2018届九年级英语全册Unit6Whenwasitinvented第3课时教案.docx

Unit 6 When was it invented? Section A （Grammar Focus- 4c）一、【教材分析】教学目标知识目标1.会听说读写下列单词：fridge; low; somebody; translate; lock; earthquake; sudden; all of a student; bell; biscuit; cookie; musical; instrument.2. 正确使用语法要点中的句型：（1）When was the zipper invented? It was invented in 1893.（2）Who was it invented by? It was invented by Whitcomb Judson.（3）When was tea brought to Korea? It was brought to Korea during the 6th and 7th centuries.（4）What is the hot ice-cream scoop used for? Its used for serving really cold ice-cream.（5）Alexander Graham Bell invented the telephone in 1876.（6）The telephone was invented by Alexander Graham in 1876.能力目标进一步学习运用一般过去时态的被动语态；掌握主动语态变被动语态的方法，并通过不同方式的练习，来熟练运用。情感目标培养想象力，善于观察事物。面对难题，用积极的态度去解决，发挥想象力，认识世界，改造世界。教学重点1.学习单词fridge, low, somebody, translate, lock, earthquake, sudden, all of a sudden, biscuit, cookie, instrument.2.复习巩固Section A 部分所学的生词和词组。教学难点1.一般过去时态的句子变为被动语态。2.综合运用所学的知识进行练习运用。教学方法情景教学法；任务型教学法。二、【教学流程】 环节师生活动二次备课I. 复习热身1、检查生词预习。（1）先通过PPT呈现本课的单词，教师领读，学生跟读，教师帮助学生正音。（2）做题巩固。根据句意及首字母提示完成单词。 Food is put in the f_ to keep fresh. The music was so beautiful, it went high and l_, up and down. The book was t_ into different languages. When I got to my classroom, I found the door was l_. So I had to wait for half an hour until they came. Most of the buildings and trees fell down after the e_.答案：fridge low translated locked earthquake 2、自由交谈。通过“pair work”的形式练习下列对话。When was it invented? It was invented Where was it invented? It was invented Who was it invented by? It was invented by . 感知体验感知1. 用PPT呈现下列被动语态的句型，感知被动语态的结构。The pioneers of different inventions were listed there.It mentioned that the zipper was invented by Whitcomb Judson in1893.The book describes how tea plants were grown and used to make tea.It was believed that tea was brought to Korea and Japan during the 6th and 7th centuries.体验1.分小组探讨过去时的被动语态的构成。感知2. PPT出示课本“Grammar Focus”中的对话。When was the zipper invented? It was invented in 1893.Who was it invented by? It was invented by Whitcomb Judson.When was tea brought to Korea? It was brought to Korea during the 6th and 7th centuries.What is the hot ice-cream scoop used for? Its used for severing really cold ice-cream.体验2.一般过去时被动语态（1）一般过去时被动语态表示过去经常性、习惯性被动动作或过去某一时刻发生的被动性动作，与主动语态相比,被动语态中主语是谓语动作的执行者。 被动语态的构成：was (were) + done（2）主动语态变被动语态的步骤：主动语态的宾语变为被动语态的主语；主动句的谓语动词变为被动结构；主动句的主语变为被动句的宾语，由by引出，当不强调动作的执行者时，常省略。其它成分不变。E.g.: Bell invented the telephone in 1876. The telephone was invented by Bell in 1876. .强化巩固1. 处理课本内容4a部分。Rewrite the sentences using the passive voice.（1）They sold the fridge at a low price.The fridge was sold at a low price.（2）Somebody stole my camera from my hotel room.My camera was stolen from my hotel room.（3）Where did you take these photos?Where were these photos taken?（4）Our parents advised us not to go out alone.We were advised not to go out alone by our parents.（5）Different writers translated the book into different languages. The book was translated into different languages by different writers.2. 处理课本内容4b部分。Complete the sentences with the correct forms of the verbs in the box. eat like invite tell lock ring break bring（1）You _ to the party last night, werent you? Why didnt you go?（2） The earthquake happened all of a sudden, but luckily the villagers _to a safe place.（3）The door_ when we arrived, so we _the bell.（4）The students _not to eat or drink in class, but Ruby_ the rule when she started eating a biscuit in science class.（5） The cookies_ by the hungry kids in less than 20 minutes, and they really _ them.答案:（1）were invited （2）were brought （3）was locked ,rang （4）were told, broke （5）were eaten, liked3. 处理课本内容4c部分。Decide whether active or passive forms should be used in these sentences.The telephone_ (invent) by Alexander Graham Bell. He_ (born) in 1847. Mr. Bell_ (work) on the invention of the telephone with Thomas Watson. In 1875, Mr. Bell _ (learn) how to send musical notes through an instrument similar to a telephone. Finally, the telephone_ (invent) in 1876. The first sentence that_ (say) on the telephone by Mr. Bell was “Mr. Watson, come here; I want to see you.” Today the telephone_ (use) around the world.Answers: was invented; was born; worked; learned; was invented ;said; is used4.语言知识点的归纳总结。（1）They sold the fridge at a low price. 他们以低价出售这台冰箱。 low形容词，意为“低的；矮的”，常用短语 at a low price 意为“以低价”。 She jumped over the low wall. 她跳过了那堵矮墙。 This sweater is on sale at a low price. 这件毛衣正以低价出售。（2）Somebody stole my camera from my hotel room. 有人从我的宾馆房间里偷走了照相机。somebody不定代词，意为“某人；重要人物”，用于肯定句中。作主语时谓语动词用单数形式，其同义词为someone。 There is somebody waiting to see you.有人在等着见你。anybody不定代词，意为“有人”，常用于否定句和疑问句中；用于肯定句中意为“任何人”。 Is there anybody who can help me? 有人能帮我吗？ Anybody can do the work well. 任何人都能把这项工作做好。（3）Different writers translated the book into different languages.不同的作家把这本书翻译成不同的语言。 translate 动词，意思为“翻译”，常用于translateinto结构中，表示“把翻译成”。 These poems dont translate easily.这些诗不好翻译。 They translated his books into several languages.他们把他的书翻译成了好几种语言。（4）The earthquake happened all of a sudden, but luckily the villagers were brought to a safe place. 地震突然发生了，但是幸运的是村民们被带到了安全的地方。 all of a sudden 意思为“突然；猛地”。 All of a sudden, the lights went out.突然；灯都灭了。 The boy began crying all of a sudden.那个男孩突然开始哭起来。【拓展】suddenly 副词 意思为“突然” In a few minutes, Tom suddenly came to life.一小会儿后汤突然苏醒过来。. 实践应用分小组练习主动语态和被动语态的转换。A: They sold the fridge at a low price.B: The fridge was sold at a low price.C: Somebody stole my camera from my hotel room.D: My camera was stolen from my hotel room.A: Where did you take these photos?B: Where were these photos taken?C: Our parents advised us not to go out alone.D: We were advised not to go out alone by our parents.E: Different writers translated the book into different languages.F: The book was translated into different languages by different writers.总结反馈1.结合板书和课件，让学生盘点所学词汇和句型。词汇：fridge; low; somebody; translate; lock; earthquake; sudden; all of a student; bell; biscuit; cookie; musical; instrument句型：（1）When was the zipper invented? It was invented in 1893.（2）Who was it invented by? It was invented by Whitcomb Judson.（3）When was tea brought to Korea? It was brought to Korea during the 6th and 7th centuries.（4）What is the hot ice-cream scoop used for? Its used for serving really cold ice-cream.（5）Alexander Graham Bell invented the telephone in 1876.（6）The telephone was invented by Alexander Graham in 1876.2. 当堂练习。将下列各句改为被动语态。 （1）They planted the trees ten years ago. The trees _ _ ten years ago.（2）The terrible storm broke the windows of the houses in this area last night. The windows of the houses in this area _ _ by the terr