现在完成时Since和for的用法

现在完成时Since和for的用法Since和for的用法表示过去已经开始持续到现在的动作或状态常用的时间状语有：for,since,howlong,sofar,thesedays等。Since+过去点的时间，for+一段时间(数词+量词)，此划线部分用howlong提问。一、since短语或从句表示过去的动作延续至今，since之后的时间为一点。如：Mr.Smithhasworkedheresince1984.1984年以来，史密斯先生一直在这工作。He’slearnedabout5,000Englishwordssincehewenttocollege.他上大学以来大约学了五千个英语单词。二、for短语表示动作延续多长时间，for的宾语为时间段。如：Wehaveknowneachotherfortwentyyears.我们认识有二十年了。Ihaven’tseenherforalongtime.我好久没有见到她了。练习：用since和for填空1)______twoyears2)_______twoyearsago3)_______lastmonth4)______19995)_______yesterday6)_______4o’clock7)______4hours8)_______anhourago9)_______wewerechildren10)_____lunchtime11)______shelefthere1.HehaslivedinNanjing________theyearbeforelast.2.I’veknownhim__________wewerechildren.3.OurteacherhasstudiedJapanese_________threeyears.4.Shehasbeenawayfromthecity___________abouttenyears.5.It’sabouttenyears__________sheleftthecity.2.短暂性转换延续性①arriveat/insw.getto/reachsw.come/go/movetosw.→beinsw./atschool/athome/onthefarm/behere/bethere1)HegottoBeijingfiveminutesago.He__________________________Beijingfor__________________.2)ImovedtotheUSAlastyear.I__________________________theUSAsince____________________.3)Iwenthomeyesterday.I________________________homefor___________________.4)Theycameherelastweek.They__________________heresince___________________.②come/goback,return→bebackcome/goout→beout1)Hecameouttwoyearsago.He____________________________for____________________.2)WereturntoFuzhouyesterday.We_________________________toFuzhou③become→be1)Ibecameateacherin2000.I__________________ateacherfor__________________.2)Theriverbecamedirtylastyear.Theriver__________________dirtyfor___________________.④close→beclosedopen→beopen1)Theshopclosedtwohoursago.He__________________________________theleaguefortwoyears.2)Mybrotherjoinedthearmytwoyearsago.Mybrother____________________a___________for______________________.Mybrother______________________in_______________________fortwoyears.3.汉译英1)这本字典我已买了三年了。2)他离开中国三年了。3)我认识他们五年了。4)他们已去了美国五年了。5)自从他搬到福州，他就住这儿了。6)他们已经结婚10年。7)我妹妹成为一个大学生已经三年。8)这会已开了多长时间了?9)这门已经关了两天了。10)我入团2年了。I________________________________twoyearsago.I_____________________a______________________fortwoyears.I_____________________a___________of___________________fortwoyears.I_________________________________the__________fortwoyears.11)自从1999年以来他们就认识。12)我来到农场已5年了。4.划线提问1)Ihavebeentherefortwodays._____________________________you____________________?2)Myfatherhaslivedheresince2000.____________________________yourfather___________________?