英语人教版八年级下册现在完成时ppt.pptx

现在完成时Presentpertecttense制作人：翁庆华单位：汕尾市海丰县陶河中学学科：八年级英语适用教材：新人教版Goforit内容：Unit8,WehavealreadylearnttheMonkeyKing.HaveyouseenthefilmoftheMonkeyKingyet?Yes,Ihave.No,Ihavent.IhaventseenthefilmoftheMonkeyKingyet.,一、现在完成时的构成have+动词的过去分词has+动词的过去分词主语是第三人称单数eg.IhavestudiedEnglishfor5years.ShehasstudiedEnglishfor5years.,have+动词的过去分词has+动词的过去分词ShestudiedEnglishfor5years.,have,has,主语是第三人称单数,一、现在完成时的构成,1.构成:,eg.IstudiedEnglishfor5years.,IhaveboughtapresentforMary.IhaveboughtapresentforMary.youboughtapresentforMary?Yes,Ihave./No,Ihavent.,not,=havent,Have,2.句式,Shehaswrittenalettertoherfriend.Shehaswrittenalettertoherfriend.shewrittenalettertoherfriend？Yes,shehas./No,shehasnt.,=hasnt,Has,not,2.句式,肯定句：主语+have/has+动词的过去分词否定句：主语+havent/hasnt+动词的过去分词一般疑问句：Have/Has+主语+动词的过去分词.?Yes，have/has.No,havent/hasnt.,2.句式,work,worked,live,lived,carry,carried,stop,stopped,（1）规则变化,3.动词过去分词的构成,练一练,写出下列动词的过去分词形式lookmovecryplanstudyjoin,looked,cried,studied,moved,planned,joined,putputputbeatbeatbeatenlendlentlentbecomebecame-becomegowent-gone,(2)不规则变化,AAA,AAB,ABA,ABC,ABB,ABA,ABC,1.表示过去发生的某一动作对现在造成的影响或结果eg.Ihavealreadyfinishedmyhomework.2.表示过去已经开始，一直持续到现在并有可能继续延续下去的动作和状态eg.Wehavebeenfriendsfortenyears.,二、现在完成时的用法,already,just,yet,ever,never,before,for,since,sofar,inthepast/lastyears等already（还）（已经）Ihavewaitedforhimforanhour.Ihaventtalkedtohim.,already,yet,三、时间状语,yet,否定句,疑问句,肯定句,（已经）,for+时间段since+时间点现在完成时+since+一般过去时主句从句Wehavelivedheretenyears.Lindahastakendancinglessonsshewas5yearsold.Ihavebeenateacher2000.,for,since,since,三、时间状语,试一试,1.Ourschoolalotinthelastfewyears.A.changesB.changedC.willchangeD.haschanged2.Heinthisfactoryfor20yearsalready.A.willworkB.worksC.hasworkedD.isworking3.-Ihavetoldyourphonenumber.Hashecalledyou?-No,hehasntcalledme.A.just,;alreally;yetB.already;yet;yetC.already;already;yetD.just;already;already,试一试,4.MyfatherhaslivedinBeijinghewastenyearsold.A.forB.sinceC.fromD.in5.-Howlonghaveyoulivedinthist