Unit 10 Grammar focus-人教版英语八年级下册

I’vehadthisbikeforthreeyears.Unit10SectionAGrammarFocus-4cGrammarfocusquestionsanswershowlong引导的疑问句用for或since连用的完成时态的句子回答。for+一段时间（week,

month）since+时间点（2000，5o’clock）

since+时间段+agosince+从句（过去时）过去时在现在完成时中，含有for和since的句子可以相互转换。如：Theyhavelivedhereforfiveyears.=Theyhavelivedheresincefiveyearsago.练一练选择for或since填空。1.Ihavebeenhere________fivemonthsago.2.Hehasbeenasoldier_____abouttwomonths.3.Greatchangeshavetakenplace________youleft.4.Hisgrandpahasbeendead_____tenyears.5.IhavestudiedEnglish_______Iwas12yearsold.6.Itistwoyears________Ibecameajuniorhighschoolstudent.sinceforsinceforsincesince现在完成时中的谓语动词在现在完成时中，与“for+时间段”、“since+过去的时间点或从句”或“since＋时间段＋ago”连用的动词必须为延续性动词。常见的延续性动词有have，live，teach，learn，work，study，know等；常见的非延续性动词（词组）有come，go，leave，start，die，finish，become，join，buy，getmarried等。

部分非延续性动词（词组）和与之对应的延续性动词（词组）的表达。非延续性动词（词组）延续性动词（词组）becomebeborrowkeepbuyhave/owngetupbeupfallasleepbeasleepmakefriendsbefriendsfinishbeoverleavebeaway(from)非延续性动词（词组）延续性动词（词组）openbeopenclosebeclosedlosebelostdiebedeadjoinbeamemberof/beinbegin/startbeonputonwearturnon/offbeon/off非延续性动词（词组）延续性动词（词组）catchacoldhaveacoldgotosleepsleepmovetoliveincome/arriveherebeheregotherebetheremarry/getmarriedbemarriedAlex

(hasbeen,hasbecome)adoctorfortenyears.Helikeshisjobverymuch.2)Wearelate.Themovie

(hasstarted,hasbeenon)sincetenminutesago.3)Ken,youshouldreturnthebooktothelibrary.You______________(haveborrowed,havekept)itformorethantwoweeks.4)I

(havebought,havehad)thisbikesinceIwasten,soIwanttobuyanewone.hasbeenhasbeenonhavekepthavehad4bFillintheblankswiththecorrectformsoftheverbsinbrackets.I_______________(neverbe)tothewaterparkbefore.Iwantto_____(go)nextmonthbeforetheweathergetstoocold.2.They_________________(neverown)anypets,butthey_________________(alwayswant)tohaveadog.haveneverbeengohaveneverownedhavealwayswanted3.We_________(have)apianosincelast November.We_______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy____________(notbe) backtotheirhometownfortwoyears.They______(miss)theirhometownalotandhopetovisittheplacenextyear.havehadboughthaven’tbeenmiss5.Thismuseum_________(be)herefor over20years.It_____(be)oneofthe oldestbuildingsinthissmalltown.

hasbeenis4aRewritethesentencesusingfororsince.JimisinJapan.Hearrivedtherethreedaysago.JimhasbeeninJapanforthreedays/since3daysago.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavenoteatenanythingfortenhours.Howaretheynow?Whenwastheirlastmeal?3.Ihaveacamera.Iboughtitin2009.4.IknowAnna.Ifirstmetherthreeyearsago.5.Lindaisill.ShebecameillonMonday.Ihavehadacamerasince2009.IhaveknownAnnforthreeyears/sincethreeyearsago.LindahasbeenillsinceMonday.4cFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n)_______?Howlonghaveyouhadit?2.Doyouowna(n)_______?Howlonghaveyouownedit?ThingsHowlongTonyfavoritebookfortwoyearsbasketballsincehewas10yearsoldStudent1Student