nitРUР7РtheРEarthРProtectРWatch and sayРProtect the EarthРUnit 7Р保护РThink and sayРWhat do you know about the Earth?РGreen GuardР5. We can repeat about protecting the Earth.РGreen Guards Needed?招募环保小卫士Р2. We know the use of them.Р3. We know the problems of them.Р4. We know the solutions(解决方法) of the problems.Р1. We know how to protect the Earth from some parts.Р4Р2Р3Р1РCan you give titles(标题) to the pictures?РLook and sayР4Р2Р3Р1РRead and find out the four titles(标题).РSkim and sayРSave waterРSave energyРSave treesРDon’t use too much plasticР节约Р能源Р塑料РWatch the cartoon and find out the use of them. You can write down some key words.РWatch and match
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