，物理过程) be made from 由某种物质制成(看不出 原材料，化学过程) be made up of 由几部分组成 be made in 在某地/某时制造 be made by 由某人制造 be made into 被制成 1 2 A. Whats it made of? B. Its made of metal. A. Do you know what it is used for? B. Its used for sending satellites or spaceships into space. Wow !A model rocket ! 1a Listen, look and say. Why is Jane unhappy? Because Jane was not allowed to play computer games last night. allow v. 允许 1. allow sb. to do sth. 允许某人做某事 2. allow doing sth. 允许做某事 3. be allowed to do sth. 被允许做某事 聚焦一般过去时的被动语态 结构:助动词(was/were)+及物动词的过去分词 1.肯定句式 ：主语+was /were+v.-ed 2.否定句式 ：主语+was/were + not+v.-ed 3.一般疑问句式： Was /Were+主语+vt.-ed 4.特殊疑问句式：疑问词W/H+was/were+主语+v.-ed E.g. An e-mail was sent to her friend by Jane yesterday. An e-mail wasnt sent to her friend by Jane yesterday. Was an e-mail sent to her friend by Jane yesterday? Who was the e-mail sent to by Jane yesterday? Lets sum up together. 1b Listen to 1a and mark T (True) or F (False). 1.Jane is unhappy because she was not allowed to go to a party last night.( ) 2.Kangkangs father made a model rocket for him. ( ) 3.The rocket is made of metal. ( ) 4.A rocket is used for sending satellites or spaceships into space. ( ) F F T T 1c Read 1a and answer the following questions. 1. Why did Kankang ask Jane not to spend too much time on computer games ? Its bad for her health if she spends too much time on them. too tiredheadache sore eyes 2. Whats a rocket used for? Its used for sending satellites or spaceships into space . be used for 被用来做 be used to do 被用来做 be used as 被用作 used to do sth. 过去常做 be used to doing sth. 习惯于做 3. Who taught Kangkang some knowledge about spaceships? Mr. Brown. 4. Whats Kangkangs dream? He wishes he could go into space some day. some day-某一天，总有一天(将来) e.g. I wish I could have my own house some day. I hope his dream will come true . come true-变成真的,实现 realize/achieve-make sth. come true Change the following sentences. 1.My mother allows me to use her cellphone.(改为被动语态 ) I _ _ _ use my mothers cellphone. 2.A rocket is used for launching satellites and spaceships. (就画线部分提问) _ _ a rocket _ _? 3.The digital camera was invented in 1975. (就划线部分提 问) _ _ the digital camera _ ? 4. Maybe he is an inventor. (改为同义句) He _ _ an inventor. am allowed to What isused for When was invented may be Summary We learn: 1.Some words: lock, rocket, metal, satellite, spaceship 2. Some phrases: be made of, be used of, some day, come true 3. Some sentences: (1) I wish I could go into space some day. (2) I hope your dream will come true. (3) -What is a rocket used for? -Its used for sending satellites or spaceships into space. We can: Use the passive voice. Read 1a. Memorize the useful expressions and key sentences that we learn today. Finish Section A in your workbook. Preview Section B. U4T1SA 1 Unit 4 Amazing Science Topic 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 aims 1. 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。 九年级上册教学案例设计 2 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 points 1. 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 +pp 2. Difficult points： be made of 和 be made from 的用法辨析。 I wish I could go into space some day. U4T1SA 3 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 procedures Stage (time period) Interaction patterns Teacher activityStudent activityRemarks 1 Revision & lead-in (10mins) Class activity Step 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? Change the present active voice into passive voice. 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。 九年级上册教学案例设计 4 Group work Example: Group A People 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? 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. 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。 U4T1SA 5 Group work T: Thats nice. How about Sentence Two? T: Perfect! Example : Group B A 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 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. 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。 九年级上册教学案例设计 6 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? 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 2 Pre-listening (4mins) Class activity Individual work Step 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. Learn the new words. Ss: Its a rocket. Ss:. Read the statements in 1b and guess the meaning of be made of. 这几个单词需要老师引 导才能学习。 U4T1SA 7 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! S1: 被.制成 S2: 由.制成 3 While-listening (2mins) Individual work Let 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 F S2: No.2 is F S3:. S4:. 九年级上册教学案例设计 8 4 Post-listening (12mins) Individual work Individual work Step 1: Let the Ss read the questions in 1c, and then read 1a and find the answers to the questions. T: Here are 4 questions in 1c. Read them quickly, and then read 1a and underline the answers to the questions. If you finish, raise your hand, please. T: Now, its time to check the answers. Please use full sentence while answering. Who wants to answer the first question? T: Perfect answer! Who wants to try the second one? T:. Step 2: Let the Ss read 1a again and underline the passive voice and the key points. T: Now, you will read 1a again. This Read the questions in 1c, then read 1a and find the answers to the questions. S1: Because its bad for her health if she spends too much time on computer games. S2: A rocket is used for sending satellites or spaceships into space. S3:. Read 1a again and underline the passive voice and the key points. S1: I was not allowed to play computer games last night. S2: It was made by me. S3: Whats it made of? . S4: Why “could” is used in the U4T1SA 9 time, you will underline the passive voice, the difficult points and key points. When you finish, raise your hand. T: First, lets deal with the passive voice. xxx, please. T: You are smart. Lets come to the second part: the difficult points. Who has questions? T: Good question! Its a very important sentence. Its usually used to express wishes，but its unlikely to come true. T: Now, what about key points? Come on! second sentence from the bottom? Can I use “can” instead? S5: be allowed to do sth., be bad for S6: spend . on sth., be made of S7: be used for doing sth. learnfrom, come true wish 表示祝愿、愿望， 要给学生强调这个愿望 不太可能实现。但不要 讲得太深，虚拟语气可 以不提。 5 Finishing Task 2 (5mins) Individual work Step 1: Let the Ss read the examples in 2 and find the differences between Example One and Example Two. Read the examples in 2 and find the differences between Example One and Example Two. 这个部分分成两步骤来 完成较好。第一，帮助 学生区分 be made of 和 九年级上册教学案例设计 10 T: Now, read the examples in 2 and find the differences between Example One and Example Two. T: What differences have you found? T: Superb! What else? T: Right! If you can see the material with your naked eyes, you should use “be made of”. If not, use “be made from”. For example, the lock is made of metal. You can see it clearly with your naked eyes. But, as for the paper, you cant see wood directly with your naked eyes, so you say the paper is made from wood. Now, look at the pictures below the S1:“Be made of”is used in Example 1 and “be made from” is used in Example 2. S2: There is a preposition “on” after “write”, but there is no preposition after “lock”. be made from 的用法。 第二，如何运用介词。 理解这两点，有利于学 生构建对话。学生不能 解释清楚的老师要补充。 老师在此过程中，顺便 解释 lock。为了简单明 了，老师可以用汉语解 释，因为涉及到不少术 语，学生难以听懂。 U4T1SA 11 Pair work dialogs. See if you can see the material with your naked eyes . T: Lets check. Computer desk, be made of or be made from? T: Chopsticks? . T: Well done! How do we decide whether to use a preposition or not? The answer is: if the action is done by the object itself, there is no need to use a preposition, and if not , then a preposition is needed . Step 2: Let the Ss make up similar dialogs in pairs. Ss: Be made of. Ss: Be made of. . Make up similar dialogs in pairs. 九年级上册教学案例设计 12 T: Now, lets do pair work. Make up similar dialogs. Go ahead! T: Id like some pairs to act out your dialogs . Which pair ? T:. S1: Whats the computer desk made of ? S2: Its made of wood S1: Whats it used for? S2: Its used for putting computers on. 7 Finishing Task 3a (5mins) Individual work Step 1: Let the Ss look at the pictures in 3a to learn the new words laptop and digital, and then listen to 3a and number the pictures. T: Do you know what the picture 1 is? T: Yes, but we call it a laptop. Because we usually put it on the top of our lap while using it. Learn the new words, listen to 3a and number the pictures. Ss: Its a computer. U4T1SA 13 Individual work T: How about the picture 3? T: Its a digital camera. T: Now, you will listen to 3a and number the pictures. T: Check answers! Step 2: Let the Ss listen to 3a again and fill in the table in 3a. T: Listen to 3a again and fill in the table in 3a. T: Now, lets check the answer one by one. First, laptop. What is it made of? T: Whats it used for? T:. Ss: Its a camera. Ss:. Listen to 3a again and fill in the table in 3a. S1:Its made of plastic. S2: Its used for . S3:. 8 Finishing Task 3b (3mins) Pair work Let the Ss read the example in 3b, and then make up similar dialogs in pairs based on the information in the table in Read the example in 3b, and then make up similar dialogs in pairs based on the information in the 九年级上册教学案例设计 14 3b. T: First, read the example in 3b, and then make up similar dialogs in pairs based on the information in the table in 3a. T: Good news! I will have a photo with the first pair! Which pair will be the first one? table in 3b. S1: What is a cellphone made of ? S2:Its made of plastic and metal. S1: Whats it used for? S2: Its used for making telephone calls . S1:. S2:. 9 Summarizing and assigning homework (4mins) Class activityStep 1: Let the Ss go over this section and sum up the key points T: We have only a few minutes left. Lets sum up the key points of this section. T: Lets begin with grammar. T: Whats the structure of it? Sum up the key points. Ss: Passive voice in the past. Ss: Was / were + pp S1: Be made of , be made from, be U4T1SA 15 T: And key points? 2:HMK T: Now, computers are widely used in our daily life. But do you know the history of computers? Find some information about computers and write a short passage. Try to use the past passive voice as much as possible. used for doing sth. S2: Allow sb. to do sth., be allowed to do sth. S3: Spend on sth. S4: I wish. S5: . Blackboard design When was it invented ? Section A Words and phrases: be made of come true be used for doing sth. be made from Grammar: the past passive voice structure: was / were + pp 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 someday. 九年级上册教学案例设计 16 I hope your dream will come true.