说出下列句子所使用的时态•1.Sheworksinaschool.•2.Areyoudoingyourhomeworknow?•3.Wearegoingtohaveapicnicthissunday.•4.Theydidn'tflytoBeijingyesterday.•5.Doyouoftenhavebreakfastat6:30?•6.Ihavealreadyfinishedmyhomework.现在完成时的构成•助动词have(has)+动词的过去分词•注：has用于第三人称单数，have用于其他所有人称。规则动词的过去分词变化与过去式相同，不规则变化则须单独记忆。现在完成时的句型•1.肯定句：主+have/has+动词过去分词+其他•2.否定句：主+haven't/hasn't+VPP+其他•3.一般疑问句：Have/Has+主+VPP+其他•回答:Yes,主+have/hasNo,主+haven't/hasn't.movelivelovelike写出下列动词的过去式和过去分词:visitrepairwatchfinishvisitedvisitedrepairedrepairedwatchedwatchedfinishedfinishedmovedmovedlivedlivedlovedlovedlikedlikedverb＋ed以e结尾＋d写出下列动词的过去式和过去分词:stopmoptrapplanstoppedstoppedmoppedmoppedtrappedtrappedplannedplanned注:以一个辅音字母结尾的重读闭音节词,双写最后一个辅音字母＋ed双写＋edstudyhurrystudiedstudiedhurriedhurried去y＋ied注:以辅音字母加y结尾的词,去y＋ied.写出下列动词的过去式和过去分词:begiveseemakeputcomewritewas/werebeengavegivensawseenmademadeputputcamecomewrotewritten1.现在完成时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。(汉语中常用“已经”、“过”、“了”等表达）通常与表示包括现在在内的时间副词just，already,before,yet,never,ever等状语连用。例如：①Ihaveneverheardofthatbefore.②Haveyoueverriddenahorse?③Shehasalreadyfinishedthework.④Haveyoumilkedthecowyet?Yes,Ihavedonethatalready.⑤I’vejustlostmymathbook.2.现在完成时表示过去已经开始，持续到现在,也许还会持续下去的动作或状态。可以和表示延续的时间状语连用。如for、since等引导的时间状语。（注意：句中谓语动词要用延续性动词）一段时间的表达方法有两种:for:+一段时间forayearfortwoweeksforthreeyears过去的某一时刻,sinceninesincelastweek一般过去时态的时间状语从句sinceyoucamesinceyougothome.注意:for和since所引导的时间状语都表示一段时间.Hehasbeenawaysincelastweek.Hehasbeenawayforoneweek.对划线部分提问都用HowlongSincesince和for:1)EddiehaslivedwithMilliesince2001.EddiehaslivedwithMilliesince4yearsago.EddiehaslivedwithMilliesincehewasborn.小结:since+时间点（词、词组或句子）2)EddiehaslivedwithMillieforfouryears.小结:for+时间段3)对以上句子划线部分提问:HowlonghasEddielivedwithMillie?1.WehavelearnedEnglish______GradeThreeinprimaryschool.WehavelearnedEnglish_______fiveyears.2.Hehasn’tfeltwell________lastnight.Hasheseenthedoctor?3.Ihavereadthisstorybook_______threedaysago.Ihaven’tfinishedreadingityet.选用since或for填空:sinceforsincesince4.Ithassnowed______twodays.Everythingiscoveredwithsnow.5.Wehavecleanedtheclassroom______halfanhour.6.Wehavestudiedatthisschool____2003.forforsince（（33））havebeen(to)havebeen(to)和和havegone(to)havegone(to)的区别：的区别：★have/hasbeen(to)表示“曾经到过某地”，说话时此人不在那里，已经回来。侧重指经历。★have/hasgone(to)表示某人“已经去某地了”，说话时此人可能在路上或已到那里，反正不在这里。试比较：试比较：HehasbeentoBeijing.他曾去过北京。（人已回来，可能在这儿）HehasgonetoBeijing.他已经去北京了。（人已走，不在这儿）。have/hasgonetohave/hasgonetohave/hasbeentohave/hasbeentohave/hasbeeninhave/hasbeeninhave/hasgoneto:已经去了或在途中，还没有返回；have/hasbeento:曾经去过某地，现在已经回来了,后面可接表示“次数”的状语;have/hasbeenin:表示某人“已在某地停留一段时间，现仍在那里”，其后常带表示一段时间的状语。presentpastIhavelivedherefortwoyearsIhavelivedherefortwoyearsIlived...
