英语人教版八年级下册unit10 Section A Grammar Focus

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1、Unit10I'vehadthisbikeforthreeyearsSectionA3(Grammarfocus–4c)学习目标：★知识目标掌握现在完成时的用法★能力目标正确区分现在完成时与一般过去时正确运用for和since的用法★情感目标正确处理并充分利用自己的废旧物品。教学重难点：★教学重点正确运用for和since的用法★教学难点一般过去时与现在完成时中延续性动词和非延续性动词的转换★学习过程Step1精讲点拨现在完成时表示从过去已经开始持续到现在的动作或状态，可以和表示“从过去某一时刻延续到现在的一段时间状语”连用，如“for+时间段”、“since+过去时间点”、“si

2、nce+过去时的从句”、“since+一段时间+ago”。且for与since引导的时间状语可以相互转换。e.g.Ihavehadthebookforaweek.=Ihavehadthebooksinceaweekago.Step2句中动词的特点此种用法中表示持续性的动作或状态的动词必须是延续性动词（否定句除外）1.这本书我借了一周了。Ihaveborrowedthebookforoneweek.()I’vekeptthebookforoneweek.()2.Tom参军多长时间了？HowlonghasTomjoinedthearmy?()HowlonghasTombeeninthe

3、army/beenasoldier?()非延续性动词和延续性动词之间的转换1.转换为相应的延续性动词，用于现在完成时。borrow—keepbuy—haveputon—wearcatchacold—haveacoldgettoknow—knowgettosleep—sleep2.转化为“be+形容词/副词/介词/名词”begin/start—beongoout—beoutclose—beclosedopen—beopengetto/arrive/reach—be(in)die—bedeadleave—beawayfinish—beoverfallsleep—beasleepjoin

4、—bein/beamemberofbecome—bemakefriends—befriendscome/go—be+相应的介词短语Step34aRewritethesentencesusingfororsince1.JimisinJapan.Hearrivedtherethreeyearsago.JimhasbeeninJapanforthreeyears.2.Theyareveryhungry.Theirlastmealwastenhoursago.Theyhavebeenhungryfortenhours/sincetenhoursago.3.Ihaveacamera.Ibou

5、ghtitin2009.Ihavehadacamerasince2009.4.IknowAnn.Ifirstmetherthreeyearsago.IhaveknownAnnforthreeyears/sincethreeyearsago.5.Lindaisill.ShebecameillonMonday.LindahasbeenillsinceMonday.Step44bFillintheblankswithcorrectformsoftheverbsinbrackets.1.I__________(neverbe)tothewaterparkbefore.Iwantto____

6、_(go)nextmonthbeforetheweathergetstoocold.2.They_____________(neverown)anypets,butthey___________(alwayswant)tohaveadog.3.We________(have)apianosincelastNovember.We______(buy)itfromtheLifamilywhentheymovedtotheUSlastyear.4.CathyandAmy__________(notbe)backtotheirhometownfortwoyears.They_______(

7、miss)theirhometownalotandhopetovisittheplacenextyear.5.Thismuseum__________(be)hereforover20years.It______(be)oneoftheoldestbuildingsinthissmalltown.Step5Groupwork4cFillinthequestionsandasktwostudents.Thencompletethechart.1.Doyouhavea(n