九年级英语上学期Unit 1 The Changing World Topic 2 China has the largest population.（2011年6月版）

Topic 2 China has the largest population.
Section A
The main activities are 1a and 3a. 本课重点活动是1a和3a。
Ⅰ. 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, neither
2. 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) I’ve 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.
Ⅱ. 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
Ⅲ. 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。)
granny’s home bookstore
Lucy Lily
For example:
T: Hi, Lucy, I wanted to go hiking with you and your sister, Lily yesterday. You weren’t in when I called you. Where have you been
Lucy: I have been to an old granny’s home to clean rooms for her.
T: You’re 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 haven’t. 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。)
T: 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 don’t like going shopping.
T: Neither does my daughter. I mean that my daughter doesn’t 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 up
T: Most students probably like going shopping. What about Kangkang and Maria Do you want to know OK, let’s learn about it from 1a.
(板书并要求学生掌握。)
probably
2. (听1a录音，找出康康和迈克尔在购物时发生了什么事。)
T: Now let’s 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 doesn’t.
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 couldn’t find each other.
T: You’re 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. yet
S5:No, he hasn’t.
T: Where is Michael
S6:He has probably gone home.
T: Does Maria like going shopping, S7
S7:No, she doesn’t. 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 couldn’t find each other. And at last Kangkang thought that Michael had probably gone home. Kangkang doesn’t 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: I’ve 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, I’ve 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 Kangkang’s 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 let’s talk about the two pictures.
T: How many people are there in Picture One
Ss: There are three.
T: Yes. It’s a nice photo. Kangkang was so cute then. Is it a big family
Ss: No, it isn’t.
T: And it’s a nuclear family. Please look at Picture Two. Is it a big family
Ss: Yes, it is very big. And it’s an extended family.
T: It seems that their living conditions were not very good. It’s a photo of Kangkang’s father’s 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 to…It seems that…
T: Most families have only one child now. Do you know why
Ss: No, we don’t know.
T: Because China has carried out one-child policy to control the population.
(板书并要求学生掌握。)
policy
T: Because of our country’s one-child policy, great changes have taken place in China in recent years.
(板书并要求学生掌握。)
because of, recent
2. (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 up everSo do I. never Neither do my parents. already just Have/Has … done … yet It seems that… I don’t think…
Section B
The main activities are 1a and 2a. 本课重点活动是1a和2a。
Ⅰ. Teaching aims and demands 教学目标
1. Learn a new word:
increase
2. 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) —What’s the population of the U.S.A.
—It’s…
(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.
Ⅱ. Teaching aids 教具
卡片/多媒体课件/录音机/世界人口示意图/小黑板
Ⅲ. 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: Let’s have a contest to review the present perfect tense, OK
Ss: Great.
T: First, I’ll divide the whole class into two groups. Then I’ll 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. Let’s 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 haven’t 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 didn’t 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 what’s the population of China, do you know Let’s 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. What’s the population of our country
Ss: It’s 1.3 billion. (可帮助学生回答。)
(板书句型并要求学生掌握；理解billion。)
—What’s the population of China —It’s 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: What’s the population of …
S2: It’s …
S1: Is it a developing country or a developed country
S2: It’s a …
T: Well done. We have known some countries’ population. What’s the population of the world
S3: 6.5 billion.
T: Right. The world has a population of 6.5 billion. And the world’s 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 to
T: 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 let’s 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, doesn’t 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.
Country China India the U.S.A. Indonesia Brazil
Population
(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: What’s the population of China
S2: It’s about 1. 3 billion. What’s 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 let’s 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: Let’s 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。)
G1 G2 G3 G4
3. 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 let’s listen to the tape of 2b and number the pictures you hear and write down your answers. After that, let’s check the answers.
S7: Picture F The jacket costs￥326. 00.
S8: Picture B It’s about 6 575 miles from Beijing to Toronto.
S9: Picture A The mountain is 8 844. 43 meters high.
S10: Picture E The population of China was 1. 3 billion in 2007.
S11: Picture D I think the population of Canada was about 33 million in 2007.
S12: Picture C The 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 let’s discuss the question: What
are the problems of China’s 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，教师加以引导，使他们尽量用简洁的语言表达清楚。)
S1: The population is still increasing.
S2: The people in the countryside can’t obey the one-child policy.
S3: There are more and more old people in some big cities.
T: Very good. But what do you think of the future of China’s population Please discuss it.
(鼓励学生表达自己的观点。)
S4: The population of China will be about 1.5 billion in 2050.
S5: Maybe China will have a population of about 1.7 billion in 2050.
S6: Maybe the population of China will become smaller than before with the help of the
one-child policy.
(学生可能做出种种猜测。)
2. Homework:
Write a report about the population of China in the future.
板书设计：
China has the largest population.Section Bhave/has a population of It says the world has a population of 6.5 billion.increase by —What’s the population of the U.S.A. the developed/developing country —296 million. So it is.
Section C
The main activity is 1a. 本课重点活动是1a。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some new words and phrases:
difficulty, be short of, so far, take measures to do sth., percent
2. Learn some useful sentences:
(1) … and about one fifth of the people in the world live in China.
(2) … our government has taken many measures to control the population.
(3) Thanks to the policy, China is developing quickly and people’s living conditions are improving rapidly.
3. Talk about the problems the large population causes:
(1)It’s difficult for lots of people to find jobs.
(2)…, we are short of energy and water.
(3)Most cities are more crowded than before, and the traffic is much heavier.
4. Get students to know how serious the world’s population problem is.
Ⅱ. Teaching aids 教具
多媒体/图片/小黑板/录音机
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:8分钟)
教师出示一些数字和图表，复习高位数表达法，导入新课。
1. (用添加数字的方法复习高位数字，使学生由浅入深地掌握知识。操作方法：教师首先在黑板上写出一个两位数，然后逐次在前面加上一个数字，被提问的学生由基础较差的向基础较好的依次递进。)
T: I’ll write numbers like these “888 888 888, … 8 888 888 888”. Say these numbers as quickly as you can, clear
Ss: Yes.
T: 88.
S1: Eighty-eight.
T: 888.
S2: Eight hundred and eighty-eight.
T: 8 888.
S3: Eight thousand, eight hundred and eighty-eight.
…
T: 8 888 888 888.
S4: Eight billion, eight hundred and eighty-eight million, eight hundred and eighty-eight thousand, eight hundred and eighty-eight.
2. (通过多媒体展示世界各国人口图表，复习Section B中重要句型。)
T: You have mastered how to say these numbers. Now look at the chart and review what we’ve learned in Section B. What’s the population of the world
Ss: It is said that the world has a population of 6.5 billion.
T: Which country has the largest population
Ss: China has the largest population, with 1.3 billion.
T: Is the world’s population increasing now
Ss: Yes, the world’s population is increasing by 80 million every year.
T: It is really one of the biggest problems today. I think we should do something to solve this problem.
Ss: Yes.
Step 2 Presentation 第二步 呈现(时间:10分钟)
通过图片，创设语言情景，呈现部分生词、词组及分数的表达法。
1. (教师展示人才市场的图片和事先准备好的小黑板，引出1a。)
T: Boys and girls, we have known the world has a large population. Now, look at the picture and the statements about population:
（出示小黑板。）
(1) Every minute about 261 babies are born in the world.(2) The world’s population is growing faster and faster.(3) China has the largest population in the world.(4) China’s population has reached one fifth of the world’s population.
T: What do you think of the picture and the statements, boys and girls
Ss: That’s terrible!
T: Yes. The growing population will cause many difficulties. It will influence the development of the world’s economy. So far, some families still can’t offer their children a good education.
(板书单词difficulty，词组so far，要求学生掌握。)
difficult(adj.)—difficulty(n.)—difficulties(n.pl.)so far
T: Do you want to know other problems caused by the large population
Ss: Sure.
T: We are short of energy and water. Now China’s population is one fifth of the world’s population. It means it is 20 percent of the world’s population, so China has taken some measures to solve the problem. Do you know what they are
(板书one fifth，详解并要求学生掌握分数表示法；掌握单词percent，词组be short of, take measures to do sth.。)
be short ofone fifthpercenttake measures to do sth.
Ss: One is known as the one-child policy. It has worked well in controlling China’s population.
T: Thanks to the policy, China is developing quickly and people’s living conditions are improving rapidly.
(让学生读1a，然后回答1a中的两个问题，完成1a。)
Step 3 Consolidation 第三步 巩固(时间:10分钟)
利用关键词复述1a，并独立完成1b，进一步了解中国所面临的人口问题。
1. (让学生自读1a并独立完成1b，然后核对答案。)
T: Let’s look at 1b. Describe the disadvantages of China’s large population according to 1a and write them down. You have two minutes.
(两分钟后，教师核对答案。)
T: Now I will ask several students to write their answers on the blackboard.
S1: Less space to live in.
S2: Difficult to find jobs for lots of people.
S3: Short of energy and water.
S4: Most cities are more crowded.
S5: The traffic is heavier.
S6: There will be much more pollution.
S7: …
T: Your answers are wonderful.
2. (学生阅读1a的同时, 教师把关键词列在小黑板上。)
T: Boys and girls, please read 1a again and then retell it according to the key words on the small blackboard.
(教师出示小黑板。)
6. 5 million 3 billion half one fifthcause difficulties take measures to work well in living conditions seriousa long way
(首先，教师根据小黑板上的关键词复述1a作示范，然后让两位同学复述。当学生表达错误时, 教师给予纠正。当学生表达不出时, 教师或其他同学给予帮助，提高学生口语复述能力。)
Step 4 Practice 第四步 练习(时间:10分钟)
播放2a录音，完成2b。进一步了解世界和中国人口状况，强化练习现在完成时的用法。
1. (教师拿出一张”地球上站满人”的图片或将图片展示在多媒体上。让学生仔细观察, 然后播放2a录音。)
T: Now, look at the picture. The earth is full of people. Every minute about 261 babies are born in the world. That means people have to find food for about 375 840 newborn babies every day. The population problem is serious. Please listen to the tape and complete the article in 2a.
(板书并要求学生了解。)
newborn
T: Now, look at the text by yourselves. Let’s listen to the tape again and check the answers.
(让学生核对完后, 一起齐读短文。)
T: You have understood the text. Let’s do the exercises in 2b. Then we will check the answers.
(给学生一分钟, 理解2b中的五个句子, 让一位学生回答。)
2. (用现在完成时和重点词组造句，复习含有just, ever, already, yet等词的现在完成时的用法。)
T: Make some sentences using the present perfect tense with“just”, “ever”, “already”, “yet” and so on.
Step 5 Project 第五步 综合探究活动(时间:7分钟)
完成3，让学生讨论中国人口现状，尽量运用现在完成时和高位数的表达法。学生给笔友
写一封信，然后根据表格内容写一份有关世界不同城市生活状况的调查报告。
1. (让学生写一封信给他/她的笔友, 谈谈他/她对中国人口问题的看法。写的好的，可以读一小段给同学听。教师说明写信时必须注意的事项。)
T: You have known so much about the population. Now, write a letter to your pen pal about the population problem in China. The questions in 3 may help you, then I will ask some students to show their opinions.
2. Homework:
Make a survey and complete the chart, then write a survey report. You can search for information on the Internet.
City Population Road Living condition
Beijing
Tokyo
Toronto
New York
Your city
板书设计：
China has the largest population.Section Cbe short of one fifthso far difficult(adj.)-difficulty(n.)-difficulties(n.pl.)take measures to do sth. Thanks to the policy, …
Section D
The main activities are 1a and 3. 本课重点活动是1a和3。
Ⅰ. Teaching aims and demands 教学目标
1. Learn some new words and phrases:
unless, couple, a couple of, market, excellent, keep up with, relation, belong to
2. Review some useful sentences.
3. Review the present perfect tense and the use of “just”, “yet”, “already”, “ever” and “never”:
(1) have/has been to…
(2) have/has gone to…
Ⅱ. Teaching aids 教具
实物投影仪/录音机/幻灯片/3中的三幅图片
Ⅲ. Five-finger Teaching Plan 五指教学方案
Step 1 Review 第一步 复习(时间:8分钟)
通过检查学生的家庭作业来复习有关的人口问题，并对学生习作进行总结和拓展，导入新课。
1. (教师在实物投影仪上展示Section C中3的学生习作，复习上节课内容。)
China has the largest population in the world. There are about 900 million people living in the countryside. The large population causes many problems today.
For example, we are short of energy and water. Most of the cities are more crowded than before, and the traffic is much heavier. The large population has become a serious problem. Some parents in less developed areas prefer boys to girls. So they don’t offer girls a good education. In order to give people comfortable lives, China’s government has taken some measures to control the population. One is known as the one-child policy. Thanks to the policy, China is developing quickly, and people’s living conditions are improving rapidly. Our lives are becoming more and more comfortable.
2. (继续讨论学生习作，为导入新课作准备。)
T: What difficulties does the large population cause in the composition
S1: Less space to live in.
S2 : Heavy traffic.
S3: Short of energy and water.
…
Step 2 Presentation 第二步 呈现(时间:10分钟)
师生自由交流居住、生活情况，引出部分生词和词组，呈现1a。
1. (就学生习作中谈到的人口和生活质量问题展开讨论，引出城乡对比。)
T: Do you like living in a place with a large population or a small one
Ss: A small one. What about you
T: Me, too. I used to live in a small village which had less than 200 people. It had lots of tall, green trees and clean, fresh air. People’s relations were very friendly. My village was like a big family. But the only shortcoming was that I couldn’t go shopping in big stores unless I travelled for a couple of hours.
(板书并要求学生掌握单词relation和unless，词组a couple of。)
relation, unless, a couple of
S1: I heard life in the city was colourful.
T: Right. There are many big shopping centers and huge markets. Shopping is easy and pleasant there. And the public transportation is excellent, too. Buses, taxis and subways can take you to any part of the city quickly.
(板书并要求学生掌握market和excellent；了解transportation。)
market, excellent, transportation
Ss: Great! We want to live in the city now.
T: But life in the city isn’t always easy. People have to study and work hard to keep up with the quick development of modern society.
(板书并要求学生掌握。)
keep up with
2. (听1a录音，然后回答问题。)
T: Living in the countryside has lots of advantages, so does living in the city. Listen to 1a and answer my questions.
(幻灯片出示问题。)
(1)Where do Sue and Li Ming live (2)What are the differences between Sue’s life and Li Ming’s life (3)How do they feel about their living conditions
(核对答案。)
Step 3 Consolidation 第三步 巩固(时间:10分钟)
教师出示关键词，让学生复述1a，完成1b。了解中国与加拿大不同的城镇生活。
1. (读1a，填写表格，完成1b。)
T: Read 1a, fill out the form and finish 1b.
Item Population Environment Shopping Transportation People’s relation
Sue’s /Fairmont
Li Ming’s /Beijing
2. (教师展示幻灯片，让学生思考并复述1a。)
T: Now, I’ll give you two minutes to read the information on the slides and then retell 1a with the key words on them.
(几组同学复述之后，教师点评。)
T: Boys and girls, if you are allowed to choose the place where you live, do you want to live in a place with a large population or a small one I think you have different choices.
Step 4 Practice 第四步 练习(时间:10分钟)
结合师生的生活实际，创设语言情景，强化练习have been to与have gone to，及含有ever, never, already, yet等词的现在完成时态的用法并掌握一些有用的表达。
1. (通过师生情景对话，强化练习have been to与have gone to的用法。)
T: Fairmont is a beautiful mountain town. Beijing is a beautiful city. Where have you been
S1:I have never been to Fairmont. But I have ever been to Beijing.
(教师重复读never been to, ever been to。)
T: I went to Beijing three years ago. But I believe that great changes have already taken place
in Beijing these years. My husband has gone to Beijing now.
(教师重复读have already taken place, has gone to。)
(举两个例子巩固been to 与gone to的区别。)
He has gone to Beijing.I have been to Beijing.
(让学生自己用has/have been to和has/have gone to造句子。)
Example:(1) Li Ming has gone to the library. He will be back soon.
(2) Sue has been to Germany. She wants to go there again.
2. (教师播放2a录音，学生跟读。让学生运用2b中的有用的表达方式重新造句。)
T: We have learnt the useful expressions in 2b. Please make sentences with them as quickly as you can.
S2: —I really hate to go shopping.
—So do I.
S3: —It is a nice picture.
—So it is.
S4: About one fifth of the students in our class ride bikes to school.
S5: …
3. (用幻灯片出示习题，巩固2a和2b内容。)
T: We have reviewed 2a and 2b. Let’s do some exercises.
(1)—Lily doesn’t like my song.— does Lucy.A. Neither B. So C. Either(2)—I like go shopping.— do I and does Jane.A. Neither, so B. So, so C. So, neither(3) the bad weather, we can’t go shopping.A. Because of B. Thanks to C. Unless(4)Two fifths of the students girls in our class.A. be B. are C. is(5)用ever, never, just, already和yet填空。—Have you been to America —No, but Tom has returned from New York. He has seen many places ofinterest, but he hasn’t been to London . He says he has been to any city in England.
(核对答案。)
Step 5 Project 第五步 综合探究活动(时间:7分钟)
让学生调查他们的家庭类型，然后总结不同家庭类型的优点和缺点，并写一篇有关家乡人口变化情况的短文，进一步巩固现在完成时态和高位数的表达法。
1. (根据3中的三幅图片，教师做适当的解释，学生讨论并完成3中的问题1。学习belong to。)
T: Look at the different types of families in 3. Which kind of family are you in
(教师解释一下这三幅图的含义。)
T: Most of you belong to the family shown in Picture 1 or Picture 2. Now, let’s discuss which kind of family you prefer and why.
(板书并要求学生掌握。)
belong to
(给学生两分钟时间，讨论整理。让几组学生来回答。)
S1: …
S2: …
(教师在学生回答时，总结并板书一些关键词。)
big living conditions take placeone-child policy be strict with Little Emperors
2. (让学生根据黑板上的关键词写一篇小短文。)
T: Please write a short passage according to the key words on the blackboard.
3. Homework:
Write an article about your hometown in about 80 words.
板书设计:
China has the largest population.Section Dunlessa couple ofkeep up withSo do I.So it is.belong to
ever...
never…
have/has
+ done sth.
have/has
been to
gone to
ever
never
just
already
have/has not done sth. yet
have/has
have/has +done