英语人教版八年级下册现在完成时.ppt

现在完成时的讲解 五阳矿中学王娟 现在完成时 have has 过去分词1 表示到现在为止已经完成或刚刚完成的动作 Nowwehaveplantedallthetrees Hehasjustcomeback 2 表示过去发生的动作 但强调结果或对现在的影响 Haveyouhadyoursupper Ihavereadthebooktwicealready 在以上两种用法中常跟already not yet never just before ever recently等时间继续下去的状语 3 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 常与包括现在在内的一段时间的状语连用 HehasstudiedEnglishfor6years MaryhasbeenbusysinceshecamebackfromHangzhou 过去分词的构成 1 直接加 ed 如 play played2 以字母e结尾的直接加d 如 name named3 以辅音字母加y结尾的 变y为i加ed 如 carry carried4 重读闭音节且末尾只有一个辅音字母 双写这个辅音字母再加 ed 如 stop stopped5 不规则动词的变化需特殊记 现在完成时Presentperfect句型 1 肯定句现在完成时的肯定句式是 have has 过去分词 注意 该句式中的have或has是助动词 has用于第三人称单数 其它人称一律用have 2 疑问句现在完成时的一般疑问句式是把助动词have或has提到主语之前 回答用 Yes have has No haven t hasn t 3 否定句 现在完成时的否定句式是 haven t hasn t 过去分词 Ihaveeatenmylunch Shehaseatenherlunch Hehaseatenhislunch 肯定句 Theyhaveeatentheirlunch Ihavenot haven t seenthefilm Shehasnot hasn t seenthefilm 现在完成时的否定形式 havenot haven t 过去分词hasnot hasn t 过去分词 Ihaven teatensupper eat eatenHehasn tchangedhisidea change changedMymotherhasn e come 否定句 I vealreadyhaddinner I dinner 2 Hehasjustfinishedhishomework He hishomework 3 Mum scookedthedinner Mum thedinner 4 Susan slearnedEnglishatschool Susan Englishatschool haven t had yet hasn t finished yet hasn tcooked hasn t learned 把下列句子改为否定句 Haveyoueatenyourbreakfast 现在完成时的一般疑问句形式Have has提前 过去分词 HaveyouknownSandyforalongtime Yes Ihave No Ihaven t know knownHassheeatenanythingsince9 00a m Yes shehas No shehasn t eat eaten 疑问句 I vealreadyhaddinner 2 Hehasjustfinishedhishomework 3 Mum scookedthedinner 4 Susan slearnedEnglishatschool Haveyouhaddinneryet Hashejustfinishedhishomework Hasmumcookedthedinner HasSusanlearnedEnglishatschool 把下列句子改为一般疑问句 分清与一般过去时的用法现在完成时属于现在时态的范围 不能和表示过去的时间状语连用 如yesterday lastnight threeweeksago in1990等 而一般过去时只表示过去的动作或状态 和现在不发生关系 eg Ihaveseenthefilm eg Isawthefilmlastweek eg Hehaslivedheresince1993 eg Helivedherein1993 Notes 1 havebeento与havegonetohavebeento表示某人曾去过某地 说话时人已不在某地了 havegoneto表示某人已离开了原地 去了另外某地 说话时 人已不在原地 HehasbeentoXi antwice 他曾经去过西安两次 已经回来了 Youcan tfindhim HehasgonetoXian 你找不到他 他去西安了 没回来 动词填空 1 you clean theroom Yes we do thatalready When you do it We do itanhourago 2 he see thisfilmyet Yes When he see it He itlastweek 3 Howmanytimes you come here Once Have cleaned havedone did do did Has seen did see saw have come 4 I read thenoveltwice It sinteresting 5 She go toPairs hasn tshe Yes How she go there She go therebyair 6 Sofar manycountries develop theirsoftwareprograms 7 MrChen give upsmokinglastyear 8 youever ride ahorse Never 9 He keep thebooksincetwodaysago haveread hasgone did go went havedeveloped gave Have ridden haskept I vealreadyhaddinner 2 Hehasjustfinishedhishomework 3 Mum scookedthedinner 4 Susan slearnedEnglishatschool Whathaveyoualreadydone Whathashejustdone Whohascookedthedinner WherehasSusanlearnedEnglish 对划线部分提问 for 表示一段时间的词组 since 表示过去某一时刻的词或词组 谓语只可用延续性动词 eg I velivedherefor15years eg I velivedheresince15yearsago 1990 选用for和since填空 1 Wehaven tseeneachother alongtime 2 Hisfatherhasbeeninthefactory 10yearsago 3 Thefilmhasbeenon 20minutes 4 MrGreenhasworkedhere hecametoChina 5 Hisgrandparentshavebeendead severalyears 6 It sfiveyears wemetlasttime for since for since for since 练习题 1 It salongtimesincewe meet last isn tit 2 Iknowyou choose apicturebookamongthese Yes Havealookatit please 3 Sofar spaceshipswithoutpeople reach themoonandsomeotherpartsoftheuniverse 4 Myfathe