必修1module4Period4grammar

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1、Grammar现在完成时(Presentperfecttense)hearsongsteachtwoweeksWehavealreadyheardmanysongsofJayZhou.2.TheEnglishteacherhastaughtusfortwoweeks.1.SofarwehavealreadyheardmanysongsofJayZhou.2.TheEnglishteacherhastaughtusfortwoweeks.现在完成时的基本用法主要体现在两个方面，一是表示________发生或已经完

2、成的某一动作对________造成的影响或结果，如句1，常与just,ever,________,_______,________等词连用；二是表示从__________已经开始，并和________有着千丝万缕的关系，如句2，常与________,________等连用。过去现在过去现在alreadyrecentlyneverforsinceNowyouareseniorhighstudentsinShuangliuMiddleSchool.1.Howlonghaveyoubeenhere?Ihavebeen

3、herefor…2.Howlonghaveyouknownyourdeskmate?Ihaveknownhim/herfor…3.Whatkindofactivityhaveyoutakenpartinafterschool?Ihavetakenpartin…Decidewhichsentences…A.describeeventsthatcontinueoveraperiodoftimeB.describeeventsthathappenataparticularpointintime1.Luoxinhask

4、nownLiuYitongfor6years.2.Andyou’vestudiedherefor3years.3.SomestudentshavesetuptheEnglishclub.4.Luoxinhasjoinedtheclub.ABBAPuttheverbsintotwogroups.A.verbstodescribeeventsthatcancontinueoveraperiodoftime.B.verbstodescribeeventsthathappenataparticularpointinti

5、me.borrowbuyknowleaveliveremainstaydieA:B:borrowbuyknowliveremainstayleavedieConclusion:延续性动词表示能够延续的动作,这种动作可以延续下去或产生持久影响.终止性动词表示不能延续的动作,这种动作发生后立即结束。延续性动词能跟_______连用，而终止性动词______。时间段不能终止性动词的肯定式不能和表示一段时间的时间状语连用，但可以用相应的表示延续状态的动词替换.终止性动词borrowbuyleavedie状态性短语kee

6、phavebeawaybedeadChoosethecorrectanswers.1.Mybrotherhas___thearmyforfiveyears.Heusesmostofhissparetimetolearnmaths.A.joinedinB.joinedc.beentoD.beenin2.GuoJingming____articlestheseyearsandsofarhe____manyfamousarticles.haswritten;wroteB.wrote;haswrittenhasbeen

7、writing;hasbeenwritinghasbeenwriting;haswrittenWehavelearntthepastsimpletense(一般过去时)andpresentperfecttense.Thetwotensesareoftenconfused.Doyouknowthedifferencesbetweenthem?Comparethetensesoftwosentences.TianLiangwasanathleteseveralyearsago.(说明他过去是个运动员。)Nowheh

8、asbecomeastar.(现在他变成了一个明星。)前者表示的是过去的动作对现在的影响，而后者则只是表示过去有这一动作的事实。现在完成时与一般过去时的区别:Nowwehaveknownthedifferencesbetweenthetwotensesaccordingtothedefinition.(定义)Whatdifferenttimeexpressionsareusedindi