T: If they don’t 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 .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,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。)

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