unit 2 topic 2 all these problems are very serious 学案7（仁爱版九年级上）

Unit 2 Saving the earth.Topic 2 All these problems are very serious.Section B【学习目标】谈论森林和水资源的重要性，培养学生的环保意识。【预习案】一、 读1a，回答1b.二、 在文中找到并划出下面的短语 1.刮大风_ 2.刚才_3.结果_ 4.变成沙漠_5.阻止大风刮走泥土_ 6.阻止流水冲走泥土_7.绿色长城_ 8.形成 _9.颁布法律_ 10.记得去关水龙头_11.循环利用废水 _ 【探究案】 在文中划出下面的句子并分析 1.What bad weather! What引导的感叹句a. What+形容词+不可数名词/可数名词复数！b. What+ a/an+形容词+可数名词单数！2.点拨：change into（把变成）= turn into3.点拨：stop sb./sth. (from) doing sth. = prevent sb./sth. (from) doing sth. 阻止做某事 (from可以省略) 链接：同义词组 keep sb./sth. from doing sth. - 阻止做某事（from不能省略）5.Although=though although 引导的从句不能与but, however同时连用，但常与yet, still 连用。4. Remember to turn the tap off when you leave. 点拨：remember to do sth. 记着做了某事（事情还没做）remember doing sth. 记得做过某事（事情已做）点拨：turn off 关上（灯、水龙头、电器等） 链接：打开_开大 _关小_【归纳】I. 单项选择（ ）1. Eating too much is _ to your health. A. useful B. helpful C. harmful D. wonderful ( ) 2. Parents should prevent the children _ taking medicine by themselves A. about B. with C. from D. of ( ) 3. _ we were quite tired, _ we still went on working. A. Although ; / B. Because ; / C. Because ; so D. Although ; but ( ) 4. The farmer _ a lot of trees and built a new house. A. cut down B. cut off C. turned down D. turned off ( )5. My hometown has changed _ a new one in the last three years. A. in B. to C. with D. intoII. 汉译英1. 你能就怎样才能学好英语给我们提些建议吗？ Can you _on how to learn English well?2. 我们必须为保护我们的环境做些有用的事情。 We must _ our environment.3. 由于空气污染，城里许多人的健康状况很差。 Many people _ for the air pollution. 4. 我们应该关心那些处于困境中的人们。 We should _ the people _. 5. 在我们的城市里，学多教学楼正在兴建。 In our city, many teaching buildings _. 6. 如果人人都为保护环境作出贡献，一百年后我们这个世界会是什么样子呢？ If everyone makes a contribution to protecting the environment, what _in a hundred years?III. 按要求变化下列各句1. Bill and Tony both like swimming. （改为同义句） _ Bill _ Tony like swimming.2. You ought to finish the work today. （改为否定句） You _ finish the work today.3. There is something wrong with my computer. （改为否定句） There _ wrong with my computer. 4. Reading on the bus is bad for your eyes. （改为同义句） It is _ for your eyes _ on the bus. 5. “Dont open the door!” My mother said. （改为间接引语） My mother _ me _ open the door.