BythetimeIgotoutside,thebushadalreadyleft.TheSecondPeriodⅠ.TeachingAimsandDemands1.KnowledgeObjects(1)TargetLanguageBythetimeshegottoclass,theteacherhadalreadystartedteaching.Whenshegottoschool,sherealizedshehadleftherbackpackathome.WhenIgothome,IrealizedIhadleftmykeysinthebackpack.(2)TheThreeFormsoftheverbs.2.AbilityObjects(1)Trainthestudents’listeningskill.(2)Trainthestudents’writingskillwiththetargetlanguage.(3)Trainthestudents’speakingskill.(4)Trainthestudentstousethethreeformsoftheverbs.3.MoralObjectTrytobeacarefulpersonanddoeverythingcarefully.RemembernottobeascarelessasTina.Ⅱ.TeachingKeyPoints1.Listeningpracticewiththetargetlanguage.2.Usethecorrectverbformstofillintheblanksbylistening.3.MakesentencesusingthePastPerfectTense.4.Thethreeformsoftheverbs.Ⅲ.TeachingDifficultPoints1.Writea