八下第十单元第三课时SectionA(GrammarFocus～4c)

第三课时SectionA(GrammarFocus～4c)单元语法精讲精练1．现在完成时表示从过去某一时刻延续到现在的动作或状态，常与for，since引导的时间状语连用。for＋一段时间，since＋过去时间点或从句(从句的谓语动词用过去式)。eg：Ihavelivedherefortwentyyears.我住在这里已有20年了。Wehavebuiltmanyfactoriessince1985.自1985年以来，我们建了许多工厂。HehasalwayshelpedmewithmyEnglishsincehecamehere.自从他到这里以后，他总是帮助我学习英语。2．有的动词所表示的动作不是瞬间就可以完成的，要持续一段时间，这样的动词叫延续性动词。不能延续下去的动词，叫非延续性动词或瞬间动词。如：buy，borrow等，这些动词在完成时中可改为相应的表示延续性的词或短语来与表示一段时间的状语连用。如：buy→have，borrow→keep，come→be，join→be，die→bedead，begin→beon等。eg：Hejoinedthearmytwoyearsago.他两年前就参军了。(同义句)→Hehasbeeninthearmyfortwoyears.→Hehasbeenasoldierfortwoyears.一、用since或for填空。1．Heworkedthere_____sixyears.2．IhavebeenlearningEnglish________Iwastenyearsold.3．Alisonhasbeenskating________fivehoursago.4．Mr.Smithhasbeenthere________tenyears.5．We'vebeenfriends_________weleftschool.forsincesinceforsince二、根据句意，用所给词(组)的适当形式填空。6．We___________(notmeet)eachotherforfiveyears.Bothofus_______(leave)thefactoryfiveyearsago.7．Thehospital_________(be)therefor15years.Itis(be)thetallestbuildinginourcity.8．Thechildren______________(nevervisit)theGreatWallbefore.Theirparents___________(take)themtherenextmonth.9．They___________(neverown)anypets，butthey___________(decide)tokeepadogthisyear.10．I______________________(neverbe)tothewaterparkbefore.Iwant___________(go)thereandhavefun.haven'tmethasbeenlefthavenevervisitedwilltakeneverownhavedecidedhaveneverbeentogo三、单项选择。11．I________myhometownforalongtime.Ireallymissit.(2014，黔西南州)A．leftB．wentawayfromC．haveleftD．havebeenawayfrom12．He

inthisfactoryfor20yearsalready.(2014，北京)A．willworkB．worksC．hasworkedD．isworking13．—DoyouknowDiaoyuIsland?—Sure.It

Chinasinceancienttimes.A．belongstoB．belongedtoC．hasbelongedtoD．isbelongingtoD

CC14．She

fortenyearsandnowshehasalovelydaughter.A．marriedB．hasbeenmarriedC．gotmarriedD．hasgotmarried15．—Lookatthesestamps.I

themforfiveyears.—Wow，theyarewonderful.A．keptB．havekeptC．haveboughtD．willkeepBB四、同义句转换。16．WejoinedtheLeaguein2003.We______________theLeaguesince2003.17．Themeetinghasbeenonforhalfanhour.Themeeting___________halfanhour__________．18．Weborrowedthebikesfromourfriendstwodaysago.We___________ourfriends'bikes______twodays.19．Jacklefthishometownin2002.Jack________________hishometown_________2002.20．IboughttheiPadaw