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Module4Readthesentencesandpayattentiontotheunderlinedparts.现在完成时I'vejustcopiedallthenewwords. Shehasn'tfinishedherhomeworkyet. Ihaveneverseenhimbefore. —Haveyouevermadedumplings? —Yes,Ihave.现在完成时的用法2.持续性用法(肯定句,疑问句中谓语动词必须是延续性动词): 表示过去已经开始,持续到现在的动作或状态。此时常与“for+一段时间”或“since+过去的点时间或从句(从句用一般过去时)”以及sofar(到目前为止)等时间状语连用。I’velivedheresince1990. 自从1990年以来我就住在这里。 =I’velivedheresince13yearsago. =I’velivedherefor13years. =Itis13yearssinceIbegantolivehere. We'veonlyraised2000sofar.按要求转换下列各句,每空一词。3.Juliahasnotgothomefromschoolyet.(改为肯定句) Julia_____________________homefromschool. 4.YouhaveneverbeentoShanghaibefore,__________________?(改为反意疑问句) 5.He’sgonetoBeijing,____________?(改为反意疑问句)6.MrWangbegantoteachEnglishinthisschoolin1999.(改为同义句) MrWang__________________Englishinthisschoolsince1999. 7.Ihaven'tseenhimforthreeyears.(同义句) I________________sincethreeyearsago. 8.Theyhavelivedheresince3yearsago.(对划线提问)—Haveyouheardabouttherecentelection? —Sure,it_____theonlythingonthenewsforthelastthreedays. A.wouldbeB.is C.hasbeenD.willbe 解析:考查动词时态。从上haveyouheard判断是现在范畴的时态,forthelastthree days是现在完成时的标志词,故选择C。高考真题D3.Whenyouarehome,giveacalltoletmeknowyou_______safely. A.arearrivingB.havearrived C.hadarrivedD.willarrive4.Uptonow,theprogram______thousandofchildrenwhowouldotherwisehavedied. A.wouldsaveB.saves C.hadsavedD.hassaved5.Inthelastfewyears,China_______greatachievementsinenvironmentalprotection. A.hasmade B.hadmade C.wasmaking D.ismaking一般过去时与现在完成时的区别一般过去时的常用时间状语:yesterday,lastweek,ago,in1980,inOctober,justnow等,皆为具体的时间状语; 而现在完成时的常用时间状语:for,since,sofar,ever,never,just,yet,till/until,uptonow等,一般为一段时间。现在完成时可表示持续到现在的动作或状态,动词一般是延续性的,如:live,teach,learn,work,study,know等; 而一般过去时长用非持续性动词,如:come,go,leave,start,die,finish,become,getmarried等。Isawthisfilmyesterday. (强调看的动作发生在过去某个时间) Ihaveseenthisfilm. (强调对现在的影响,即电影的内容已经知道了)Whydidyougetupsoearly? (强调起床的动作已经发生过) Whohasn’thandedinhispaper? (有人卷子未交,强调结果)延续性动词与非延续性动词 1.延续性动词可以与表示一段时间的状语连用,如:live,study,work,teach,stay,read,play,fly,talk,rain,eat,run等Ihavele