摘要： (教师让一学生复述Section A 3a内容.引出人口问题.) T: Who can retell 3a in Section A? S1: I can. T: Well done. Can you tell me why their living conditions didn’t seem to be very good, S1­? S1: Because the family members in the old picture were more than those in the new picture. T: Yes. What will happen if our country has a larger population? S2: It will be hard to improve our living conditions. T: Now, what’s the population of our country? S3: China has a population of 1.3 billion. It’s the largest population in the world. T: The U.S.A. is the most developed country. What’s the population of the U. S. A. ? the developed/developing country S3: It’s about 250 million. S4: I think it is about 300 million. T: Let’s look at the multimedia. (看多媒体.展示1b中图表.) T: Here is a chart about some countries’ population. Look at the U.S.A. The U.S.A. has a population of 302 million. Now look again. Tell me Indonesia’s and Brazil’s population. S5: The population of Indonesia is 245 million. S6: Brazil has a population of 188 million. T: Well done. We have known some countries’ population. What’s the population of the world? S7: I don’t know. S8: The world has a population of 6.6 billion. (要求学生掌握词组have a population of.) T: Right. There are 6.6 billion people in the world. And the world’s population is increasing by 80 million every year. (教师板书单词increase.要求掌握increase.延伸讲解increase by和increase to的区别) increase T: Look at the chart, the population in developing countries is larger than that in developed countries. Ss: 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.) T: In order to solve the population problem, what policy does China carry out? Ss: One-child policy. (教师放1a录音.让学生找出含数词的句子.) T: Open your books. Listen to the tape carefully and underline the sentences including numbers. (教师再播放一遍.让学生在含有数字的句子下面画线.) T: Look at your books. Pay attention to these sentences. -What’s the population of the U. S. A.? -It’s 302 million. (教师重点解释这个句型.让学生说出更多的句子.) S1: What’s the population of China/India-? S2: It’s about 1. 3 billion/1.1 billion- (板书单词.要求学生理解.) billion (教师利用世界人口示意图.让学生一问一答.) A: What’s the population of Brazil? B: It is about 188 million. What’s the population of China/ -? A: - T: Good job. Please read the dialog and discuss the key 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 developed countries, 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 (根据1b.让学生完成表格.) T: Look at the form. Then fill it out. Country China India the U.S.A. Indonesia Brazil Population (本表格很简单.一分钟后.老师叫几位学生核对答案.) T: Great. I think you all did 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: - (以比较快的速度来完成训练.) 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

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