Unit10SectionA(4a4c)課件人教版八年級(jí)英語下冊(cè)

Unit10I'vehadthisbikeforthreeyears.SectionA(4a-4c)Bytheendofthisperiod,youwillbeableto1.learnknowledgeaboutpresentperfecttensewithsinceandfor;2.writecorrectsentenceswithpresentperfecttense;3.writeaboutyourfavoritething；4.improveyourwritingbyusingdifferentwordsandphraseswithsimilarmeaningandaddmorerelatedinformation.HowlonghaveyouhadthatbikeoverthereI’vehaditforthreeyears.RoleplayHowlonghashissonownedthetrainandrailwaysetHe’sowneditsincehisfourthbirthday.Howlonghaveyouhadthatbikeoverthere?I’vehaditforthreeyears.Howlonghashisson

ownedthetrainandrailwayset?He’sowneditsincehisfourthbirthday.Haveyoueverplayedfootball?Yes,IdidwhenIwaslittle,butIhaven’tplayedforawhilenow.GrammarFocusPresentPerfectTense現(xiàn)在完成時(shí)表示從過去已經(jīng)開始持續(xù)到現(xiàn)在的動(dòng)作或狀態(tài)，可以和表示“從過去某一時(shí)刻延續(xù)到現(xiàn)在的一段時(shí)間狀語”連用，如“for+時(shí)間段”、“since+過去時(shí)間點(diǎn)”、“since+過去時(shí)的從句”、“since+一段時(shí)間+ago”。且for與since引導(dǎo)的時(shí)間狀語可以相互轉(zhuǎn)換。e.g.Myunclehasworkedatthisfactoryfor

tenyears.=Myunclehasworkedatthisfactory

sincetenyearago.I’ve

lived

here

since

1990．

自從1990年以來我就住在這里。

I

haven’t

seen

him

for

three

years.

我三年沒有看見他了。

for與since都能與現(xiàn)在完成時(shí)連用，但區(qū)別較大：（1）for后須接“時(shí)間段”e.g.HehasstudiedEnglishforfiveyears.

他學(xué)英語5年了。（2）since后須接“時(shí)間點(diǎn)”e.g.HehasstudiedEnglishsince1999.

他從1999年開始學(xué)英語。for和since在現(xiàn)在完成時(shí)中的應(yīng)用for+一段時(shí)間（fortwoweeks）since+

過去的時(shí)間點(diǎn)（since8:00）since＋一段時(shí)間＋ago(sincetwoweeksago)since+從句(一般過去時(shí))用for和since填空:1.Wehaven’tseeneachother______alongtime.2.Hisfatherhasbeeninthefactory______10yearsago.3.Thefilmhasbeenon______20minutes.4.MrGreenhasworkedhere______hecametoChina.5.Hisgrandparentshavebeendead______severalyears.6.Itisfiveyears_______wemetlasttime。forsinceforsinceforsince【例1】他去世三年了。誤：Hehasdiedforthreeyears.正：Hehasbeendeadforthreeyears/sincethreeyearsago.正：Hediedthreeyearsago.【例2】我到這兒3天了。誤：Ihavearrivedherefor3days.正：Ihavebeenherefor3days.1.JimisinJapan.Hearrivedtherethreedaysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.3.Ihaveacamera.Iboughtitin2009.4aRewritethesentencesusingfor

orsince.JimhasbeeninJapanforthreedays.P76Theyhavenoteatenfortenhours.Ihavehadacamerasince2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.IhaveknownAnnaforthreeyears.LindahasbeenillsinceMonday.P761.I__________________(neverbe)tothewater

parkbefore.Iwantto____(go)nextmonthbeforetheweathergetstoocold.2.They_____________________

(neverown)anypets,butthey______________________(alwayswant)tohaveadog.3.We__________(have)apianosincelastFillintheblankswiththecorrectformsoftheverbsinbrackets.haveneverbeengohaveneverownedhavealwayswantedhavehad4b

November.We_________(buy)itfromtheLi

familywhentheymovedtotheUSlastyear.4.CathyandAmy_____________(notbe)backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum__________(be)hereforover20years.It_____(be)oneoftheoldestbuildingsinthissmalltown.boughthaven’tbeenmisshasbeenisFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_________Howlonghaveyouhadit2.Doyouowna(n)__________HowlonghaveyouowneditThingsHowlongTonyfavoritebookfortwoyearsbasketballsincehewas10yearsoldstudent1student24csummary現(xiàn)在完成時(shí)1.構(gòu)成2.用法3.常用時(shí)間狀語（標(biāo)志詞）4.和一般過去時(shí)的區(qū)別5.一區(qū)別6.瞬間動(dòng)詞和延續(xù)性動(dòng)詞的轉(zhuǎn)換ExercisesI(see)himjustnow.2.I(notsee)himforalongtime.3.He(live)heresincehewastenyearsold.4.He(live)herein1998.5.---youyourbreakfast---Yes,Ihave.---Whenyouit---Thirtyminutesago.(eat)sawhaven’tseenhaslivedlivedHaveeatendideat6.—DoyouknowthemovieLostinThailand—Yes.I______ittwice.It’sfunny.A.sawB.seeC.haveseenD.willsee7.—Lunch—No,thanks.I__________.A.willeatB.ameatingC.haveeaten8.—WhereisTomWecan’tfindhimanywhere.—Perhapshe_____home.A.hasgoneB.isgoingC.wentD.wasgoing9.Sanyaisabeautifulcity.I

theretwice.