九年级英语ThepopulationindevelopingcountriesisgrowingfasterSectionB2_3导学案.docx

The Changing World教师寄语：Do not, for one repulse, give up the purpose that you resolved to effect. (不要只因一次失败,就放弃你原来决心想达到的目的。)Class_ Grade9 Group_ Name_课型：预习+展示课Title: Unit 1 The Changing World (变化中的世界)Topic 2：The population in developing countries is growing faster.(发展中国家的人口增长更快。)Section: B 2-3 (P12) 第二课时Learning steps (学习过程): 一、抽测反馈 （Check before class）（5）(我会做)1、根据首字母提示，完成句子。 1)What a large p_! 2)And it is i_ by 80 m_ every year. 3)L_, China has already carried out the one-child p_ to control the population. 4) It has already r _ 1.3 b_.二、学习目标 （Learning target）（1） 1、学习千位数以上的基数词的表达法；2、学习人口的相关表达。学习重点 难点 掌握千位数以上的基数词的表达法。三、自主学习 （Self-study）（20）（我最棒）1、用英语读出下列数字。 1)10_ 2) 100_ 3)1000 _ 4) 1,000,000 _ 5) 1,000,000,000_ 6) 3.14_7)999_2、听P12/2的录音读数字，要特别注意语调，然后和你的同伴一起读别的数字。 How to read numbers ？（怎样读数字？）【牢记方法】1）首先，把数字从右往左分成三个一组，然后按照从十亿到百万和千的顺序来读。2) 千位数字以上的基数词的表示：以三位数字为单位，从后向前用逗号依次隔开，第一个逗号用thousand表示，第二个逗号用million,第三个逗号用billion来表示。逗号之间的数字按百位数的表达法来表示。如：12 187 690 780 ：twelve billion, one hundred and eight-seven million, six hundred and ninety thousand , seven hundred and eighty3)朗读多位英文数字时，总是最后一个数读降调，它前面的位数均读升调。如：543.7 five hundred and forty-three point seven 3、练习读下面的数字看谁读的又快又对。 768 540 2 346 780 405 000 000 8 888 888 888四展示提升 （Lets show and improve ）（15）（我参与） 1、分组练习3 ，讨论世界人口。然后回答下面的问题：(The population of the world :6.8 billion.=The world has a population of 6.8 billion. The population is increasing by 80 million every year. What a large population! )1) Which of these 5 countries has the largest/smallest population? Whats the population of it?_2) What can you tell from the population in developing countries and in developed countries?_3) What problems does the large population cause?_4) What measures do you think should be taken to control the population?_点拨 take measures to do sth. 采取措施做某事。五 梳理巩固 （Summary ）（4）（我能行）1、熟记本课所学的千位数以上的基数词的表达法。2、整理导学案，梳理本节课所学的知识，检查导学案并完成导学案上所有内容,学习组长注意检查督促。六检测达标 （Test in the end ） (5)（我会做）1、单项选择。( )1) -_the population of Russia ? - 143million. A. How much is B. How many is C. What is D. What are( )2) The population of this city has increased _twenty percent(百分之)in the past ten years. Ato B. for C. by D. on( )3) The bridge is _meter long.A. nine thousand eight hundreds and forty eightB. nine thousands eight hundred and forty eightC. nine thousands eight hundreds and forty eightD. nine thousand eight hundred and forty eight( )4) The weather in China is different from_ in Australia.A. that B. one C. it D. /2、用英语读出下列数字。1) 973 _2) 3 980_3) 98 721 _4) 504 000 000 _5)5 555 555 555 _6) 218.5_【提高题】补全对话。(A.B层次学生做) A: Excuse me .Could I ask you some questions ? B: Certainly .A: Whats the population 1 the world ?B: Its about 6.8 2 .A: Which country has the 3 population ?B: China .Of course . A:What about India?B: The population of India is 4 than that of China .India