内蒙古巴彦淖尔市乌中旗二中九年级英语上册《Unit 2 Saving the Earth Topic 2 All these problems are very serious.Section B》学案（无答案） 仁爱湘教版.doc

九年级英语上册unit 2 saving the earth topic 2 all these problems are very serious.section b学案（无答案）教师寄语；理想是指路明灯。没有理想，就没有坚定的方向；没有方向，就没有生活。 【学习目标】：（课前预习） 1. 熟记本节单词（并写出汉语）:sand- sandstorm- desert- prevent-although- law- tap- 2. 学习和掌握短语：(读1a 和1c找出下列短语，并理解课文意思。) 1a: 1）_ 猛烈地刮 2）walk down/along _3）_ 刚刚，片刻之前, 4）cut down _5）rich land _ 6）_ 转变成1c: 7)come into being_ 8) pass laws_ 9)_关掉/turn on_ 10) different ways of saving water ._3. 继续学习不定代词和不定副词的用法。4. 谈论森林和水资源的重要性，培养环保意识。5. 根据首字母提示完成短文。trees are very useful to us. they can help us p_ the wind from blowing the earth away and stop the s_ from moving towards the rich land. trees also s_ water from running away. they can keep a great d_ of water. so we must stop people from c_ down too many trees. otherwise a lot of rich land will change into d_, l_ only sand. we must get rid of (摆脱) this kind of bad b_.【语言点导学】： 2. stop/prevent/keep sb from doing sth 阻止.做某事。blow away_ run away_ eg; trees can stop the wind from blowing the earth away. they can also prevent the water from washing the earth away. 译：_3. although we have built the great green wall, we still need to work hard to protect the environment. 译：_although 连词，表“虽然； 尽管”，引导让步状语从句，相当于though 但比though正式。不能与but同时连用。如：_ the question is difficult, he can still answer it.尽管这个问题很难，他仍能回答上它。【学习重难点】：掌握不定代词和不定副词的用法。【课堂活动】:【预习检测】：根据首字母或汉语提示补全单词，完成句子。【自主探究】：1. 听录音，回答问题：1) what behavior may cause sandstorms? _2) what can keep water from running away? _2. 读1a的对话，找出不懂的词或句子并记录下来。3. 自读1a对话，并完成1b。组内交流，并展示答案。4. 组内合作，完成1c，交流答案。5. 谈论保护和节约用水的方法，完成2。1. the farmer _ a lot of trees and built a new house.a. cut down b. cut off c. turned down d. turned off2 _ sunny weather! lets go out and play. a. how b. how a c. what d. what a 3. parents should prevent the children from _ medicine by themselves. a. taking b. to take c. took d. taken 4. smoking is harmful _ our health. a. to b. for c. in d. with 5. my