1. must find　　 2.is growing　 3.has become　 4are　　 5.has reached　 6.has tried

2.T: We know large population causes many difficulties. Please look at the pictures and describe the disadvantages of large population.

(多媒体或图片展示几组这样的场景:

(1)拥挤的交通(2)喧闹的商店、饭店等公共场所

(3)一批批涌动的南下的劳动大军(4)招聘会上寻职的大学生

(5)几代人居住在一起的狭小的单元房(6)水能电能短缺的报道

T: After watching them, please discuss it with your partner, and then describe them. You can do them according to 1b on page 13.

(教师走入同学中，与他们一起探讨并加以引导。)

T: Stop here please. Who can talk about them?

S1: Because of the large population, we are short of energy and water. The traffic is too heavy. I think it’s dangerous to cross the street. There are many people here and there. So doing an easy thing gets difficult. For example, buying a ticket, taking a bus...we must wait. It’s too boring.

(另一个学生站起来补充。)

S2: Because of the large population, it’s difficult for many people to find a job, every year some people will lose their jobs. In many big cities, there are few places to live in. It’s said there’s standing room only on the earth.

Step 4　 Practice　 第四步　 练习(时间:11分钟)

(老师总结，并拿出一张“地球上站满人”的图片展示给大家，为下一步学习做铺垫。)

T: You’re right and you did very well. Look at the picture; the earth has been full of people.

The population is still serious. Please listen to the tape and complete the article on page 14.

(教师播放录音，学生做2a。)

(教师提问同学完成的情况，若大部分同学不能完成，再听一遍录音。)

(教师核对答案。)

T: Let's check your answers.

Step 1　 Review　 第一步　 复习　 (时间:12分钟)

T: Yesterday I told you to write an article about the population problem. Now I’ll check your homework.

Please read your article in groups, then choose the best one and share it with us.

(学生很快会推选出优秀作品，教师选择其中一篇来读。)

(教师读学生作文，并引出新课内容。)

T: Let’s enjoy the article. I think it’s excellent.

Listen carefully. Then I’ll ask you some questions.

For example:

China has the largest population in the world. It is nearly one-fifth of the population in the world. So large population brings lots of difficulties.

(教师继续朗读学生作文。)

For example, there are too many people here and there. The traffic is too heavy.　 People have few places to live in. But luckily, China has known the serious problem. So China has come up with some ways to control the population.

(教师停顿解释，引出本课短语，让同学感知。)

“Come up with some ways” means “do something”， so this sentence can be changed into:“China has done something to control the population.”

(教师继续朗读学生作文。)

One-child policy makes the population slow down. China’s economy grows faster and people’s living conditions are improving rapidly. Most of the families can give their children a chance to have a good education.

(教师讲解，引出新词。)

“give their children a chance to have a good education” we can also say:“offer their children a good education.”

(板书)

“offer” means “give sb.sth.” or “give sth.to sb.”.

(教师继续朗读作文。)

But the population problem is still serious in China.

(教师点评:并提出几个简单问题，引导同学回答。)

T: I think it’s a wonderful article. Next I’ll ask you a few questions.

Question1: Do about one-fifth of the people in the world live in China?

(学生集体回答。)

Ss: Yes, they do.

T: Question2: The large population brings a lot of troubles, doesn’t it?

Ss: Yes, it does.

T: Question3: What does China do with the large population?

Ss: One-child policy.

T: I will give you other questions. Please think about them and discuss with your classmates.

(教师用幻灯或小黑板呈现下面问题。)

(学生讨论过后，可能会有各种各样的答案，以上命题属于开放性命题，答案不是惟一的，教师要对学生多赞扬、鼓励。)

(问题1:学生可能的回答。)

Ss: It’s a policy of our country. It can control the population.

(问题2:学生可能的回答。)

Ss: It causes the heavy traffic. It is too crowded…

(问题3:学生可能的回答。)

Ss: We must obey one?child policy and improve our living conditions…

(教师通过这些问题的讨论，引出要呈现的内容。)

Step 2　 Presentation　 第二步　 呈现　 (时间:6分钟)

T: OK, let’s listen to the tape and complete the article below.

(教师放录音，并把听力任务用幻灯片或小黑板呈现给学生。)

(学生可能第一次不能完全得到正确答案，再听一遍，然后检查答案。)

T: Let’s check your answers together.

6.5 billion; three billion; one fifth; brings; control; thanks to)

(在短文中呈现正确答案，并请一位同学朗读短文。)

Step 3　 Consolidation第三步　 巩固 (时间:10分钟)

录音机/ 幻灯片/ 多媒体/ 小黑板 /图片

4.Get students to know how serious the overpopulation problem is.

3. Talk about the problem of overpopulation.

2. Go on studying the present perfect.

1.Master some new words：

difficulty, energy, human being, trouble, less, offer

2.Homework:

All of you did this lesson actively. We have known about the population of China. Please go on discussing it in groups after class. Then write a report about the population of the future and the present. And then predict what problems it may bring out.

Section C

The main activities are 1a, 2a and 3.本课重点活动是1a, 2a和3。