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孟溪中学胥甫祥语法复习——现在完成时Shecleanedthedeskjustnow.ThedeskiscleannowShehascleanedthedesk.现在完成时复习目录现在完成时态的概念现在完成时态的结构现在完成时态的句型现在完成时态的用法现在完成时态与一般过去式的比较havebeento/havegoneto/havebeenin现在完成时的构成：have/has+动词的过去分词has:第三人称单数助动词have:第一、二/复数Hehascleanedthedesk.Ihavecleanedthedesk.Wehavecleanedthedesk.Theyhavecleanedthedesk.Youhavecleanedthedesk.Shehascleanedthedesk.练习：(4)重读闭音节结尾，末尾只有一个辅音字母，先双写该辅音字母，再加“ed”。(1)一般动词，在词尾直接加“ed”。(2)以“e”结尾的动词，只在词尾加“d”。(3)以“辅音字母+y”结尾的动词，将"y"变为"i"，再加“ed”。过去分词的构成规则动词：写出下列动词的过去式和过去分词•work____________•live____________•stay____________•stop____________•clean____________•study____________workedworkedlivedlivedstayedstayedstoppedstoppedstudiedstudiedcleanedcleanedburstburstbursthurthurthurtletletletcostcostcostcutcutcuthithithitputputputshutshutshutsetsetsetspreadspreadspreadreadreadreadAAA型beatbeatbeatenAAB型becomebecamebecomerunranruncomecamecomeABA型bringbroughtbroughtbuyboughtboughtbuildbuiltbuiltburnburntburntcatchcaughtcaughtdigdugdugfeelfeltfeltfightfoughtfoughtfindfoundfoundhearheardheardholdheldheldkeepkeptkeptlaylaidlaidleadledledloselostlostmakemademademeetmetmetsellsoldsoldABB型thinkthoughtthoughtshootshotshotsitsatsatstandstoodstoodsweepsweptsweptteachtaughttaughttelltoldtoldwinwonwonbeginbeganbegunblowblewblownbreakbrokebrokenchoosechosechosendrawdrewdrawndrivedrovedrivendrinkdrankdrunkflyflewflownforgiveforgaveforgivenforgetforgotforgottengivegavegivenfreezefrozefrozenknowknewknowngrowgrewgrownrideroderiddenriseroserisenringrangrungshakeshookshakensingsangsungsinksanksunkswimswamswumwritewrotewrittenABC型Shehascleanedthedesk.按要求完成句子。作否定回答：变否定句：变一般疑问句：作肯定回答：Hasshecleanedthedesk?Shehasn'tcleanedthedesk.Yes,shehas.No,shehasn't.主语＋havenot(haven’t)/hasnot(hasn’t)+过去分词＋其它.Have（Has）＋主语＋过去分词＋其它？Yes，主语＋have（has）；No,主语＋haven’t（hasn’t）．现在完成时用法：（一）现在完成时用来表示过去发生或已经完成的某一动作对现在造成的影响或结果。常跟just,already,yet,ever,never,before,once,twice,threetimes,等时间状语连用。标志词：HaveyouevervisitedtheGreatWall?IhavejustvisitedtheGreatWall.IhavenevervisitedtheGreatWall.IhavevisitedtheGreatWallonce.before.twice.threetimes.IhavealreadyvisitedtheGreatWall.IhavevisitedtheGreatWallalready.Ihaven'tvisitedtheGreatWallyet.IhavealreadyvisitedtheGreatWall.HaveyouvisitedtheGreatWallyet？变否定句：变一般疑问句：2.A:_____he_____(do)hishomework?B:No,he__________(notdo)ityet.Fillintheblanks.1.A:_____you_____(see)thefilm?B:Yes,I_____already_____(see)it.HaveseenhaveseenHasdonehasn'tIbegantoliveinSongtaotenyearsago.IstillliveinSongtaonow.IhavelivedinSongtaofortenyears现在完成时用法（二）现在完成时用来表示过去已经开始,持续到现在,也许还会继续下去的动作或状态。IhavelivedinSongtaofortenyears.IhavelivedinSongtaosincetenyearsago.IhavelivedinSongtaosince2003.IhavelivedinSongtaosinceImovedhere.for+一段时间since+一段时间+ago（自从……以前）since+过去的时间点（自从……以来）since+从句（过去时）Fillintheblankswithfororsince.5.Tony’sgrandmotherhasbeendead______2004.1.Wehaven’tseeneachother______alongtime.2.HisfatherhasbeenintheParty______10yearsago.3.Thefilmhasbee...