For和since

U6现在完成时for和since的用法小结现在完成时中，当动作发生在过去,目前仍在继续或刚刚结束常和“for”加上“一段时间”,或“since”加上“一个确切的过去的时间”连用。a)for用于过去的一段时间.(动词必须是可以延续的)Hehasbeenthereforsixmonths.她去那儿有6个月了。(直到现在)Hewentthere6monthsago.Hehasneverbeenthere.他从来都没去过那里。(直到现在)b)since用于过去的一个确切的时间,意思是从那时一直到现在,总是和完成时一齐用,而且不能省略.(主句动词必须是可以延续的)TimhasbeeninNantongsinceJanuary.自从1月份以来他一直都在南通。(现在仍在南通)注意:“since”后面的确切的过去的时间也可以是一个含有过去时的从句.Hehasbeeninterestedincollectingcoinssincehewasachild.他打小时侯起就对收集硬币感兴趣。（现在还是如此）I.翻译：他死了已经3年了。1.Hedied3yearsago.2.Hehasbeendeadfor3years.3.Hehasbeendeadsince3yearsago.4.Itis3yearssincehedied.5.Threeyearshaspassedsincehedied.II.Completethesentences,usingforandsince:1.we,study,English,(fiveyears,1982)WehavestudiedEnglish____fiveyears.WehavestudiedEnglish____1982.2.he,work,inthisfactory,(morethantenyears,1976)Hehasworkedinthisfactory____1976.Hehasworkedinthisfactory___morethantenyears.forforsincesince3.it,notrain,(alongtime,October)Ithasn’trained_____October.Ithasn’trained_____alongtime.4.i,notplay,football,(lastSunday,aweek)Ihaven’tplayedfootball_____aweek.Ihaven’tplayedfootball_____lastSunday.5.Ihaven’tmether_____Iarrivedhere.forforsincesincesinceIII.Askquestionsabouttheunderlinedparts:1.MissBrownhaslivedinChinafortenyears.________hasMissBrownlivedinChina?2.Theyhavefoundatortoiseontheriverbank._____havetheyfoundatortoise?3.Wehavevisitedthefactorytwice._____________haveyouvisitedthefactory?HowlongWhenHowmanytimes