What things can harm the environment
What do you think we should do to improve our environment )
活动目的：通过列举污染源，学生更清楚当前环境的不仅如人意，保护环境刻不容缓，从而使学生增强保护环境的意识。他们动脑筋，想办法，积极讨论保护环境的措施，在不知不觉中提高英语语言运用能力。
活动过程：
T: There is much pollution all over the world now
. Can you tell me what it is
(学生很快地回答)
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 factoriesect.
( 学生不会用英语说印染厂及塑料厂，他们说中文，我说英文。)
T: What else can cause water pollution ,too
Ss: Some people throw rubbish into rivers and lakes .
T: How can we help to solve this problem
( 学生们分组讨论解决办法。 )
Ss: We can advise the directors of these factories
to stop pouring waste water into rivers and lakes .
T: If they dont accept your advice ,what else can
we do
( 学生们讨论更热烈了，过了一会儿，他们七嘴八舌地说：)
Ss:1. We 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
(学生异口同声说Yes。由于写作太费时间，这封信作为回家作业，请同学们写在作业本上。)
T: You have told me what causes water pollution
and how to solve this problem .Youre 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 arent many factories in our city,Hangzhou .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
(学生们分组讨论解决方案，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。)
Ss: 1.We can plant more trees on roads .
2.We can ask people not to drive their cars to work .
3.We can ask people to ride bikes to work .
4.We can tell people riding bikes is good for
their health .
T: If their homes are far away from their
workplaces ,can they ride bikes to work
Ss: No.
T: How can we solve it
(学生们兴致更高了。你说一句，我说一句。大意是：)
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
Hangzhou more beautiful .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 dont pick up rubbish in public places .
.
(我乘机问全班同学下列问题。)
T: Will you spit in public places from now on
Ss： No.
T: Will you draw on public walls any more
Ss: No.
T: Will you cut down trees in the future
Ss: No.
T: Will you throw rubbish in public places
Ss: No.
.
(这时候，同学们情绪很高涨，他们几乎是异口同声地说：)
We must try our best to make our city (our
country) the most beautiful one in the world .
点评
本案例是根据第三册第十课的pre-read拓展而成的。
