约2320字。

　　Topic 2  China has the largest population.
　　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 the numbers with million and billion.
　　5. Madents realize the serious population problem.
　　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
　　Step 1  Review
　　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?