九年级英语上学期 Unit 1 The Changing World Topic 2 China has the largest population 教案 仁爱版.doc

Topic 2 China has the largest population. Section AThe main activities are 1a and 3a. 本课重点活动是1a和3a。. Teaching aims and demands 教学目标1. Learn some new words and phrases:yet, probably, call up, European, population, recent, because of, policy, neither2. Learn some useful sentences:(1) So do I.(2) Neither do my parents.3. Go on studying the present perfect tense with “just”, “never”, “yet”, “ever” and “already”:(1) I have just called you. (2) Ive never been there before, (3) Have you found him yet?(4) Have you ever been to France?(5) China has developed a lot already.4. Talk about the population of China. . Teaching aids 教具超市购物图/录音机/多媒体课件/两张全家福照片(旧与新)/小黑板 . Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间:5分钟)创设真实情景，复习have been to和have gone to的用法，然后由“shopping center”引出本课话题。1. (教师给出提示词，并作示范问答，然后让学生自由对话。)grannys home bookstore Lucy LilyFor example:T: Hi, Lucy, I wanted to go hiking with you and your sister, Lily yesterday. You werent in when I called you. Where have you been?Lucy: I have been to an old grannys home to clean rooms for her.T: Youre so kind, then where is Lily?Lucy: She has gone to the bookstore.(教师给出更多的提示词，其中必须有“shopping center”)S1: S2: 2. (然后教师问学生Have you ever been to a shopping center? 过渡到1a话题。)Step 2 Presentation 第二步 呈现(时间:12分钟)通过师生问答，引出含有just, ever, never, already, yet等词的现在完成时，让学生学习并掌握。1. (教师出示一张超市购物图，通过询问学生是否曾去购物，引入本课话题。)T:Look at this picture. What is it?Ss:It is a shopping center/supermarket. T:(指向一位学生)Have you ever been to a shopping center/supermarket?S1:Yes, I have.T:Oh, you have ever been there. But, have you ever been to a shopping center/supermarket with your parents?S1:No, I havent. I have never been there with them. (可帮助学生回答。)(板书并解释ever, never，让学生跟读并掌握。) ever. neverhave/hasT:I think most of you have ever been to a shopping center. Do you like going shopping, S2?S2: Yes, I do.T:So do I. I mean that I like going shopping, too. What about you, S3? (找一名平时不太喜欢购物的同学来问。)S3:I dont like going shopping.T:Neither does my daughter. I mean that my daughter doesnt like going shopping, either. Last week, my daughter went shopping with me. There were so many people in the street that she got lost.Ss:Did you find her at last?T:Yes. My husband called me up when I was worried. He told me she had already got home.(边叙述边板书上述画线部分，教师作适当讲解，并要求学生掌握neither。)So do I.Neither does My daughter.have/has already+done sth.call upT:Most students probably like going shopping. What about Kangkang and Maria? Do you want to know? OK, lets learn about it from 1a. (板书并要求学生掌握。)probably2. (听1a录音，找出康康和迈克尔在购物时发生了什么事。)T:Now lets listen to the tape, and find out what has happened to Kangkang and Michael. (核对答案。)3. (让学生读1a，回答问题。)T:Now please read the dialog in 1a by yourselves. Then answer my questions.T: Where has Kangkang just been?Ss:He has just been to a shopping center with Michael. T: Has Kangkang been there before?Ss:No, he has never been there before. T: Does he want to go there again?Ss:No, he doesnt.T: Now, I will ask one of you to give an answer. Why does he hate to go shopping?(提问一个学生。)S4:Because there were too many people. They got lost and couldnt find each other. T: Youre right. Has Kangkang found Michael yet?(板书并讲解yet在现在完成时的疑问句和否定句中的含义，要求学生掌握。)have/has done sth. yetS5:No, he hasnt. T: Where is Michael?S6:He has probably gone home.T: Does Maria like going shopping, S7?S7:No, she doesnt. She hates to go shopping, too. Step 3 Consolidation 第三步 巩固(时间:10分钟)用表演、复述等形式来巩固1a内容，然后通过对话练习巩固含有just, already, yet, ever, never等词的现在完成时，并完成1b和2。1. (再听1a录音并跟读，然后完成1b，并核对答案。)T: Now listen to 1a again and then follow it. Finish 1b and then check the answers.2. (两人一组，朗读1a并表演。)T: Work in pairs. Read 1a and act it out.3. (学生根据1a的重点，把对话改写成一篇短文并复述。)T: According to the main sentences, please change the dialog into a short passage. For example:Michael and Kangkang have just been to a shopping center. Kangkang has never been there before. In the shopping center, there were too many people. They got lost and couldnt find each other. And at last Kangkang thought that Michael had probably gone home. Kangkang doesnt want to go shopping again. 4. (1)(让学生独立完成2，掌握just, already, yet, ever, never在现在完成时中的用法及含义。)T: Ive never been to any European countries. But Michael has been there. Do you want to know more about him? Please finish 2. Then check the answers together. (板书并要求学生掌握。)European(2)(完成2后，练习2并编一个相似对话，巩固练习just, already, yet, ever, never等词的用法。)T: Make up a similar dialog with just, already, yet, ever, and never.A: Have you been to Egypt?B: No, Ive been to any African countries. But Mike has come back from Egypt. He likes it very much. He says he has seen such a beautiful country before.A: Have you seen him ?B: Yes, I have seen him .Step 4 Practice 第四步 练习(时间:12分钟)继续谈论Kangkang不愿意去购物中心的原因，引出并谈论中国的人口变化，呈现3a中的生词、短语和重点语言项目，然后完成3b，巩固3a内容。T:Why does Kangkang hate to go shopping?Ss:Because there are too many people.T:Yes. There are so many people in China. By the way, S1, how many people are there in your family?S1:Three, my father, my mother and I.T:When I was a child, most families in our country had at least three or four children. Now, here are two pictures of Kangkangs family. Look carefully and find out the differences between them.1. (把事先准备好的两张康康家的照片，用多媒体展示在大屏幕上。)(播放3a录音，让学生听一遍课文。然后与学生一起讨论，引出3a。)T:Now lets talk about the two pictures.T:How many people are there in Picture One?Ss:There are three. T:Yes. Its a nice photo. Kangkang was so cute then. Is it a big family?Ss:No, it isnt.T:And its a nuclear family. Please look at Picture Two. Is it a big family?Ss:Yes, it is very big. And its an extended family.T:It seems that their living conditions were not very good. Its a photo of Kangkangs fathers family. At that time, most families in our country had at least three or four children. China had the largest population in the world. (教师板书It seems that，要求学生掌握此句型，并注意和seem to的转换联系。板书并要求学生掌握population。)populationseem toIt seems thatT: Most families have only one child now. Do you know why?Ss: No, we dont know. T: Because China has carried out one-child policy to control the population.(板书并要求学生掌握。)policyT: Because of our countrys one-child policy, great changes have taken place in China in recent years.(板书并要求学生掌握。)because of, recent2. (让学生阅读3a，画出同3b中所给例句意思相似的句子，完成3b。)T: Read 3a and underline the sentences which have similar meanings as the sentences below. 3. (让学生听3a录音并跟读。)T:Listen to 3a and follow it.Step 5 Project 第五步 综合探究活动(时间:6分钟)给出一些有关人口的话题，让学生分组讨论，然后写出一篇汇报或作文，尽量用上含有just, already, yet, never, ever等词的现在完成时。让学生尽可能多地了解我国的人口现状，为下一课作准备。1. (教师用小黑板呈现本课出现的主要话题。) T: Please discuss these topics:（出示小黑板。）(1) The population problem(2) One-child policy(3) Little Emperors(学生自己选一个话题，两人一组进行讨论。讨论完毕，选几组做汇报。鼓励学生发表自己的见解，尊重学生的个性发展，并体现激励机制。)Example:Boys and girls,We have just learned something about the population of China. Have you ever thought about it before? Before this class, I think most of you have already known something about it. 2. Homework: (1) Choose one of the topics above. Talk about it and write a composition. (2) Make five sentences. Use the present perfect tense with the words “just”, “already”, “yet”, “ever”, “never”.板书设计：China has the largest population.Section Acall upever+ done sth.So do I.have/hasnever Neither do my parents. already justHave/Has done yet?It seems thatI dont thinkSection BThe 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 a new word: increase2. Learn some useful sentences: (1) It says the world has a population of 6.5 billion. (2) It is increasing by 80 million every year.(3) Which country has the largest population? (4) Whats the population of the U.S.A.?Its (5) So it is. (6) The population problem is more serious in developing countries.3. Go on learning the present perfect tense. China has already carried out the one-child policy to control the population. 4. Go on learning to express the numbers with million and billion.5. Make students realize the serious population problem and have social conscience. Teaching aids 教具卡片/多媒体课件/录音机/世界人口示意图/小黑板. Five-finger Teaching Plan 五指教学方案Step 1 Review 第一步 复习(时间:8分钟)复习现在完成时，然后引导学生谈论过去人们生活条件差的原因，引出人口问题，导入新课。1. (小竞赛。教师把学生分为两组。然后出示写有already, yet, ever, never, just的卡片，要求学生以抢答形式迅速说出含有卡片上词的句子，要求用现在完成时。迅速且正确者赢一分，评出获胜组。)T: Lets have a contest to review the present perfect tense, OK?Ss: Great.T: First, Ill divide the whole class into two groups. Then Ill show the cards with “already”, “yet”, “ever”, “never” and “just” one by one. Your team will get a score if you give me a correct sentence with the word on the card. Lets go!(教师出示写有already的卡片。)T: “Already”, please!Group 1: She has already finished her homework.T: Congratulations. “Yet”, please!Group 1: I havent watered the flowers yet.T: Congratulations. Group 2. “Ever”, please!Group 2: Has your sister ever been to Tibet?2. (教师让一名学生复述Section A中3a的内容，引出人口问题。)T: Who can retell 3a in Section A?S1: I can.(学生复述课文。)T:Well done. Can you tell me why their living conditions didnt seem to be very good in the past, S1?S1: Because the family members in the past were more than those nowadays.S2:Because of the large population.S3:China was not well developed.T:Right. But whats the population of China, do you know? Lets learn about it from 1a in Section B.Step 2 Presentation 第二步 呈现(时间:14分钟)用多媒体呈现图表，谈论中国及世界人口，呈现1a中重点句型及部分生词。1. (多媒体展示1b中图表。) T:Here is a chart about some countries population. Whats the population of our country? Ss:Its 1.3 billion. (可帮助学生回答。) (板书句型并要求学生掌握；理解billion。)Whats the population of China?Its 1.3 billion. T:Is China a developing country or a developed country? Ss:A developing country. (板书并讲解。)the developing/developed country T: Good. Now please talk about other countries population in pairs. (教师可先做示范，然后让学生进行练习。) S1:Whats the population of ? S2:Its S1:Is it a developing country or a developed country? S2:Its a T:Well done. We have known some countries population. Whats the population of the world?S3:6.5 billion.T:Right. The world has a population of 6.5 billion. And the worlds population is increasing by 80 million every year.(板书单词increase及短语has a population of，并要求学生掌握，延伸讲解increase by和increase to的区别。)has a population ofincreaseincrease byincrease toT:Look at the chart, which countries have the larger population, the developing countries or the developed countries?Ss:The developing countries. And the population in developing countries is growing faster.T:So it is.(板书So it is，讲解“so+代词/名词+助动词/be动词/情态动词”结构，并和“so+助动词/be动词/情态动词+代词/名词”的结构进行区分。)So it is.T:In order to solve the population problem, what policy does China carry out?Ss: One-child policy. T:Yes. Now lets listen to 1a and learn more about it.2. (教师放1a录音，让学生听并尽可能地写出对话中的有关数字。) T:Close your books, listen to the tape and try your best to write down the numbers you hear. (教师再放录音，让学生核对写的情况。) T:Open your books. Listen again and check what you have written. (让学生朗读1a，师生共同解决疑难点。) T:Read 1a and pay attention to the following sentences.(教师板书并讲解这三个句子，使学生加深对文章的理解。)(1) And it is increasing by 80 million every year.(2) It shows that the population in developing countries is larger than that in developedcountries, doesnt it?(3) China has already carried out the one-child policy to control the population.Step 3 Consolidation 第三步 巩固(时间:8分钟)根据1b绘制表格(教师可适当增加一些其他国家的人口)，学生通过对话及复述，巩固1a内容。1. (让学生完成表格并进行链式问答。)T:Look at the form. Then fill it out. CountryChinaIndiathe U.S.A.IndonesiaBrazilPopulation(核对答案。)T:Great. I think you all have done well. (学生两人一组进行问答练习。)S1:Whats the population of China?S2:Its about 1. 3 billion. Whats the population of India?S1:It is about 1. 1 billion. What about the U.S.A.?S2:2. (让学生试着复述1a内容。)S3:The world has a population of 6.5 billion.S4:China has the largest population, with 1.3 billion.S5:The population in developing countries is growing faster.T:OK. I think you have mastered the dialog. You can practice it by yourselves after class. Step 4 Practice 第四步 练习(时间:10分钟)通过复习千以内的数字，引出高位数字的读法，完成2a，2b。1. (教师出示写有数字的小黑板。)T: We have learnt about many countries population. Do you know how to express large numbers? First lets look at the blackboard. (板书)218 306 5 366(教师由以前学的百、千引入百万、十亿。)S1:Two hundred and eighteen.S2:Three hundred and six.S3: Five thousand, three hundred and sixty-six.(教师总结数字的读法，指出易出错的地方并要求学生注意。)T: Now, look at these numbers. Can you read these numbers?(板书)736 547 8 736 062 7 198 764 501 (教师先讲解三位一划分原则，再让学生运用。给学生准备时间，然后提问。) S4: 736 547 seven hundred and thirty-six thousand, five hundred and forty-seven. (让较好的学生总结数字的读法。教师强调and, -, thousand放的位置，以及注意此处量词不加“s”。) T:Now, I will ask some other students to read the numbers. S5:8 736 062 eight million, seven hundred and thirty-six thousand and sixty-two. S6:7 198 764 501 seven billion, one hundred and ninety-eight million, seven hundred and sixty-four thousand, five hundred and one. T:You are great. Most of you have mastered how to read the numbers. Please look at the numbers in 2a. Read them together.2. (做游戏，巩固数字的读法。)T:Lets play a number game. I will show you some numbers. Read them quickly and correctly in groups. (每个小组各选派三位学生，由教师统计分数，构建评分机制，激发学生兴趣。)(板书)7 398 500 406 000 000 17 602 018 000 676 302 320 (教师在黑板上画出计分表。)G1G2G3G43. T: Look at the pictures of 2b and describe them. (让学生通过自己的猜测，用所学过的语言知识把图片描述一下。教师可以先提问，复习高位数字的读法并把新旧知识结合起来。)T: Yeah, very good. Now lets listen to the tape of 2b and number the pictures you hear and write down your answers. After that, lets check the answers. S7:Picture FThe jacket costs￥326. 00. S8:Picture BIts about 6 575 miles from Beijing to Toronto. S9: Picture AThe mountain is 8 844. 43 meters high. S10: Picture EThe population of China was 1. 3 billion in 2007. S11: Picture DI think the population of Canada was about 33 million in 2007. S12: Picture CThe dinosaur lived 210 million years ago. (核对答案。)Step 5 Project 第五步 综合探究活动(时间:5分钟)让学生讨论中国现在和将来的人口状况及可能出现的问题，巩固高位数表达法，并根据讨论内容写一篇报告，为下一节课做准备。1. T: The population problem is the biggest one in China. Now lets discuss the question: What are the problems of Chinas population?(学生小组讨论。)T:Who can talk about them?(学生可能要说的很多，但有些语言他们表达不清楚，教师加以引