福建省南安市石井镇厚德中学九年级英语上册 Unit 2 Topic 3 What can we do to protect the environment Section C导学案（无答案）（新版）仁爱版.doc

unit 2 topic 3 what can we do to protect the environment 【学习目标】1.继续学习连词引导的复合句；2.了解现代科学技术在环保方面的作用。【预习案】一、先查1a的生词的意思，再读短文，然后给每段选出合适的图片，最后完成1b二、 在文中找到并划出下面的短语41.查这些单词 _2.understand the meanings further3.通过读短文(的方式) _4.produce power from coal_5.使用核能生产能源_6.全世界的人7.寻找新办法_8.首批国家之一_9.使用沼气技术_10.制沼气_11.动物粪便_12.在人们的日常生活中_13.在20世纪90 年代_14.花销很少_15.被广泛使用 _16.最著名的磁悬浮火车_17.达到最高时速_18.每小时431公里_19.更贵得多_20.传统铁轨_21.考虑_ 22.别的什么_23.利用水的运动_24.用太阳能发电_【探究案】 在文中划出下面的句子并分析1.some countries use nuclear energy to produce power. 译：_点拨：use sth. to do sth.=use sth. for doing sth. -使用某物做某事 练习：a.在过去人们使用竹子写字.people _ bamboo _ _ in th past. b.人们用风发电。people _ wind _ producing electricity.区别：还有一些介词也可表示“用”，如：in，by, witha. you can solve the problem in this way. 译：_ b.you can buy lots of things with the money. 译：_ c.my father goes to the office by car. 译：_2.they are very efficient and cost a little to run.译：_点拨： run-使运转，使运行练习：看，我们的新机器正运转的很好。look! our new machines _ _ _.点拨：cost a little-花销很少 花销太高-_练习：在大城市生活花销太高。_ _ _ _ to live in big cities.3.there will be an increase in electricity needs if they are widely used. 译：_点拨：increase-增加, 在此句中为_词 链接：increase by增加了 increase to增加到练习：a.明年在数量上会有所增加。there _ _ an _ in number _ _. b.每年增加800万吨。it _ _ 8 _ tons every year. c.到目前我们班已增加到了54人。the number of the students _ _ _54 so far.点拨：need-需要，在句中为_词; 此外，need还是情态动词和行为动词练习：a.没有必要每天去那。 there is _ _ to go there every day. b.do you need more money? 译：_ c.我必须马上去吗？没有必要。 _ i go there _ _? no, you _. d.如果你不舒服就不必来。you _ _ _ come if you feel sick. 同义句：you _ come if you feel sick.3. the train can reach a top speed of 431 km per hour. 译：_点拨：reach a speed of+具体速度 -达到某个速度链接：at a speed of + 具体速度-以某个速度, 可用high, low, full等形容词修饰speed 。练习：a.北京至天津线火车时速达到每小时300千米。beijing-tianjin train _ _ _ _ 300 km per hour. b.我们以每小时30英里的速度前进。we were traveling _ _ _ _thirty miles per hour.4.what else can be used to produce electricity. 译：_点拨：else 修饰不定代词，疑问代词，放在不定代词，疑问代词的后面，做后置定语点拨：can be used - 含有情态动词的被动语态 练习：a.风可以被用来发电。wind_ _ _ to _ _. b.因特网可以被用来聊天。the internet _ _ _ _ _.5. it takes people just 7minutes to go to the airport 30km away. 译：_同义句：_6.however, maglev guide paths are much more expensive than traditional steel railways.译：_点拨：形容词前可加a lot, much, far, a little ,even等词修饰；还可在形容词比较级前加表数量的词。练习：a.dont go by plane. its a lot more expensive. 译：_ b. his illness is far more serious than we thought. 译：_ c. its a little colder today than it was yesterday. 译：_ d. it was cold yesterday, but its even colder today. 译：_ e. my sister is two years younger than me. 译：_【归纳】【课后巩固】i. 汉译英1. 地球百分之七十被水覆盖。 _ the earth is covered with water. 2. 当你离开房间的时候，应当关上窗户并锁上门。 you _ close the windows and lock the door when you leave the room. 3. 如果大气被污染，就可能下酸雨。 if the air _, it may rain _. 4. 你帮我学英语真是太好了。 _ to help me with my english. 5. 睡觉占去了我们许多时间。 sleeping _ our much time.6. 他想去西湖而不去购物。 he wanted to go to the west lake _ shopping. ii. 完成下列同义句变化1. johns grandmother died ten years ago. johns grandmother has been _ _ ten years. 2. he didnt want to miss the first bus, so he got up early. he got up early _ he could catch the first bus. 3. none of the sweaters in that shop is the right size for me. the sweaters in that shop are _ too big _ too small for me.4. do remember to lock the door when you leave. _ you lock the door when you leave. 5. my sister is not old enough to join the army. my sister is _ to join the a