Unit6教案- 2024-2025学年英语人教版九年级全册

Unit 6 When was it invented? 第一课时 Section A(1a—2d) 教学目标： 1.重点单词：style,project,pleasure,daily,website,pioneer,list,mention 2.重点短语：be used for, the style of, with pleasure,such a great invention,in our daily lives, have a point 3.重点句型： (1)I think the TV was invented before the car. (2)What are they used for? (3)Is it really such a great invention? (4)But at that time,it wasn’t used widely. 重点：掌握本课时的单词、词组和句型，学习运用一般过去时的被动语态; 学会询问发明时间及用途的基本句型。 难点：运用一般过去时的被动语态来讨论发明的时间及用途。 教学过程： Step 1 Warming up T:Do you know what these inventions are? S1:It’s a car. S2:It’s a telephone. S3:It’s a television. T:Do you know who these inventors are? S1:Karl Benz. S2:Alexander Bell. S3:J.L.Baird. Let students match the inventions and the inventors. Step 2 Work on 1a 1a Look at the things below.In what order do you think they were invented?Discuss them with your group.Then number them [1-4] (1=first,4=last). T:When do you think the TV was invented? S:I think the TV was invented before the car. T:What about you? S:Well,I think the TV was invented after the car. The answers are:4, 2, 1, 3 Step 3 Listening 1b Listen and match the inventions with the years. Get the class to listen and write letters from 1b.And check them. The answers are:d, a, c, b Step 4 Group work 1c Student B,cover the dates.Student A,ask Student B when the things in the picture in 1b were invented.Then change roles and practice again. A:When was the telephone invented? B:I think it was invented in 1876. A:When was the car invented? B:I think it was invented in 1885. … Step 5 Listen and check 2a Listen and number the inventions [1-3] in the order you hear them. The answers are:3, 1, 2 2b Listen again and complete the chart below. Invention What is it/are they used for? shoes with special heels changing the style of the shoes shoes with lights seeing in the dark hot ice-cream scoop serving really cold ice-cream Step 6 Group work 2c Make conversations using the information in 2b. A:What are they used for? B:They’re used for… Step 7 Role-play the conversation 1.Before Acting （1）What’s the invention in the conversation? （2）Who invented the zipper?When was the zipper invented? （3）Read the conversation aloud for a few minutes by themselves. 2.While Acting Role-play in groups in front of the class. 3.After Acting （1）Read the conversation and find out the following phrases and sentences. with pleasure,such a great invention,have a point,at that time ①Small inventions that changed the world. ②Is it really such a great invention? ③You do seem to have a point … ④So when did it become popular? （2）Check the answers to the questions in “Before Acting” one by one. The answers are:(1)The zipper. (2)The zipper was invented by Whitcomb Judson.In 1893. Step 8 Summary Make students learn about more inventions and what they are used for. 第二课时 Section A(3a—3c) 教学目标： 1.重点单词：spread,ruler,boil,remain,national,trade,doubt 2.重点短语：by accident,without doubt 3.重点句型： (1)Some leaves from a tea plant fell into the water and remained there for some time. (2)The book describes how tea plants were grown and used to make tea. (3)In England,tea didn’t appear until around 1660,but in less than 100 years,it had become the national drink. 重点：掌握本部分出现的生词和词组，达到熟练运用的目标。 难点：阅读短文，获得相关的信息；通过阅读练习，来提高阅读能力。 教学过程： Step 1 Warming up Look at the picture in 3a.Answer the questions. 1.Do you like drinking tea? 2.How was tea invented? Step 2 Skimming 3a Read the passage quickly and match each paragraph with its main idea. The answers are: Paragraph 1 Lu Yu and his book Cha Jing Paragraph 2 How tea spread to other countries Paragraph 3 How tea was invented by accident Step 3 Reading and answering 3b Read the passage again and answer the questions. The answers are： 1.It was first drunk about 5,000 years ago. 2.Some leaves from a tea plant fell into the boiling water.It produced a nice smell and tasted delicious.This is how tea was invented. 3.Lu Yu. 4.It’s a book about tea. 5.It was brought to Korea and Japan during the 6th and 7th centuries，and to England around 1660. 3c Complete the sentences with the correct forms of the verbs in the box. Check the answers with the students. The answers are:1.invented 2.drunk 3.produced 4.brought 5.traded Step 4 Summary Make students learn about tea culture,how tea plants were grown and used to make tea. 第三课时 Section A(Grammar Focus—4c) 教学目标： 1.重点单词：fridge, low, somebody, wolf,warn,translate,lock,ring, earthquake, sudden, bell,biscuit, cookie,musical,instrument 2.重点短语：at a low price,advise sb. to do,translate…into…,all of a sudden 3.重点句型： (1)—When was the zipper invented? —It was invented in 1893. (2)—Who was it invented by? —It was invented by… (3)They sold the fridge at a low price. (4)Different writers translated the book into different languages. 重点：学习生词,复习巩固Section A部分所学的生词和词组,达到熟练运用的目标。 难点：理解和掌握一般过去时的被动语态；主动语态和被动语态的相互转换。 教学过程： Step 1 Warming up Look at the two sentences and make sentences using passive voice. 1.They planted flowers in the garden last year. 2.They sent the man to the hospital an hour ago. The answers are: 1.Flowers were planted in the garden last year. 2.The man was sent to the hospital an hour ago. Step 2 Free talk 1.Ask students to read the Grammar Focus first. 2.Ask students to focus on the usage of passive voice. 语法拓展: 一般过去时的被动语态 在第5单元已介绍了被动语态的概念、一般现在时的被动语态及主动语态变被动语态的用法，本单元主要介绍一般过去时的被动语态。 一般过去时的被动语态的结构： 一、肯定句式：主语+was/were+动词的过去分词（+by…）. The classroom was cleaned by me yesterday afternoon.昨天下午我打扫了教室。 二、否定句式：主语+was/were+not+动词的过去分词（+by…）. He wasn’t sent to the city last month.上个月他没被送到城市。 三、一般疑问句式：Was/Were+主语+动词的过去分词（+by…）? 肯定回答：Yes,主语+was/were.否定回答：No,主语+wasn’t/weren’t. —Was your homework finished last weekend?上周你的作业完成了吗？ —Yes,it was./No,it wasn’t.是的，完成了。/不，没完成。 四、特殊疑问句式： 1.当疑问副词/代词不作主语时： 疑问词+was/were+主语+过去分词(+by…)? Where was the car parked?那辆车被停在什么地方？ 2.当疑问代词作主语时： 疑问代词+was/were+过去分词(+by…)? Who was sent to the hospital?谁被送到医院了？ Step 3 Finish 4a—4c 4a Rewrite the sentences using the passive voice. The answers are: 2.My camera was stolen (by somebody) from my hotel room. 3.Where were the photos of these wolves taken (by you)? 4.They were warned not to climb the mountain in bad weather (by the guide). 5.The book was translated into different languages (by different writers). 4b Complete the sentences with the correct forms of the verbs in the box. The answers are:1.were invited 2.were brought 3.was locked;rang 4.were told; broke 5.were eaten;liked 4c Decide whether active or passive forms should be used in these sentences.Write the correct forms in the blanks. The answers are:was invented;was born;worked;learned;was invented;was said;is used Step 4 Summary Make sentences using passive voice. 第四课时 Section B(1a—1e) 教学目标： 1.重点单词：sour,customer 2.重点短语：by mistake,in the end 3.重点句型： （1）Potato chips were invented by mistake. （2）The customer said they were not salty enough. （3）George wanted to make the customer happy. （4）The customer was happy in the end. 重点：掌握重点单词和短语。 难点：学会用一般过去时的被动语态对更广泛的发明进行描述。 教学过程： Step 1 Warming up 1.Let students watch some interesting pictures in 1a. 2.Ask some questions about them. T:What’s it? S1:Ice-cream. T:What did you think of the ice-cream? S2:Sweet,cool and delicious! T:Well,let’s look at some other delicious food. 1a The words in the box describe how food can taste.Write them under the correct pictures.Some pictures have more than one word. crispy sour sweet salty salty 1b Write the name of a different food after each word. The answers：crispy:fried chicken；salty:salted eggs；sour:lemon Step 2 Listening and speaking 1c Listen and circle T for true or F for false. 1.Tell students the conversation is about how the potato chips were invented.The story is very interesting. 2.First,let students read the sentences in 1c.Make sure they know the meaning of each sentence. 3.Play the recording for the students.Listen for the first time.Play the recording again and judge T or F. The answers are:2.F 3.T 4.F 5.F 6.T 1d Listen again.Complete the sentences. 1.Let students read the article in 1d first.Tell students to listen again and fill in the blanks with the right words. 2.Play the recording again for the students to listen and write the words. The answers are:were invented;1853;thin;crispy;really salty Step 3 Group work 1e Make a conversation about the invention of potato chips.Use the information in 1c and 1d. A:Did you know potato chips were invented by mistake? B:Wow,I didn’t know that.Who invented them? A:… 第五课时 Section B(2a—Self Check) 教学目标： 1.重点单词：Canadian,divide,basket,hero,nearly 2.重点短语：divide…into …,at the same time,stop sb.from doing sth.,dream of doing, the number of , more and more, look up to, not only…but also…, encourage sb. to do, achieve one’s dream 3.重点句型： (1)Today,the popularity of basketball has risen around the world,with many young people dreaming of becoming famous players. (2)The number of foreign players,including Chinese players,in the NBA has increased. (3)It has three colors and is used for … (4)It’s hard to tell who came up with the idea first. (5)They used five eggs to make this big cake. (6)This is because sometimes a few people may invent things which are nearly the same. 重点：掌握本单元所学的词汇、句型及语法知识，并能进行综合练习运用。 难点：用英语简要介绍某一发明的过程。 教学过程： Step 1 Lead-in 2a Do you like basketball?Do you watch basketball games?How much do you know about this sport?Discuss the sport with your partner and share your ideas with the class. Step 2 Reading Work on 2b Tell students to read the passage quickly.And find the main idea of each paragraph. Work on 2c Careful Reading.Complete the mind map with the information in the passage.What else can you add to the mind map? 1.Check the answers with the class. 2.Tell students to work hard and add something to the mind map.Encourage students to try their best. 2d Use the mind map to summarize what you and your partner remember about the development of basketball.Use the following questions to help you. The answers are： 1.(Dr.)James Naismith invented basketball.There are two teams and players on the same team must work together to get the ball into the other team’s basket. 2.The first basketball game in history was played on December 21,1891. 3.The Berlin Olympics were important because basketball became an Olympic event then. 4.The professional basketball groups are the NBA in America and the CBA in China. 5.Basketball is played by more than 100 million people in over 200 countries. Work on 2e Ask students what they think of famous basketball players.Make a list of good and difficult things about being a basketball player. 1.Students work in groups.Discuss them with their partners and make a list. 2.Let some groups read their lists. Step 3 Finish 3a—3b 3a Think of something that you do not like to do.Then think of an invention that could help you.Make notes. Problem:quickly taking notes in class New invention:a special pen What it is used for: 3b Imagine you are a business person.Write a description of your new invention.Try to sell the invention to the class. You can begin like this: This special pen was invented by Liu Jie.It has three colors and is used for… 话题写作指导 一、话题分析 本单元的话题是“发明”，与此相关的写作任务是能简单介绍某项发明的历史、用途、特点等。写作时要有条理、准确、简明，要正确运用被动语态。 二、写作范例 假如你发明的“飞行单车”在学校科技节中获奖，被推荐参加一个国际青少年科技展览。请用英语介绍你的发明，包括以下图示内容。 参考词汇：轮子wheel 太阳能solar power 思路点拨： 1.体裁：说明文 2.人称：第三人称 3.时态：一般现在时 写作步骤： 第一步：审题，找出文章要表达的中心； 第二步：用简单的句子或短语列出文章要点； 第三步：添加首尾句，使文章结构完整； 第四步：用恰当的关联词，使句子和段落衔接自然。 开篇点题 a flying bike,a great invention 正文介绍 two wheels and two wings,ride,fly,take photos,call others,travel fast, protect the environment,save energy 总结收尾 add something to,set an umbrella 参考范文: My invention is a flying bike.It was made last week.I think it’s really a great invention.Here is my introduction to it.It has two wheels and two wings so that we can use it to ride on the ground or fly in the sky.Besides，when we ride the bike,we can take photos or call others with it.It can not only travel very fast but also help to protect the environment and save energy.Because we use solar power to move it. It has many advantages.However,it need be improved as well.First of all,we had better add something to the bike to stop us from falling off it.In addition,it’s a good idea to set an umbrella on it to help us keep off the rain. Step 4 Self Check Give students some minutes to do the exercises in Self Check and then check the answers in class. The answers are： 1.invent;all of a sudden;doubt;websites;mention 2.（1）My watch was stolen by someone. （2）Five eggs were used to make this big cake by them. （3）When was the personal computer invented by them? （4）We were asked not to run in the hallway by them. （5）The video was taken back to the store by someone. Step 5 Summary 1.Summarize what we have learned in this lesson. 2.Revise the passive voice. 学科网（北京）股份有限公司 $$