江苏省东海县横沟中学八年级英语下册 Unit 1 Past and Present现在完成时课件 （新版）牛津版.ppt

presentperfecttense 现在完成时态 一 现在完成时谓语动词的构成 助动词have has not v ed 过去分词 i finish thecompositionalready he learn englishforthreeyears we you they she havefinished haslearned 现在完成时态的含义是表示过去发生的或已完成的动作对现在造成的影响或结果 特点是既涉及过去 又联系现在 动作是过去发生的 结果是现在存在的 shehasgone 她走了 从这句话中动词所用的现在完成时态可以看出 走 的动作是过去发生的 而对现在所造成的结果是她不在这里了 hespeaksfrenchsofluently helearneditinparis hewastherefortwoyears hehasstudiedfrench 他学过法语 这句话所说明的结果是他现在懂法语 look theblackboardissocleannow hehascleanedtheblackboard 他已经擦过黑板了 这句话所表示的结果是黑板现在是干净的 这种用法常与already just yet ever never before 句末 等连用 i do myhomeworkalready he notfinished hishomeworkyet youever be tobeijing we never see suchanexcitingmatchbefore mother just clean thehouse pleasedon tcomein they practice thisdialoguetwice havedone hasnotfinished have been have seen has cleaned havepracticed 注意 当在肯定陈述句中含有already或just时 在转换成否定句或疑问句时 要把句中的already或just去掉 在句末加上yet ihaven tseenthefilmyet ihavedonemyhomeworkalready ihaven tdonemyhomeworkyet motherhasjustcleanedthehouse motherhasn tcleanedthehouseyet ihaveseenthefilmalready 用法2 表示动作或状态从过去开始一直延续到现在甚至将来 mikeborrowedthebookstwodaysago mikehaskeptthebooksfortwodays 切记有些动词是非延续的 在此用法中要换成其相对应的延续性动词 buyborrowopencloseleavediejoinbegin have keep beopen beclosed beaway bedead beamemberof beon get come arrive getup finish wake fallill become catchacold beinbeup beoverbeawake beillbe haveacold 电影已开始十分钟了 这工厂开业一年了 他参军有3年了 这辆车你买了多久了 jim离开家乡 年了 他们到北京有两天了 thefilm for10minutes thefactoryhas foroneyear he thearmysince3yearsago howlonghaveyou thecar jimhas hishometownfor10years hehas inbeijingsince 标志词 for 一段时间 since 过去的时间点 theseyears sofar inthepast last years we learn englishforthreeyears sincetwoyearsago since2000 mr green be inchinatheseyears they write 15songssofar thepopulation grow moreslowlyinthepasttenyears havelearned hasbeen havewritten hasgrown have hasgoneto have hasbeenin have hasbeento 1 a where sjim lilei b he hisschoollibrary 2 thegreens chinaforthreeyears we thegreatwalltwice it sverybeautiful hasgoneto havebeenin havebeento b a a b bstay a 她以前曾去过上海 shehasbeentoshanghaibefore 他在上海10年了 shehasbeeninshanghaifortenyears 他去上海了 hehasgonetoshanghai 现在完成时和一般过去时的区别 现在完成时 强调这一动作产生的结果对现在的影响 与现在有关 一般过去时 仅仅表示在过去某一时刻曾发生过这一动作 与现在无关 他已学英语五年了 hehasstudiedenglishforfiveyears 他曾学过五年英语 hestudiedenglishforfiveyears 说明他还继续学下去 只说明他过去学过五年英语 但现在不学了 一般过去时与现在完成时有一些明显的时间状语 遇到yesterday lastyear inmay in 过去某一年 twodaysago theotherday justnow等就用一般过去时 当有sofar inthepast lastfewdays 在过去 最近的几年里 since接过去时间状语或过去时的句子等常用现在完成时 现在完成时和一般过去时 he work inourschoolforoneyear he come toourschoollastyear in2002 they cook thesupperalready they cook thesupperhalfanhourago hasworked came havecooked cooked 写出下列动词的过去分词1 have 2 see 3 eat 4 change 5 know 6 live 7 turn 8 become 9 move 10 be 11 make 12 give 用for since填空 wehavebeenfriends weweresevenyearsold 2 ihaveknowndaniel sevenyears 3 wehavelearnedenglish morethanoneyear 4 thegreenfamilyhavelivedinthisstreet 1995 5 mr wanghastaughtinthisschool tenyears chinahas thewtoforsomeyears a takenpartinb joinedc beenamemberofd entered2 whendidyou thenewmotor bike well i itforhalfamonth a have haveboughtb buy havehadc buy haveboughtd have havehad3 i tocanadatwice it ssobeautiful a won tgob havegonec don tgod havebeen4 whereisyoufather he toaustraliaonbusiness a hasbeenb hasgonec wentd willgo5 youareleavingyouschool howdoyoulikeit verymuch ofcourse i thisschoolsinceimovedhere a cametob havegonetoc havebeenatd havebeento 用所给动词的适当形式填空 1 look thechildren plant flowersinthegarden 2 i know theplaceformanyyears 3 whereismypen howstrange it be herejustamomentago 4 he give thebookbacktoyouifhe finish readingittomorrow 5 mrdongoften meet upwithhisfriendsinthenewpark 6 howlong you live innanjingsinceyouwere bear 7 theyonly meet once buttheywere like oldfriends 8 tomwithhisfamily