2、.furtherunderstandthenewwordsandexpressionsthroughlistening,talking,writingandreading.3. Moral aim: Theenvironmentalproblemisveryseriousnow. Sowemustbefullyawareoftheimportanceofreducingpollution.Wemustlovetheearthandprotectit.II.Teachingimportantpoints:1.Masterthekeyw