【初中英语】2018人教新目标版八下Unit10Ivehadthisbikeforthreeyear

Unit10I'vehadthisbikeforthreeyears.八年级下册英语（人教版）单元语法专题—GrammarFocus►since和for的区别since和for都用于现在完成时中，其中since后面可接过去的时间点，也可接“一段时间＋ago”，还可以接从句；for后面只能接“一段时间”。如：Myparentshavelivedinthiscitysince2009.我的父母从2009年起就居住在这座城市。Shehasbeenadoctorsincetwoyearsago.她从两年前就当医生了。Lilyhashadthetoybearfortwoyears.莉莉已经有这个玩具熊两年了。现在完成时（三）【注意】(1)终止性动词也称非延续性动词，可以用于现在完成时，说明某个动作的结果还存在，但不能与表示一段时间的状语连用。如：TheWhiteshavecomeback.(正)TheWhiteshavecomebackfortwodays.(误)(2)在否定句中，终止性动词可以与表示一段时间的状语连用。如：Ihaven'theardfrommyfriendforthreeweeks.我已经有三周没有收到我朋友的来信了。【拓展】当终止性动词与表示一段时间的状语相矛盾时，常用以下方法进行转换：(1)用ago把现在完成时的句子改为一般过去时。如：Hehasleftthevillageforsixdays.(误)Heleftthevillagesixdaysago.(正)(2)用“一段时间＋haspassed＋since＋一般过去时”句型改写。如：Shehasborrowedthebookfortwoweeks.(误)Twoweekshaspassedsincesheborrowedthebook.(正)(3)用“Ithasbeen＋一段时间＋since＋一般过去时”句型改写。如：Hisgrandfatherhasdiedforafewyears.(误)Ithasbeenafewyearssincehisgrandfatherdied.(正)(4)用系表结构(be＋形容词副词)改写或用相应的延续性动词代替终止性动词。如：come/arrive/go→bein/at,begin/start→beon，finish/end/stop→beover，open→beopen,die→bedead，leave→beaway，close→beclosed，fallasleep→beasleep，join→beamemberof/bein，become→be，buy→have，borrow→keep，gettoknow→know，puton→wear，catchacold→haveacold，comeback→beback一、用括号内所给单词的适当形式填空。1．We____________(notsee)eachothersinceI___(leave)theuniversity.2．Thehospital___________(be)herefor10years.It____(be)thetallestbuildinginourcity.3．She__________________(neverbe)totheamusementparksincetwoyearsago.Herparents__________(take)hertherenextweek.4．Idon'twanttogiveawaymyfootballshirtsalthoughI_______________(notplay)forawhilenow.5．I______________________(nevervisit)theGreatWallbefore.Iwant_________(visit)itoneday.haven'tseenlefthasbeenishasneverbeenwilltakehaven'tplayedhavenevervisitedtovisit二、单项选择。6．(导学号：38274041)(齐齐哈尔中考)—Howlongisitsincehe____thisschool?—He________forthreeyears.A．hasleft;hasleftB．left；hasbeenawayC．leaves;hasleft7．(毕节中考)It'snicetoseeyouagain.We____eachothersince2016.A．won'tseeB．haven'tseenC．don'tseeD．didn'tseeBB8．—Howlong____you________inLiping，Mr.Green?—Sincelastmonth.A．did；comeB．do;comeC．have；comeD．have;been9．(江西中考)SincewebegantousetheInternet,ourlives____alot.A．changeB．hadchangedC．willchangeD．havechangedDD10．(北京中考)Lilyismyclassmate.We____eachothersinceshecametoourschool.A．knowB．knewC．haveknownD．willknowC三、按要求完成下列句子。11．HerparentscametoChinafiveyearsago.(改为同义句)Herparents_______________China____fiveyears.12．Myfatherlefthomethedaybeforeyesterday.(用fortwodays改写句子)Myfather__________________homefortwodays.13．Susanboughttheumbrellathedaybeforeyesterday.(改为同义句)Susan____________theumbrella________twodaysago.havebeeninforhasbeenawayfromhashadsince