教案英语教案：Unit1 Tales of the unexplained-grammar（2）（牛津译林版必修2）.doc

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1、Unit1Talesoftheunexplained—grammar教案PresentperfecttenseTeachingaim:TogiveabriefintroductiontothepresentperfecttenseTeachingprocedures:1GooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.Pleaseexplainwhythetenseisusedinthesesentences.2Theformofthepresentperfectt

2、ense3TalkabouttheusesofthepresentperfecttenseAWeusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast,butareconnectedtothepresent.ThedisappearanceofJustinhasmadeKellyveryunhappy.BWealsousethepresentperfecttensetotalkaboutsomethingthatstartedinthepast,andisstillhappe

3、ningnow.IhavenotseenJustinsincelastFridaynight.CWeusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant.Weuseitwithtimeexpressionssuchas:alreadyeverforjustlatelyneverrecentlysinceyetWeusealreadyforaffirmativestatementsandyetfornegativestatements.Weusefor+aperiodo

4、ftimeandsince+apointintime.DWeusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago.Inthiscase,justisused.Payattentiontothepositionofjust.Hehasjustgoneout.(=Hewentoutafewminutesago.)Weusethepresentperfecttenseheretotellothersthatheisn’therenow.Ihavejustheard

5、thenews.(NowIknowthenews.)EWecanalsousethepresentperfecttenseforrepeatedactions,thatis,weusethepresentperfecttensewiththetimeexpressionsonce/twice/threetimes…FActionsoccurringinanincompleteperiodmightbeindicatedbytodayorthismorning/afternoon/evening/week/month/year/centuryorallday/

6、night/week,allthetime,alwaysetc.Tomhasrungupthreetimesthismorning.(Nowitisstillinthemorning.)Tomrangupthreetimesthismorning.(Nowitisnotstillinthemorning.)Completethefollowingsentenceswiththepropertense.AWehavestudied(study)Englishforaboutfiveyears.BTheyhavelived(live)inthesouthsinc

7、etheirdaughterwasborn.CIhaveread(read)yourarticlethreetimes.It’swellwritten.DThestudenthasfinished(finish)herhomeworkalready.EErichasgone(go)backtohishometowntoday.FThepolicehavejustfinished(finish)searchingthearea.4ComparethesimplepasttenseandthepresentperfecttenseLookatthefollowi

8、ngsentencesandpointoutwhat