1. Unit 2 Saving the Earth Topic 3 What can we do at home to protect the environment ? Section B

2. 学习目标 熟记本节单词及短语： ought to, shut off, electricity,distance, cloth, plastic, action ； 学习 ought to 的用法； 提升环保节能的意识，做到从身边的小 事做起。

3. 并列连词 1. 表示并列关系，常用连词 ___ ; Eg: Noise is a kind of pollution and it’s harmful to our hearing. 2. 表示转折关系，常用连词 _____ _____; Eg: He has failed several times, but he never give up. She likes math while I like English. 3. 表示选择关系，常用连词 ____ ，意为 “ 或者， 否则，要不然 ” ; Eg:Work hard, or you will fail the exam. Which colour do you like, red or green ? and butwhile or

4. Hulk

5. The man who does something to protect the environment. A greener person

6. What should you do if you want to be a greener person?

7. Listen to the tape, and answer these questions: 1.Would you like to be ________________? 2.First, you ought to ____ ____ the electricity when you ________a room; 3.Second, you’d better ____ or _________ instead of _______ or a taxi if you travel a short ________; 4.Third, take a _____ bag when you go shopping. Don’t use ______bags. a greener person shut off leave walk ride a bike taking a busdistance cloth plastic

8. Read 1a, and answer these questions ： 1.What are Jane’s suggestion? First,……….. Second,……… Third,………. 2.Why does Jane suggest that Michical had better walk or ride a bike instead of taking a bus or a taxi? Because it will save energy and reduce pollution

9. Read 1a again, find the following phrases and idioms: Phrases: 一名环保者 _____________________ 关闭, 切断，停止工作 ___________ 代替 ____________ 节约能源 _____________ 塑料袋 _______________ 最好做某事 ____________________ 最好不要做某事 __________________ Idioms: (1) Easier said than done.____________________ （ 2)Actions speak louder than words._______________ 拓展 : (3) Love me, love my dog.______________________ (4) All roads lead to Rome. ______________________ a greener person shut off instead of save energy plastic bag had better do sth had better not do sth 说起来容易做起来难 行动 / 事实胜于雄辩 爱屋及乌 条条大路通罗马

10. ought to 情态动词，无人称和时态的变化，后 接动词原形。意为 “ 应当，应该 ” 。 Eg. 我们应该保护环境。 We ____ ____ _______ the environment. We _____ ______ the environment. (should) （作为情态动词， ought to 和 should 都可以翻 译为 “ 应当，应该 ” ，一般可以互换） 肯定形式： （应该做某事） ought to protect should protect ought to do sth.

11. Eg. 我们不应该乱扔垃圾。 We ______ ____ leave rubbish here and there. We _______ leave rubbish here and there.(should) 否定形式 :________________________ （不应该做某事） Eg. We ought to protect the forests. ( 转为一般 疑问句 ) ____________________________________ 一般疑问句： ________________________ oughtn’t to shouldn’t Ought we to do protect the forests? ought not to do sth. = oughtn’t to do 将 ought 提到主语之前： ought + 主 语 + to do sth.

12. Listen to the tape again and read after it.

13. We learn: 1. Some words: action, distance, electricity 2. Some phrases: ought to, shut off 3. Some useful sentences: (1)Easier said than done. (2)actions speak louder than words. Summary

14. 六、巩固练习 ( )(1) I choose to stay at home instead of ____ to travel during the holiday. A. to go B. went C. go D.going ( )(2) You ___ keep the water running all the time, because you’re wasting water. A. ought to B. ought not C. not ought D. ought not to ( )(3) ______ the electricity to save energy when nobody is in the room. A. Shut off B. Take off C. Put on D. Turn on ( ) (4) The earth is our home, everyone ____ take care of it. A. used to B. need to C. should to D. ought to ( ) (5) You ___late for school. A. had not better to be B. had not better be C. had better not to be D. had better not be ( ) (6)---What should you do to be a greener person? ---_____________ A. Turn on the lights when I leave a room. B. Throw rubbish everywhere. C. Take a cloth bag when I go shopping. D. Use plastic bags when I go shopping. D D A D D C