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1、延续性动词和非延续性动词延续性动词是指表示能够延续的动作。如：study,work,stand,walk,keep,have,wait,watch,sing,read,sleep,live,stay等。☆延续性动词可以与表示时间段的状语连用。表示时间段的短语有:for+时间,for2years;since从句,sincehecamehere;since+时间点名词,sincelastyear,since5daysago;howlong;foralongtime等。非延续性动词这类动词也可称为终止性动词、短暂性动词、瞬间动词、点动词，表示的动作不能延续，即动作发生后立即
2、结束。☆非延续性动词表示的动作极其短暂，不能持续。因此，不可与表示一段时间的状语连用(只限肯定式)。如：(1)他已经死了三年了。误：Hehasdiedforthreeyears.正：Hehasbeendeadforthreeyears.正：Hediedthreeyearsago.正：Itisthreeyearssincehedied.正：Threeyearshaspassedsincehedied.(2)他来这儿五天了。误：Hehascomehereforfivedays.正：Hehasbeenhereforfivedays.正：Hecameherefivedaysa
3、go.正：Itisfivedayssincehecamehere.正：Fivedayshaspassedsincehecamehere.两者的转换：leave---beaway,borrow---keep,buy---have,begin/start---beon,die---bedead,fallill---beillfinish---beoveropensth---keepsthopen,getup---beup,comehere---behere,gothere---bethere,fallasleep---beasleepbecome---be,comebac
4、k---beback,gettoknow---know,go(get)out→beout，puton→wearcatchacold→haveacoldmarry/getmarried---bemarried等例:Theoldmandied4yearsago.----Theoldmanhasbeendeadfor4years.----Itis4yearssincetheoldmandied.----Fouryearshaspassedsincetheoldmandied.练习题用过去时或现在完成时填空：1.________you_________(have)lunchy
5、et?When_______you_________(have)it?I_______(have)itathalfpasteleven.2._________you__________(write)alettertoyourauntyet?Yes,I___________.I________________(write)onelastweek.3.“_________he___________(finish)hishomework?”“Notyet.”4._________theyever__________(be)abroad?5.Yourfather_______
6、__just___________(finish)hiswork.6.Myfather_________(finish)hisworkjustnow.短暂性动词转换为延续性动词①arriveat/in→bein1)HearrivedinBeijingfiveminutesago.He__________________________Beijingfor__________________.2)ImovedtotheUSAlastyear.I__________________________theUSAsince____________________.3)Iwen
7、thomeyesterday.I________________________homefor___________________.4)Theycameherelastweek.They__________________heresince___________________.②come/goback,return→bebackcomegoout→beout1)Hecameouttwoyearsago.He____________________________for____________________.2)WereturntoFuzhouy
