高中英语 Unit1 Tales of the unexplained Grammar and usage教案 牛津译林版必修2-牛津版高一必修2英语教案VIP免费

Unit1TalesoftheunexplainedPeriod5GrammarandUsagePresentperfecttense&presentperfectcontinuoustenseTeachingaims:1.HelpSslearnhowtoformandusethepresentperfecttense2.HelpSslearnhowtoformandusethepresentperfectcontinuoustenseTeachingmethods:1.Reading2.PracticeTeachingprocedures:Stepone:Lead-in1.MakeSstolookatthefollowingsentencesandpointoutwhattenseortensesareusedinthemandthereasonwhytheyareused.1)WehavestudiedEnglishforaboutfiveyears.Webegantostudyitfiveyearsago.2)Theymovedtothesouthin1990andhavelivedtheresincethen.3)Thestudentisdoingherhomework.Shehasn’tfinishedityet.4)Ericlefthomelastyearandhasjustcomeback.Takesentenceoneasanexample:ThetimewebegantostudyEnglishwasatadefinitetimeinthepast,soweusethepastsimpletense.Buttheactionstudyhappensagainandagain,soweusethepresentperfecttense.TellSs:Whenanactionhappensoveraperiodoftimethatbeganinthepastandcontinuestothepresent,thepresentperfecttenseisoftenused.Steptwo:ReadingAskSstoreadpoint1—6onpage8andexplainthereasonswhytheyareusedinthesesentences.ThenaskSstoreadpoint1—3onpage9.TellSsthatweusepresentperfectcontinuoustensetotalkaboutactionsthatstartedinthepastandarestillcontinuing,orhavejustfinishedbutarestillconnectedtothepresentinsomeway.Examples:I’vebeenwaitingforanhourandhestillhasn’tturnedup.I’msosorryIamlate.Haveyoubeenwaitinglong?Stepthree:DifferencebetweenPresentperfectorpresentperfectcontinuousAskSstoreadpoint1-4onpage10andknowthedifferencebetweenthem.Stepfour:Practicea)AskSstofinishdoingpartA&Bonpage11.b)AskSstofinishPartConpage88.