现在完成时语法课.ppt

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1、语法课堂上一页现在完成时下一页主菜单现在完成时学习任务2运用现在完成时进行英语交际主菜单上一页下一页现在完成时的构成现在完成时的主要用法现在完成时的时间状语短暂性动词与时间段的关系havebeen与havegone比较与一般过去时的用法比较学习任务1Howlonghasshebeenplayingcomputer?(fourhours)Shehasbeenplayingcomputerforfourhours.2hoursHowlonghasshebeenreading?Shehasbeenreadingfor2hours

2、.Shehasbeenreadingsince2hoursago.45minutesHowlonghavetheybeenplayingsoccer?Theyhavebeenplayingsoccerfor45minutes.playingsoccerhave/has是助动词been是be的过去分词表示从过去开始一直持续到现在的动作，并有可能持续下去．时态－现在完成进行时（一）构成形式：have/hasbeen+Vingfor+一段时间have/hasbeen+doingsth+since+过去的时间点since+从句(一

3、般过去时)WangLihong’ssinginglife1976wasborn1996startedsinginghasbeensinging16years2013singsHehasbeensingingfor16years.Hehasbeensingingsince1996.HowlonghasWangLihongbeensinging?WhendidWangLihongstartsinging?Hestartredsingingin1996.Mother:John,cleanyourteethplease.John:

4、Mum,Ihavealready(已经)cleanedthem.现在完成时的构成主菜单上一页下一页have(has）+过去分词过去分词的构成上一页下一页Typeoriginalp.tp.pcutcutcuthit(撞击)hithitcostcostcosthurthurthurtPut(放)putputreadreadreadAAA主菜单meetmetmetkeepkeptkeptmakemademadebringbroughtbroughtbuyboughtboughtthinkthoughtthoughtteachta

5、ughttaughttelltoldtoldlendlentlentspendspentspentfindfoundfoundhearheardheardbuildbuiltbuiltABBbeginbeganbegunsingsangsungdrinkdrankdrunkswimswamswumspeakspokespokenchoosechosechosenknowknewknownforgetforgotforgottenbreakbrokebrokendrivedrovedrivengivegavegiveneat

6、ateeatenwritewrotewrittenABCseesawseengowentgonetaketooktakenrideroderiddenwakewokewakengrowgrewgrowndrawdrewdrawnhidehidhiddenABC现在完成时的基本句型：肯定式：主语+助动词have/has+动词的过去分词.疑问式：助动词Have/Has+主语+动词的过去分词?否定式:主语+助动词have/has+not+动词的过去分词.现在完成时的主要用法上一页下一页--It’ssodark.--Someone

7、hasturnedoffthelight.(有人刚把灯关了,对现在造成的结果是:现在很黑)--Areyoufree?--Ihavefinishedmyhomework.Iamfree(我已经完成了家庭作业,对现在造成的结果是很有空)主菜单1.表示过去发生的某一动作对现在造成的影响或结果。现在完成时的运用(1):1．在表示“用法1”时，现在完成时常和副词already,yet,never,ever,before,just等连用。.a）already往往用于肯定句，用在疑问句时表示强调或加强语气；yet用于否定句和疑问句。He

8、hasalreadylefthere.他已经离开这里了。Hashealreadylefthere?他（真的）已经离开这里了吗？（表示加强语气）Myteachershaven’thadbreakfastyet.我的老师们还没有吃早饭。Haveyouwrittentoyourparentsyet?你