教师板书:① What things can harm the environment ?②What do you think we should do to improve our environment ?
T: There is much pollution all over the world now . Can you tell me what it is ?
Ss: Water pollution ； Air pollution； Noise pollution；soil pollution …etc.
T: Do you know what causes water pollution ?
Ss: Factories pour waste water into rivers and lakes .
T: All the factories ?
Ss: No .
T: What factories ?
Ss: Paper factories , printing and dyeing mills , plastic factories…ect.
T: What else can cause water pollution ,too?
Ss: Some people throw rubbish into rivers and lakes .
2 . 让学生们分组讨论解决水污染的办法。
T: How can we help to solve this problem ?
Ss: We can advise the directors of these factories to stop pouring waste water into rivers and lakes .
T: If they don’t accept your advice ,what else can we do ?
Ss:①We can write a letter to Green China about it .
② We can also ask newspaper reporters and TV station reporters to report these factories .
T: There is a paper factory in my hometown .It pours waste water into the river every day . The people in the town drink the water of the river every day . They have advise the leader to stop pouring waste water into the river many times .But he never accepts it . Can you write a letter about it to the Green China ?
T: You have told me what causes water pollution and how to solve this problem .You’re very clever .Thank you very much .But can you tell me what causes air pollution ?
Ss: The smoke of factories ,the smoke given out by buses ,cars ,trucks ,motorbikes …ect.
T:There aren’t many factories in our city .But the air is not good enough .Why ?
Ss: Because there is much traffic .
T: Can you think out a way to solve this problem?
4.学生们分组讨论空气污染的解决方案Ss: ①.We can plant more trees on roads .
②.We can ask people not to drive their cars to work .
③We can ask people to ride bikes to work .
④.We can tell people riding bikes is good for their health . ……，（基础差的同学也纷纷参与，只不过在用中文说；基础好的同学在帮他们翻译。
T: If their homes are far away from their workplaces ,can they ride bikes to work ?
T: How can we solve it ?
Ss: We can ask the leader of the city to develop the public traffic. Such as adding more buses ,building underground . …ect.
T: We have thought out many methods to improve our environment .I will try my best to tell our government that something must be done to make our city more beautiful .
T:Have you ever made any pollution ?
Ss: Yes .
T: Can you tell me something about it ?
Ss: Yes .
S1: I sometimes spit in public places .
S2: I sometimes draw on public walls .
S3: I cut down a small tree in my school in Grade One .I feel very sorry now .
S4: We sometimes throw litter on the ground in and out of our classroom .
S5: I often don’t pick up rubbish in public places .
T: Will you spit in public places from now on ?
T: Will you draw on public walls any more?
T: Will you cut down trees in the future ?
T: Will you throw rubbish in public places?
We must try our best to make our city （our country） the most beautiful one in the world .
T: Now after class I would like you to make a suggestion of the water pollution in SongTao Reservoir and the air pollution of the RenMin Road .Also the solutions to the problems. You can divide into two groups. One for water and the other for air. OK?