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1、 I. 学习目标： 1. 学习用ought to 提建设 2. 从边的小事做起,做一个环保人.II. 预 习 一. 短语积累(P43, 1a, P44,2a) 1. 环保使者_- 2 . 关灯_ 3. 短途旅行_ 4. 节约能源_ 5. 减少空气污染_ 6. 参加活动_ 7. 准时/按时 _ 及时_ 8. 早上的工作 _ 9. 垃圾分类 _ 10. 许多艰难的工作 _ 11.说起来容易做起来难 _ 12.行动胜于言词 _二. 句子积累 (P43, 1a P44,2a) 13. 你想成为一个环保者吗？_ 14. 当你离开房间的时候，应当随手关灯。_ 15. 如果你短途旅行，最好步行或者骑车而不是
2、乘公共汽车或出租车。_ 16.不买一次性杯子或盒子._3. 读P43,1a,回答问题 17.What are Janes suggestions? _ 18.Why does Jane suggest that Michael had better walk or ride a bike instead of taking a bus or a taxi? _III. 知识链接 ought 意为“应该”，是情态动词，没有人称和数的变化，后接动词不定式。 一、ought to具体用法如下： 1. (表示义务、责任等) 应当, 应该 e.g. You ought to work harder th
3、an that. 2. (表示劝告、建议等) 应该, e.g. You dont look well. You ought to go to see the doctor. 3. (表示猜测、期望) 总应该，理应 e.g. It ought to be a fine day tomorrow morning. 4. “ought to + have + 过去分词”表示过去应做某事而实际未做 You ought to have told me that (but you didnt). 这时ought to和should可以互换使用。 二、ought to的否定式和疑问式 1. ought to
4、的否定形式是ought后直接加not构成，其否定形式可缩写为oughtnt。 One ought not (oughtnt) to cross the street against the red light. 2. ought to的疑问式是将ought提到句首构成。 Ought we to do it at once? Yes, you ought to. 在反意疑问句里，下面两种形式都可以：He ought to be here now, shouldnt (oughtnt) he?三、should与ought to表示“应该”时的区别： should表示自己的主观看法，而ought t
5、o语气重，含有“按道理应该.之意”，如要反映客观情况或涉及法律义务和规定时一般用ought to。2. on time 按时/ 准时 e.g Please finish your homework on time in time 及时/ 来得及 e.g. Please get to the station in time, or well miss the train.3. make sure +从句, 确信., 确定. make sure of.弄清楚. e.g. Make sure you have had breakfast when you go to school IV.课堂练习 1
6、. 从方框中选词填空.on time , ought to, turn off., instead of, take part in1 .Please remember to _ the lights when you leave your room.2.Therell be a sports meet in our school next month and I want to _ it.3.We must go to school _ every day.4.We _ protect our environment.5.I often walk to work _ going by bus
7、.二. 单项选择.( )- 6.- We will go hiking, would you like to _ us? - No, I ll _ swimming. A. join; take part in B. take part in ; take part in C. join:join D.take part in; join( ) 7.- What _ I to say to him? - Tell him to save water. A.shall B. will C. should D.ought( ) 8.-Remember _TV before you leave ho
8、me. - OK, I will. A. to turn on B. to turn down C. to turn off D. to turn up( )9.- Would you like to have _ to drink now? -No, thanks. A. anything cool B cool something . C. something cool D cool anything.( )10._ no one finds out about this. A.make sure of B.make C.make sure D be sure of 4. 阅读理解 Whe
9、n people talk about air pollution, they are usually thinking about outdoor air 11 . But do you know that there is also air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say t
10、hat 50% of illnesses have 12 to do with polluted indoor air.A lot of pollution comes from indoor activities 13 smoking and cooking. As most people 14 about 80%-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.Air pollution influences our health 15 . Whe
11、n the air is polluted, not only young children and old people 16 from it, 17 people with health problems suffer as well. Indoor air pollution can 18 peoples eyes, noses and throats. Air pollution, both indoor and outdoor, can also 19 to lung cancer and heart disease! In the great London fog in 1952,
12、 4, 000 people died in a few days 20 the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!( ) 11.A.pollutionB.polluteC.pollutingD.polluted( ) 12.A.nothingB. everythingC.somethingD.anything( ) 13.A.as well asB.such asC.instead ofD.so as( ) 14.A.takeB.costC.spendD.give( )15.A.in many waysB.in many thingsC.in many housesD.in many years( ) 16.A.endureB.bearC.standD.suffer( ) 17.A.andB.butC.orD.while( ) 18.A.hitB.hurtC.pollutD.beat( ) 19.A.causeB.getC.giveD.lead( ) 20.A.because ofB.thanks toC.related toD.because
