二模块三单元grammar

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1、UnitThreeGrammarPeriodOnePresentperfecttense祖军武、朱丽、万力新、李爱贞、方颖Teachingaim:TogiveabriefintroductiontothepresentperfecttenseTeachingprocedures:1GooverthenewsstoryonPage2andfindthesentencesusingthepresentperfecttense.Pleaseexplainwhythetenseisusedinthesesentences.2Theformofthep

2、resentperfecttense3TalkabouttheusesofthepresentperfecttenseAWeusethepresentperfecttensetotalkaboutthingsthathappenedintherecentpast,butareconnectedtothepresent.ThedisappearanceofJustinhasmadeKellyveryunhappy.BWealsousethepresentperfecttensetotalkaboutsomethingthatstartedint

3、hepast,andisstillhappeningnow.IhavenotseenJustinsincelastFridaynight.CWeusethepresentperfecttensewhentheexacttimeofanactionisnotclearorimportant.Weuseitwithtimeexpressionssuchas:alreadyeverforjustlatelyneverrecentlysinceyetWeusealreadyforaffirmativestatementsandyetfornegati

4、vestatements.Weusefor+aperiodoftimeandsince+apointintime.DWeusethepresentperfecttensetotalkaboutactionsthatwerecompletedonlyashorttimeago.Inthiscase,justisused.Payattentiontothepositionofjust.Hehasjustgoneout.(=Hewentoutafewminutesago.)Weusethepresentperfecttenseheretotello

5、thersthatheisn’therenow.Ihavejustheardthenews.(NowIknowthenews.)EWecanalsousethepresentperfecttenseforrepeatedactions,thatis,weusethepresentperfecttensewiththetimeexpressionsonce/twice/threetimes…FActionsoccurringinanincompleteperiodmightbeindicatedbytodayorthismorning/afte

6、rnoon/evening/week/month/year/centuryorallday/night/week,allthetime,alwaysetc.Tomhasrungupthreetimesthismorning.(Nowitisstillinthemorning.)Tomrangupthreetimesthismorning.(Nowitisnotstillinthemorning.)Completethefollowingsentenceswiththepropertense.AWehavestudied(study)Engli

7、shforaboutfiveyears.BTheyhavelived(live)inthesouthsincetheirdaughterwasborn.CIhaveread(read)yourarticlethreetimes.It’swellwritten.DThestudenthasfinished(finish)herhomeworkalready.EErichasgone(go)backtohishometowntoday.FThepolicehavejustfinished(finish)searchingthearea.4Comp

8、arethesimplepasttenseandthepresentperfecttenseLookatthefollowingsentencesandpointo