Period1WelcometotheunitI.Teachingaims:1.Developstudents’abilityinlisteningandspeaking.2.Makestudentsdiscussthedevelopmentoftheelectricandelectronicappliancesandknowtheimportanceofit.II.Teachingimportantpoint:Howtoimprovestudents’abilityinlisteningandspeaking.III.Teachingdifficultpoint:1.HowtogettheSstoexpresstheirownopinionsbytalkinganddiscussing.2.Encouragestudentstospeakfreely.IV.Procedures:Step1.GreetingStep2.BrainstormingBegintheclasswithseveralquestions.1.________playsanimportantroleinexploringtheunknownfieldsandrealizingthedreamsofourancestors（祖先）.2.Hightechnologyhasadirecteffectonourlife.Whatelectricalandelectronicappliances(电器)doyouhaveathome?Step3.Picturetalk1.Showatimelineandaskstudents:Whatcanyouconcludefromthetimeline?2.Askstudentstotalkaboutthedevelopmentoftheappliancesaccordingtothegivenpictures.Step4:Discussion1.Whatcanourhumanbeingsbenefitfromthedevelopmentofelectricandelectronicappliances?2.Canwedependontheseappliancescompletely?Step5:SummaryWithpeople’shardworkandintelligence,humanbeingsownlotsofusefulandhandyelectricandelectronicdevices.Thesedevicesdomakeussavealotoftimeandenergy.Besides,theyfreeusfromheavyhousework.Butweshouldnotdependcompletelyonthem.Wehumanbeingsshouldmakereasonableuseofthemsothatwecanrelaxourselvesandfindpleasureandhappinessinourlife.Step6:Homework1.ReadtwopassagesonP106-1072.Previewreading.V.Designofwritingonblackboard:VI.Recordafterteaching:
