微课堂(现在完成时since和for的用法)

GrammarB现在完成时有关since和for的用法since表示“自……以来”，后面接“时间点”常用的表示“时间点”的表达方式有：自从2012年以来since2012自从两年前以来sincetwoyearsago自从他进校以来now(2014)2012sincehecametothisschoolNote：since后面如果接从句时，用一般过去时，如上题中的camefor与since则不同，后面接“时间段”，表示“已经有……时间了”常用的表示“时间段”的表达方式有：已经两年了fortwoyearsfor和since之间可以相互转换如：fortwoyears=sincetwoyearsago如果相对于现在的时间的话，也可以说成，since2012下面是习题时间……GrammarB现在完成时有关since和for的用法请选用for或since填空1.________20002.________halfanhour3.________Iwasborn4.________halfanhourago7.________acoupleofyears8.________MH370(马航370)disappeared5.________lastmonth6.________8o’clockGrammarB现在完成时有关since和for的用法sinceforsincesincesincesinceforsince1.HehaslivedinZhenjiang________theyearbeforelast.2.I’veknownhim__________wewerechildren.3.OurteacherhasstudiedJapanese_________threeyears.4.Shehasbeenawayfromthecity___________abouttenyears.5.It’sabouttenyears__________sheleftthecity.用for或since将句子补充完整GrammarB现在完成时有关since和for的用法sincesinceforforsince中考链接：17.MysisterhaslearntEnglish.A.fortwelveyearsagoB.sinceshewasfourC.twelveyearsagoD.attheageoffour17.MysisterhaslearntEnglish.A.fortwelveyearsagoB.sinceshewasfourC.twelveyearsagoD.attheageoffour1.MysisterhaslearntEnglish________.2.A.fortwelveyearsagoB.sinceshewasfourC.twelveyeasagoD.attheageoffour2.BritishPrincewilliam(威廉王子)andKatehavebeenmarried_____.A.fornearlytwomonthsB.twomonthsagoC.sincetwomonthsbeforeD.in2011用法总结：for+一段时间since+一段时间+agosince+时间点since+从句GrammarB现在完成时有关since和for的用法BA能力提升：1.Theyhaven’tseeneachothersincelastweek.（同义句转换）Theyhaven’tseeneachother__________________.Theyhaven’tseeneachother________________________.2.KittyhasbeeninHongKongfortwodays.（同义句转换）KittyhasbeeninHongKong________________________.3.我两个小时前就在这儿了。4.他已经睡了十个小时了。5.李先生从2005年起住在这套公寓里。6.这些工人已经工作七个小时了。GrammarB现在完成时有关since和for的用法foraweeksinceaweekagosincetwodaysagoHehassleptfortenhours.Theseworkershaveworkedforsevenhours.Mr.Lihaslivedinthisflatsince2005.Ihavebeenheresincetwohoursago.=fortwohours=sincetenhoursago