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2019-2020年高中英语Unit4AstronomythescienceofthestarsLanguagePoints教案新人教版必修(授课日期年月日星期班级)授课题目Book3Unit4LanguagePoints拟课时第课时明确目标
1、知识与技能Helpstudentstolearnsomeimportantexpressionsandsentencestructure..
2、过程与方法:Discussionandgroupwork
3、情感态度与价值观Helpstudentstohaveadeeperunderstandingoftheplay重点难点重点Tohelpstudentsmastersomeimportantpointsofthetext.难点Improvestudents’comprehensiveability.课型□讲授□习题□复习□讨论□其它教学内容设计因材施教Step1:DictationDictatesomeimportantwordsandexpressionsinUnit4Step2:SentencepatternsNotestosomedifficultsentencesAfterthe“BigBang”theearthwasjustacloudofenergeticdust.随着“轰隆”一声巨响,地球就成为一个云团,充满着具有能量的尘埃BigBangbig-bangcosmology大爆炸宇宙学Itexplodedloudlywithfireandrockwhichwereintimetoproducethewatervapourcarbondioxideoxygennitrogenandothergaseswhichweretomaketheearth’satmosphere.它(地球)巨大的爆炸喷出了烈火与岩石,最终产生了水蒸汽、二氧化碳、氧、氮和其他多种气体,从而形成了地球的大气层Nobodyknewthatitwasgoingtobedifferentfromotherplanetsgoingroundthesun.谁也不知道地球会别于环绕太阳运转的其它行星Step
3.LanguagepointItallowedtheearthtodissolveharmfulgaseswhichhadbecomepartoftheearth’satmosphereintotheoceansandseas.它使地球把曾经存在于大气层中的有害气体溶解在海洋里allow…todo允许某人做某事如Herparentswon’tallowhertostayoutlaterthan11:00intheevening.她父母不允许她晚上在外逗留超过11点PleaseallowmetoexplainthatIdidnothaveanyideaabouthisarrangement.请允许我解释,我事先不知道他的安排2Thisencouragedthedevelopmentofearlyshellfishandallsortsoffish.这为早期贝类及其他各种鱼类的发育进一步创造了条件encourage鼓励;促进;怂恿Fatherencouragedhimtostudyphysicsbutheprefersmaths.父亲鼓励他学物理,但他更喜欢数学Heencouragedmetolearndancing.他鼓励我去学跳舞
3.Theyproducedyounggenerallybylayingeggs.它们一般是通过孵蛋而繁衍后代的bydoing用于说明做某事的手段,方式如Idon’tthinkshecanhelphimbyjustgivinghimmoney.我认为她光靠给钱是帮不了他的Heusedtomakehislivingbypainting.他以前是靠画画为生Theyareputtingtoomuchcarbondioxideintotheatmospherewhichpreventsheatfromescapingfromtheearthintospace.他们把过多的二氧化碳释放到大气层中,这使得地球上的热不能释放到太空中去prevent…fromdoing阻止某人做某事如Hishearttroubledidnotpreventhimfromgoingtoclassthenextday.他的心脏病痛没能阻止他第二天去上课Nothingcanpreventtheirplansfrombeingcarriedout.什么也不能阻止他们的计划得以实施
5.Whetherlifewillcontinueontheearthformillionsofyearstocomewilldependonwhetherthisproblemcanbesolved.在未来的数百万年中,生命能否在地球上延续取决于这个问题能否得到解决sthdependonsthelse:somethingmightonlyhappenorbetrueifthecircumstancesarerightforit取决于;决定于如“Willyougofishingthisafternoon”“Wellitalldependsontheweather.”“你今天下午去钓鱼吗?”“得看天气”formillionsofyearstocome中不定式tocome作定语,与前面的名词之间有逻辑上的主谓关系,例如Step4PracticeMakesentencescorrectlyaccordingtotheimportantwordsandsentencesStep4:HomeworkMakesentences教学后记。