八年级英语 现在完成时讲解与练习课件 外研版

Whathaveyoudonethismorning?Ihaveseenalittleaccidentthismorning.Isawalittleaccidentthismorning.Ace.KuThePresentPerfectTense

（现在完成时）Whathaveyoudonethismornin1Fillintheform:

1.I___________(know)LiLeiforthreeyears．2.I___________(live)heresince1980

3.--_______you________(finish)yourworkyet？

--Yes，I_______．I_______just_______(finish)it．4..--_______youever_______(be)toachickenfarm？

--No，I_______never_______(be)toachickenfarm．5.She__________(be)atthisschoolforoverfourteenyears．haveknownhavelivedHavefinishedhavehavefinishedHavebeenhavebeenhasbeen

TheformofthePresentPerfectTense

(现在完成时的构成):“have/has+done”(助动词have/has+过去分词)Fillintheform:haveknownhav2Fillintheform:1.Mary__________(sing)thissongalready.Letherhavearest.2.He_____never________(travel)onatrain.3.MrGreen___________(teach)Englishsince1990.4.Jim_________(be)toWuhantwice.5.WhereisJim?He__________(go)toWuhanforbusiness.

6.She___________(work)inthatfactoryfor20years.

7._____you_____(see)thefilmbefore?No,notyet.havesunghastravelledhastaughthasbeenhasgonehasworkedHaveseen

Discussion:1.WhenisthePresentPerfectTenseused?2.What’sthedifferencebetweenhave/hasgonetoandhave/hasbeento

?3.WhatkindsofwordsorphrasescanbeusedinthePresentPerfectTense?Fillintheform:havesunghast3WhenisthePresentPerfectTenseused?2.What’sthedifferencebetweenhave/hasgonetoandhave/hasbeento

?3.WhatkindsofwordsorphrasescanbeusedinthePresentPerfectTense?现在完成时的用法:（1）表示过去发生或已经完成的某一动作对现在造成的影响或结果;（2）表示过去已经开始，持续到现在的动作或状态.我们可以简记为：过去对现在，过去到现在have/hasbeen和have/hasgone的区别：have/hasbeen表示“曾到过某地”；have/hasgone表示“到某地去了”。现在完成时常与already，just，yet，ever，never,before等连用.也可以和表示从过去某一时刻延续到现在（包括“现在”在内）的一段时间的状语连用，如for，since，sofar,now，today，thismonth，thisyear等.DiscussionWhenisthePresentPerfectTe4用所给动词的适当形式填空：1.Thenewspaperishere.It_______(come)amomentago.I

(notread)ityet.2.I_______(lend)myCDplayertoheryesterday,butshe______________(notreturn)ittomeyet.3.Haveyou_________(borrow)thisbookbefore?Yes,I________(borrow)itlastweek.4.______you_______(copy)allthenewwords?Yes,I______(copy)themhalfanhourago.5.WhereisJack?–He________(go)swimmingalready.--He______(go)out20minutesago.6.______you_______(see)thefilmbefore?Yes,I________.When_______you_________(see)it?Amonthago.camehaven’treadlentborrowedhasn’treturnedborrowedHavecopiedcopiedhasgonewentHaveseenhavedidsee用所给动词的适当形式填空：camehaven’treadl5

现在完成时和一般过去时的比较（1）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。（2）一般过去时常与具体的时间状语连用，如：yesterday,lastweek，…ago,in1980,inOctober,justnow…等.而现在完成时通常与just,already,ever,never,yet,等副词和for,since,sofar,thesedays等表示一段时间的状语连用，或无时间状语。（3）现在完成时可表示从过去持续到现在的动作或状态，动词一般是延续性的，例如：live,teach,learn,work,study,know…,一般过去时则没有这一用法.现在完成时和一般过去时的比较（1）一般过去时表示过去某6Correctthemistakes:Thefilmhasbegunforhalfanhour.Thebabyhascaughtabadcoldsincelastnight.Hehasborrowedthemagazineforafewdays.Howlonghashejoinedthearmy?Thefilmhasbeenonforhalfanhour.Thefilmbeganhalfanhourago.Thebabyhavehadabadcoldsincelastnight.Thebabyhadabadcoldlastnight.Hehaskeptthebookforafewdays.Heborrowedthebookafewdaysago.Howlonghashebeeninthearmy?Howlonghashebeenamemberofthearmy.Whendidhejoinedthearmy?Correctthemistakes:Thefilm7

关于瞬间动词：1.瞬间动词可以有现在完成时态，但不可以与表示一段时间的状语连用，若要接一段时间，需要做一些相应的变换：borrow—buy—die—open—close—leave—come—get/arrive—join—2.但是瞬间动词的否定形式可以与表示一段时间的状语连用。keephavebedeadbeopenedbeclosedbeawayfrombebeinbeamemberofeg.Hehasn’tcomehereforaweek.eg.Thedoghasbeendeadfortwodays.Hehaskeptthisbookforaweek.关于瞬间动词：keephavebe8Fillintheform,usingdifferenttenses:1.HanMei_______toEnglandonceayear.(go)2.Lastyear,Jim_______toShanghai.(travel)3.We________nearly2000wordsbytheendofnextterm.(learn)4.Theoldman________onthelonelyislandallhislife.(live)5.SometimesMrGreen______MrSmithwithpresents.(visit)6.Nonews______goodnews.(be)7.Thefactory________________forseveralyears.(close)goestravelledwilllearnhaslivedvisitsishasbeenclosedFillintheform,usingdiffer9Gamesaquickanswer1234567Gamesaquickanswer123456710TrueorfalseTherehashadalotofbigfactoriesinmyhometownsince1994.Therehasbeenalotofbigfactoriesinmyhometownsince1994.TrueorfalseTherehashada11TrueorfalseI’msurethatwehaveseenthefilmago.I’msurethatwehaveseenthefilmbefore.TrueorfalseI’msurethatwe12What'sthedifferenceA.HehaslivedinBeijingfor8years.B.HelivedinBeijingfor8years.A句指的是到目前为止他在北京住了8年了，可能还会继续住下去。B句指的是他在北京住过8年，现在不在北京了。What'sthedifferenceA.Hehas13MakesentencesJim,for,so,has,tonight,is,Shanghai,tomorrow,leaving,to,bed,early,go,he,to.

-JimisleavingforShanghaitomorrow,sohehastogotobedearlytonight.MakesentencesJim,for,so,ha14Makesentencesseen,I,book,you,haven’t,your,put,history,it,the,just,teacher’s,now,desk,on.Ihaven’tseenyourhistorybook.Youputitontheteacher’sdeskjustnow.Makesentencesseen,I,book,15PutthissentenceintoEnlish王叔叔离开家已经有几天了，他去大连出差了。UncleWanghasbeenawayfromhishomeforseveraldays.HehasgonetoDalianonbusiness.PutthissentenceintoEnlish王16PutthissentenceintoEnlish我是半小时以前开始写作文的，现在还没有写完呢。

IbegantowritemycompositionhalfanhouragoandIhaven’tfinishedityet.PutthissentenceintoEnlish我17PracticeChooseonetopicandmakeadialogue:inthelibrarytalkaboutaplaceyouhavejustbeentoPracticeChooseonetopicandm18Whathaveyoudonethismorning?Ihaveseenalittleaccidentthismorning.Isawalittleaccidentthismorning.Ace.KuThePresentPerfectTense

（现在完成时）Whathaveyoudonethismornin19Fillintheform:

1.I___________(know)LiLeiforthreeyears．2.I___________(live)heresince1980

3.--_______you________(finish)yourworkyet？

--Yes，I_______．I_______just_______(finish)it．4..--_______youever_______(be)toachickenfarm？

--No，I_______never_______(be)toachickenfarm．5.She__________(be)atthisschoolforoverfourteenyears．haveknownhavelivedHavefinishedhavehavefinishedHavebeenhavebeenhasbeen

TheformofthePresentPerfectTense

(现在完成时的构成):“have/has+done”(助动词have/has+过去分词)Fillintheform:haveknownhav20Fillintheform:1.Mary__________(sing)thissongalready.Letherhavearest.2.He_____never________(travel)onatrain.3.MrGreen___________(teach)Englishsince1990.4.Jim_________(be)toWuhantwice.5.WhereisJim?He__________(go)toWuhanforbusiness.

6.She___________(work)inthatfactoryfor20years.

7._____you_____(see)thefilmbefore?No,notyet.havesunghastravelledhastaughthasbeenhasgonehasworkedHaveseen

Discussion:1.WhenisthePresentPerfectTenseused?2.What’sthedifferencebetweenhave/hasgonetoandhave/hasbeento

?3.WhatkindsofwordsorphrasescanbeusedinthePresentPerfectTense?Fillintheform:havesunghast21WhenisthePresentPerfectTenseused?2.What’sthedifferencebetweenhave/hasgonetoandhave/hasbeento

?3.WhatkindsofwordsorphrasescanbeusedinthePresentPerfectTense?现在完成时的用法:（1）表示过去发生或已经完成的某一动作对现在造成的影响或结果;（2）表示过去已经开始，持续到现在的动作或状态.我们可以简记为：过去对现在，过去到现在have/hasbeen和have/hasgone的区别：have/hasbeen表示“曾到过某地”；have/hasgone表示“到某地去了”。现在完成时常与already，just，yet，ever，never,before等连用.也可以和表示从过去某一时刻延续到现在（包括“现在”在内）的一段时间的状语连用，如for，since，sofar,now，today，thismonth，thisyear等.DiscussionWhenisthePresentPerfectTe22用所给动词的适当形式填空：1.Thenewspaperishere.It_______(come)amomentago.I

(notread)ityet.2.I_______(lend)myCDplayertoheryesterday,butshe______________(notreturn)ittomeyet.3.Haveyou_________(borrow)thisbookbefore?Yes,I________(borrow)itlastweek.4.______you_______(copy)allthenewwords?Yes,I______(copy)themhalfanhourago.5.WhereisJack?–He________(go)swimmingalready.--He______(go)out20minutesago.6.______you_______(see)thefilmbefore?Yes,I________.When_______you_________(see)it?Amonthago.camehaven’treadlentborrowedhasn’treturnedborrowedHavecopiedcopiedhasgonewentHaveseenhavedidsee用所给动词的适当形式填空：camehaven’treadl23

现在完成时和一般过去时的比较（1）一般过去时表示过去某时发生的动作或单纯叙述过去的事情，强调动作；现在完成时为过去发生的，强调过去的事情对现在的影响，强调的是影响。（2）一般过去时常与具体的时间状语连用，如：yesterday,lastweek，…ago,in1980,inOctober,justnow…等.而现在完成时通常与just,already,ever,never,yet,等副词和for,since,sofar,thesedays等表示一段时间的状语连用，或无时间状语。（3）现在完成时可表示从过去持续到现在的动作或状态，动词一般是延续性的，例如：live,teach,learn,work,study,know…,一般过去时则没有这一用法.现在完成时和一般过去时的比较（1）一般过去时表示过去某24Correctthemistakes:Thefilmhasbegunforhalfanhour.Thebabyhascaughtabadcoldsincelastnight.Hehasborrowedthemagazineforafewdays.Howlonghashejoinedthearmy?Thefilmhasbeenonforhalfanhour.Thefilmbeganhalfanhourago.Thebabyhavehadabadcoldsincelastnight.Thebabyhadabadcoldlastnight.Hehaskeptthebookforafewdays.Heborrowedthebookafewdaysago.Howlonghashebeeninthearmy?Howlonghashebeenamemberofthearmy.Whendidhejoinedthearmy?Correctthemistakes:Thefilm25

关于瞬间动词：1.瞬间动词可以有现在完成时态，但不可以与表示一段时间的状语连用，若要接一段时间，需要做一些相应的变换：borrow—buy—die—open—close—leave—come—get/arrive—join—2.但是瞬间动词的否定形式可以与表示一段时间的状语连用。keephavebedeadbeopenedbeclosedbeawayfrombebeinbeamemberofeg.Hehasn’tcomehereforaweek.eg.Thedoghasbeendeadfortwodays.Hehaskeptthisbookforaweek.关于瞬间动词：keephavebe26Fillintheform,usingdifferenttenses:1.HanMei_______toEnglandonceayear.(go)2.Lastyear,Jim_______toShanghai.(travel)3.We________nearly2000wordsbytheendofnextterm.(learn)4.Theoldman________onthelonelyislandallhislife.(live)5.SometimesMrGreen______MrSmithwithpresents.(visit)6.Nonews______goodnews.(be)7.Thefactory________________forseveralyears.(close)goestravelledwilllearnhaslivedvisitsishasbeenclosedFillintheform,usingdiffer27Gamesaquickanswer1234567Gamesaquickanswer123456728TrueorfalseTherehashadalotofbigfactoriesinmyhometownsince1994.Therehasbeenalotofbigfactoriesin