年生产40万吨脱硫石膏水泥缓凝剂

现在完成时ThePresentPerfectTense滑县八里营乡初级中学黄利英Studyingaims1.现在完成时的构成2.现在完成时的主要用法及相关的时间状语3.短暂性动词与时间段的关系4.havebeen与havegone比较5.与一般过去时的用法比较夏天还会远吗?willitstillbefarinsummer?春天已经来了,Springhasalreadycome,现在完成时态Springhasalreadycome.一)构成:have/has+动词过去分词基本结构have/has+done助动词（可以帮助构成肯定、疑问和否定句）1.Hehascleanedhisroom.(写一个一般疑问句）Hashecleanedhisroom?2.ShehaslivedinLondonforfouryears.(划线部分提问）HowlonghasshelivedinLondon?3.HehasbeentoChina,________?（写出反义疑问句部分）hasn’the4.Theyhavecomebackfromwork.(写否定句）Theyhaven’tcomebackfromwork.(一)表示过去发生的动作或事情对现在的影响和产生的结果.它强调的是过去的动作同现在的联系.常用的时间状语有already,yet,ever,never,just,before等.现在完成时的主要用法A:______yourbrother______hishomeworkyet?(finish)B:Yes,he‘salreadydoneit.KeywordsHasfinishedyetalready注意：already用于肯定句，yet用于疑问句和否定句中A:_______youever_______tothepark?(be)B:No,never.KeywordsHavebeenyetalreadyevernever注意：ever曾经用于疑问句中never从不带有否定意义I______just________thedesk,youcantakeittoyourclassroom.(mend)KeywordshavemendedyeteverneverjustalreadyJust刚刚与现在完成时连用一般置句中Justnow刚才与一般过去时连用(二)表示一个从过去开始,一直持续到现在,有可能继续下去的动作或状态.通常和for或since引导的时间状语连用.Tom___________inthefactorysinceheleftschooltenyearsago.(work)Keywordshasworkedsincesince后面带过去时间或有一般过去时的句子A:Howlong______you________inthisschool?(teach)B:For6years.Keywordshavetaughtsincefor+一段时间We_______only____________100treessofar.(plant)Keywordshaveplantedsofar到目前为止Keywordsyeteverneversinceforjustbeforealreadysofarinthepast10yearstwice也可以是其他表示次数的词howlong•Hehasboughtthebook.•Hehasboughtthebookforaweek.•Hehashadthebookforaweek.buyhavecome/go/gettobeinjoinbeinbea…memberleavebeawayborrowkeepbeginbeonfinishbeoverdiebedeadreturebebackShehasboughtthecomputerfortwoyears.hadbuyhave/hashadHowlonghaveyoucometotheUnitedStates？beenincometohave/hasbeeninbuyhave/hashadAnnhasgonetoChinasincethreemonthsago.beenincometohave/hasbeeninbuyhave/hashadgotohave/hasbeeninIhaveleftShanghaifor3days.beenawayfor3days.cometohave/hasbeeninbuyhave/hashadgotohave/hasbeeningottohave/hasbeeninjoinhave/hasbeeninhave/hasbeenasoldierleavehave/hasbeenawayIhaveborrowedthedictionarysince3daysago.keptcometohave/hasbeeninbuyhave/hashadgotohave/hasbeeningottohave/hasbeeninjoinhave/hasbeeninhave/hasbeenasoldierleavehave/hasbeenawayborrowhave/haskeptThefilmhasbegunfor10minutes.beenoncometohave/hasbeeninbuyhave/hashadgotohave/hasbeeningottohave/hasbeeninjoinhave/hasbeeninhave/hasbeenasoldierleavehave/hasbeenawayborrowhave/haskeptbeginhave/hasbeenonTheconcerthasfinishedforhalfanhour.beenovercometohave/hasbeeninbuyhave/hashadgotohave/hasbeeningottohave/hasbeeninjoinhave/hasbeeninhave/hasbeenasoldierleavehave/hasbeenawayborrowhave/haskeptbeginhave/hasbeenonfinishhave/hasbeenoverHisdoghasdiedfortwoyears.beendeadcometohave/hasbeeninbuyhave/hashadgotohave/hasbeeningottohave/hasbeeninjoinhave/hasbeeninhave/hasbeenasoldierleavehave/hasbeenawayborrowhave/haskeptbeginhave/hasbeenonfinishhave/hasbeenoverdiehave/hasbeendeadhavebeentohavegonetohavebeenin去过某地已经回来常与ever,never,once,twice,连用一直留在某地与for/since连用用howlong提问去了某地还没回来只用于第三人称Hersister_____________Australia,Sheleftthismorning.hasgonetohave/hasbeentohave/hasgonetohave/hasbeenin去过常与ever,never,once,twice,连用在…与时间段连用用howlong提问去了说话时某人不在只用于第三人称A:Howlong____you_______China?B:I_________herefor3years.havebeenhavebeeninhave/hasbeentohave/hasgonetohave/hasbeenin去过常与ever,never,once,twice,连用在…与时间段连用用howlong提问去了说话时某人不在只用于第三人称A:_____youever________thecity?B:No,never.Havebeento与一般过去时的用法比较现在完成时和一般过去时都是说过去的事情，但现在完成时注意的不是事情本身,而是强调事情与现在保持的某种密切联系（如现在的结果，影响,一直延续到现在等）;而一般过去时，则只讲述发生在过去的动作和事情与现在没有关系。上一页下一页主菜单We____________eachothersincechildhood.We____________eachotherwhenwewereyoung.knowhaveknownknewI________himjustnow.(see)I_____just_____mypen.(lose)sawhavelostA:When______you______thefilm?B:I____ittwomonthsago.(see)Thewriter________________severalstory-bookssince5yearsago.(finish)didhasfinishedseesaw用动词的适当形式填空•1.--______you_________yourpen?(mend)•--Yes,I_______.•--When_______you_______it?•--I__________ityesterday.•2.--Howdoyoulikethefilm?•--I____________(notsee)suchamovingfilm•before.•3.Millie’ssister_______(join)theclublastweek.•Soshe_________(be)intheclubfornearly•oneweek.Havemendedhavedidmendmendedhaven’tseenjoinedhasbeenExercises•4.Myfather__________(give)up________(smoke).•Hedoesn’t_________(smoke)now.•5.TheGreenfamily_____________(notcome)back•yetfromthecinema.•They______(go)toseeafilmonehourago.hasgivensmokingsmokehaven’tcomewent•6.ShehasknownSam______nineyears.•(for,never,since)•7.Theyhave______arrived.•(ever,just,yet)•8.Haveyou_____riddenahorse?•(ever,for,yet)•9.ShehasknownFred______theywere•atprimaryschool.•(already,just,since)•10.Wehavenotcompletedthe•project_____.(already,for,yet)forjusteversinceyet•Writeapassageabouttraveltousethepresentperfecttense.Homework