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litre n．公升
sink n．水槽；水池
electricity n．电
shut v．关上；合上重点短语throw away 扔掉
encourage sb.to do sth.鼓励某人做某事
neither... nor...既不……也不……
turn off 关掉；关闭
shut down 关闭；停下重点句子1.In an environment club，students work together to reduce pollution and protect the environment.在环境俱乐部里，学生们一起协作来减少污染并保护环境。
2．How much garbage do you throw away after lunch？午餐后你扔掉多少垃圾？
3．Environment clubs encourage students to bring their lunches in reusable bags and dishes.环境俱乐部鼓励学生们用可重复使用的袋子和盘子来带他们的午餐。
4．The class with the least garbage gets a prize.(制造)垃圾最少的班级可以获奖。
5．It's a good way to reduce packaging.这是减少包装的好方法。
6．Did you know that a leaky toilet can waste 20 to 40 litres of water an hour？你知道一个渗漏的厕所一小时会浪费20至40公升水吗？
7．Turn off the television and shut down the computer when you are not using them.当你不用电视和电脑时请关掉它们。教学难点掌握本课时的重点短语和句子；
能够运用目标语言谈论人们在环境俱乐部可以做些什么来减少污染和保护环境自主学习
一、根据句意及首字母或汉语提示写出单词。
1．Chemical wastes pollute the rivers and streams.
2．You should not waste food when many people are hungry.
3．We should take reusable (可重复利用的) bags for shopping.
4．Mr.Smith can drink five litres (公升) of beer.
5．It reduces(减少)the risks of heart disease.
二、写出下列画线短语的汉语意思。
1．How much garbage do you throw_away after lunch？扔掉
2．Environment clubs encourage_students_to_bring their lunches in reusable bags and dishes.鼓励学生带……
3．On a no－car day，nobody comes to school in a car—neither the students nor the teachers！既不……也不……
4．Turn_off the television and shut_down the computer when you are not using them.关掉；关闭 关闭；停下
教学过程
环节1 新课导入
T：Hello，boys and girls! Look at the following pictures and answer the questions.