·Teaching aims and demands 1.Knowledge aims 1) To learn something about protecting the environment. 2)To know more about the ways to save the world. 3)To learn the grammar: word-bui
·知识目标： Words and phrases:Waste, wasteful, throw away, metal, energy, pollution, recycle, reader, environment, reusable, hopelessGrammar: 前后缀构词法能力目标：listening , speaking 德育目标：Teach students to protect o
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