《大气环境保护》沉浸式双语教案设计──高一地理上册第二章第七节广东省东莞市东华初级中学叶晓霞教学目标1.了解大气污染所形成的全球变暖、臭氧层的破坏、酸雨等现象产生原因及危害；2.正确认识大气环境保护的重要意义；3.通过沉浸式双语讲授，学生在掌握地理知识的过程中，应用英语，提高英语应用能力。教学重点1.全球变暖2.臭氧层的破坏和保护3.酸雨的危害教学难点英语语境的建立与学科学习相结合教学准备多媒体课件教学过程1．Introduction(导入新课)ShowtothestudentsthepicturethattheearthissweatinglikeamanfeelingenormouslyhotinsummerandthepictureofAntarcticholeofozonosphere，andwatchtheshortfilmaboutacidrain.(出示地球出汗的卡通片，南极臭氧空洞图片以及观看酸雨影片片段，指出全球大气环境已经受到严重的污染，所以本课要研究大气环境保护)2．presentation（教授新课）2.1.整体思路Guidethestudentstoknowthreeatmosphericproblems，eachprobleminstructedinthisway:first，whatcausestheproblem;secondly，whatharmfulaffectssuchproblembring;andfinally，measuresthatcanbetakentosolvetheproblem.(分别讲述大气环境的三大问题，每个问题的以如下方法呈现：一产生问题的原因；二是其危害，三应当采取的措施)2.2具体教材双语的讲授。2.2.1globalwarmingAfterapicturethatshowthechangeofthetemperatureoftheearthinrecentyear，Iputforwardaquestion:“Isthetemperaturegoingupordown?Thestudentsansweredandstudentsunderstandwhatis“globalwarming”.ThenthestudentsdiscussedthecauseofglobalwarminginEnglish，IlistenedtothemandhelpthemexpressthemselvesinEnglish，finallyconclusionswerereachedaboutwhatthehumanshoulddotostoptheearthfromgettinghotter2.2.2theprotectionofozonelayerAtfirstashortEnglishfilmshowhowtheCFC“eat”theO3，thenwiththemorewidelyuseoftherefrigeratorthatusedCFC，Antarcticholeofozonosphereappeared(comesthepictureofAntarcticholeofozonosphere)afterthat，Englishfilmshowharmfulaffectsaboutthedepletionofozonelayer.Inthesameway，whattodotoprotectozonelayeristhelastthingforstudentstoknow.
