Unit4Whenwasitinvented?Teachingaims:1．学会使用含有被动语态的不同句型结构“Whenwasitinvented?”和“Whowasitinventedby?”来谈论各种发明物的历史。2.能用被动语态正确表达发明物的历史。如：Itwasinventedin1876.ItwasinventedbyBell.3.通过了解一些中外发明者的事迹，培养勤奋学习、立志为社会多做贡献的精神。Teachingimportantpoints:1.Whenwas/were…invented?Itwas/Theywereinventedin…Whowas/were…inventedby?Itwas/Theywereinventedby…2.topic:Inventions.[来源:学#科#网]Teachingaids:multi-media,arecorderStepI:GreetingsT:Goodmorning,class!Ss:Goodmorning,MrLuo.T:Whoisondutytoday?Ss:Yes,Iam.…StepII:Lead-inT:Goodmorning,boysandgirls.Todaywewillanewunitaboutinventions.Youcanseeinventionsallaroundus,fromTVtocar,fromfoodtoclothing.Weshouldsaynobodycanlivewithoutthem.Don’tyouthinkso?Canyouimagineonedaywithoutinventions?[来源:学科网]Ss:That’simpossible.[来源:Z.xx.k.Com]T:Yes,weliveinaworldofinventions.Theseinventionsmakeourlifeeasierandmorecomfortable.Inthisunit,wewilllearnsomeinventionsandtheirhistory.First,saytheancientChinawasverygreatintheworld.Itwasfamousforthefourgreatinventions.DoyouknowthefamousinventionsintheancientChina?GuessSstotalkaboutit.Showfourgreatinventions’picturestoSs.[来源:Zxxk.Com]Second,DoyouknowEdison?DoyouknowwhatEdisonwasinventedinhislife?GetSstotalkaboutEdison’sinventions.StepIII:ListeningDoyouknowthemoderninventionsintheworld?Theyhavechangedourlifemore.GetSstoguesswhattheyare.Showsomemoderninventions’picturestoSs.GetSstolistentothetape,andnumberfromonetofive(Whichkindofinventionisinfront,whichkindofinventionisinafter).GetSstolistentothetapeagain.Listenandmatchtheinventionswiththedates.StepIV:Practicetheconversations.Practice1:GetSstopracticethisconversation.Andasksomestudentstopracticeinclass.---Whenwasthephoneinvented?---Ithinkitwasinventedin1876.Practice2:ShowanothermoderninventionstoSs.Forexample,bike,camera…Asksomestudentstopracticetheconversationinclasss.A:Whenwasthephoneinvented?B:Itwasinventedin1876.A:Whowasitinventedby?B:ItwasinventedbyBell.[来源:学科网]StepV:SomepicturesaboutChineseSpaceflight[来源:学&科&网]Showsomepicturestostudents.LetSsguesswhotheywereinventedby.Raisesstudent'snationalsenseofpride.[来源:Zxxk.Com]StepVI:ExercisesTherearesomeexercisesaboutthelesson.Reviewtheimportantpointsinclass.StepVII:HomeworkReviewnewwordsandfinishtheexercisesinPage99-100(课时作业第一课时)
