九年级英语Unit1 Topic2 Section B仁爱版t.doc

Unit1 Topic2 Section B 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.Master some new words and useful expressions： increase, rise, medical, medical care 2.Go on learning the present perfect： (1) The population has increased a lot. (2) Chinese medical care has improved because our country has developed a lot. 3.Learn how to read the numbers. Ⅱ.Teaching aids教具 录音机/多媒体课件/幻灯片/小黑板 Ⅲ.Five -finger Teaching Plan五指教学方案 Step 1 Review 第一步 复习 （时间:14分钟） ? 1.检查上节课教师布置的探究性作业，组织学生互评，教师选出若干份点评。） T: S1, you did well. S2, excellent… 2. (英语老师转换角色，当一次地理老师。) T: Today I’m not your English teacher. I’m your geography teacher. I believe we will be happy in the English-geography class. In this lesson we will learn something about the population of China. We know China has the largest population in the world(多媒体展示中国部分城市人口过多现象以及人口普查图表。). In 2005, China’s population was 1.3 billion. (板书) 1.3 billion: one point three billion (教师再板书两组小数，教会学生怎样去读。) 5.68: five point six eight 14.05: fourteen point o five （小数点后的“零”可读作“o”,也可读作“zero”。） T: Let’s read the numbers below. Try to read them quickly and correctly. (教师迅速在黑板上写出几组数字，用后擦去。) 0.08 billion 9.17 miles ￥258.00 452.73meters 10.78 million (学生会积极去读出这些数字，可让小组进行，然后个别提问。) S3: zero (naught) point zero (naught) eight billion S4: nine point one seven miles S5: two hundred and fifty-eight yuan S6: four hundred and fifty-two point seven three meters S7: ten point seven eight million T: OK. You did very well. Do you know what the population was in 1985? (有的同学可能知道，有的同学可能不知道，但大家可能会纷纷做出猜测。) S8: One point one billion. S9: One point two...billion. T: Stop here. Your answers are nearly right. The population of China in 1985 was 1.06 billion. Why has the population of China increased so quickly? Because the lifespan has risen. （板书rise及其过去式和过去分词。） rise rose risen T: “Rise” means “increase quickly”. Why has the lifespan risen? Let me tell you. Chinese medical care has improved because our country’s economy has develop