八年级英语下册-Unit-10-Ive-had-this-bike-for-three-years(第3课时)课件-

Unit10I’vehadthisbikeforthreeyears.GrammarHowlonghaveyouhadthatbikeoverthere?I'vehaditforthreeyears.Howlonghashissonownedthetrainandrailwayset? He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven'tplayedforawhilenow.GrammarFocusfor和since在现在完成时中的应用for与since都能与现在完成时连用，但区别较大：（1）for后须接“时间段”HehasstudiedEnglishforfiveyears.他学英语5年了。（2）since后须接“时间点”

HehasstudiedEnglishsince1999.他从1999年开始学英语。（3）二者可以转换for+一段时间=since+一段时间+agoHehasbeenhereforfiveweeks.=Hehasbeenheresincefiveweeksago.他到这儿已经有五个星期了。如：HehastaughtheresincehecametoChina.自从他来到中国就在这儿教书。Wehavebeenfriendssincewemetinschool.我们从在学校见面起就成为了好朋友。(4)since能引导时间状语从句(主句用现在完成时，从句用一般过去时)，而for则不能。（5）现在完成时常用句型：①Itis(hasbeen)+时间段+since+时间状语或从句ItisfourdayssincelastFriday.从上周五到现在已经四天了。IthasbeentwoyearssinceJimcametoBeijing.吉姆来北京已经两年了。②Thisisthefirst(second…)timethat+从句句型中的that从句通常使用现在完成时。如：ThisisthefirsttimethatJennyandDannyhavebeentoChina.这是珍妮和丹妮第一次来屮国。ThisisthethirdtimethatIhaveseenKaren.这是我第三次见到Karen。（6）均须与延续性动词连用，也可以与非延续性动词的否定式连用。如:Ihaveboughtthiscomputersincefouryearsago.(×)Ihavehadthiscomputersincefouryearsago.(√)Ihaven’tboughtanythingfortwomonths.(√)Ihaven'theardfromhimfor3weeks.(√)非延续性动词和延续性动词的转换leave—beawayborrow—keepbuy—havebegin/start—beondie—bedeadfinish---beoveropensth—keepsthopenfallill—beillgetup—beup,comehere—behere,join—beon+组织机构/beamember组织机构,gothere—bethere,become—be,comeback—beback,fallasleep—beasleep,

getto/arrive/reach—be(in),leave—beawayfrom,gettoknow—know,go(get)out—tieout，puton—wear,catchacold—haveacold,getmarried—bemarried等。Theoldmandied4yearsago.—Theoldmanhasbeendeadfor4years.Itis4yearssincetheoldmandied.—Fouryearshaspassedsincetheoldmandied.HejoinedtheParty2yearsago.—HehasbeeninthePartyfor2years.Iboughtthebook5daysago.—Ihavehadthebookfor5days.如：（7）二者引出的时间状语往往用howlong提问。—Howlonghaveyouhadthisbook?这本书你买多久了?—Foraweek./Sinceaweekago.买一周了。JimisinJapan.Hearrivedtherethreedaysago.__________________________________2.Theyareveryhungry.Theirlastmealwastenhoursago.________________________________________________________________4aRewritethesentencesusingfororsince.JimhasbeeninJapanforthreedays.Theyareveryhungrybecausetheyhaven’thadtheirmealfortenhours.3.Ihaveacamera.Iboughtitin2009._______________________________4.IknowAnna.Ifirstmetherthreeyearsago.___________________________________5.Lindaisill.ShebecameillonMonday.____________________________________Ihavehadacamerasince2009.IhaveknownAnnaforthreeyears.LindahasbeenillsinceMonday.1.I______________(neverbe)tothewaterparkbefore.Iwantto____(go)nextmonthbeforetheweathergetstoocold.2.They_______________ (neverown)anypets,butthey____________(alwayswant)tohaveadog.3.We__________(have)apianosincelastNovember.We_________(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4bFillintheblankswiththecorrectformsoftheverbsinbrackets.haveneverbeengohaveneverownedalwayswanthavehadbought4.CathyandAmy_____________(notbe)backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisittheplacenexty