新概念英語_第2冊_第4課_Lesson_4__ppt課件

.,Lesson4,Travel,Anexcitingtrip,.,Haveyoueverbeenabroad?,HaveyouheardofAustralia?,WhatdidyouknowaboutAustralia?,.,Austalia,.,I.Keywordsexciting,receive,firm,differentII.KeystructuresThepresentperfectsimple現(xiàn)在完成時,keypoints,.,Newwordsandexpressions,.,excitingadj.令人興奮的receivev.接受，收到firmn.商行，公司differentadj.不同的centren.中心abroadadv.在國外,【Newwordsandexpressions】生詞和短語,.,Languagepoints,1.Ihavejustreceivedaletterfrommybrother.,收到某人來信,2.Heisworkingforabigfirm.,getaletterfromsb.havealetterfromsb.hearfromsb.,在上班、任職,還可以用workat/in,e.g.Myfatherworksforabusinesscompany.,.,3.hehasalreadyvisitedagreatnumberofdifferentplacesinAustralia.,anumberof+可數(shù)名詞的復數(shù)，number前一般可用large,great,small等形容詞強調數(shù)量大小。,.,Mybrotherhasneverbeenabroadbefore,soheisfindingthistripveryexciting.,abroadadv.在國外（副詞,直接和動詞連用）goabroad去國外liveabroad國外定居,exciting,adj.令人興奮的,excited感到興奮的,-ed自己感到interested,bored,relaxed-ing令人感到interesting,boring,relaxing,.,Languagepoints,4.HehasjustboughtanAustraliancarandhasgonetoAlicesprings.,Hehasgonetothesouth.(還在)Hehasbeentothesouth.(去過),5.Heisfindingthistripveryexciting.,find+n+adj.覺得怎么樣,e.g.Ifindthefilmboring.Doyoufindthebookveryinteresting?,.,Listenandfollow,.,1.HowlonghasTimbeeninAustralia?,Listenandanswerthequestion.,TimhasbeeninAustraliaforsixmonths.,2.WhatdoeshedoinAustralia?,Heisworkingforabigfirmasanengineer.,3.WhyisTimfindingthetripexciting?,BecauseTimhasneverbeenabroadbefore.Thisishisfirsttripabroad.,.,Summarywriting,Answerthesequestionsinnotmorethan50words.,Whathasthewriterjustreceivedfromhisbrother?2.IsTimanengineer,orisheadoctor?3.HowlonghashebeeninAustralia?4.Hashealreadyvisitedmanyplacesornot?5.Whereishenow?6.HasTimeverbeenabroadbeforeornot?7.Isheenjoyinghistripverymuchornot?,.,Summarywriting,Thewriterhasjustreceivedaletterfromhisbrother,Tim.Timisanengineer.HehasbeeninAustraliaforsixmonths.Hehasalreadyvisitedmanyplaces.NowheisinAliceSprings.Timhasneverbeenabroadbefore.Heisenjoyinghistripverymuch.,.,現(xiàn)在完成時態(tài),Winterhasalreadycome.,Grammar,.,現(xiàn)在完成時的構成形式,havedonehas,助動詞,過去分詞,Grammar,.,用來表示動作或狀態(tài)發(fā)生在過去,但它的影響現(xiàn)在還存在。Theyhaveleft.-他們已經(jīng)離開了,也就是說現(xiàn)在他們人不在這里Ihavehadmylunch.-我已經(jīng)吃過午飯了,也就是說我現(xiàn)在不餓,現(xiàn)在完成時的含義,也可表示持續(xù)到現(xiàn)在的動作或狀態(tài)。HehaslearnedEnglishsince2001.-從2001年開始學的,現(xiàn)在還在繼續(xù)學著呢,.,sumup,一、現(xiàn)在完成時,1)構成,肯定句：主語+have/has+過去分詞+其它,否定句：主語+have/hasnot+過去分詞+其它,疑問句：Have/Has+主語+過去分詞+其它,HehasbeentoAustralia.,HehasnotbeentoAustralia.,HashebeentoAustralia?,.,now,past,future,一般過去時,一般過去時表示的是純粹在過去發(fā)生的事情現(xiàn)在完成時表示的是在過去某個時間開始并持續(xù)到現(xiàn)在的動作/狀態(tài),或者發(fā)生在過去卻對現(xiàn)在造成的影響,Grammar,.,現(xiàn)在完成時與一般過去時的比較,1）一般過去時表示過去某時發(fā)生的動作或單純敘述過去的事情，強調動作；現(xiàn)在完成時為過去發(fā)生的，強調過去的事情對現(xiàn)在的影響，強調的是影響。,Isawthisfilmyesterday.（強調看的動作發(fā)生過了。）Ihaveseenthisfilm.(強調對現(xiàn)在的影響，電影的內容已經(jīng)知道了。）,.,參考譯文我剛剛收到弟弟蒂姆的來信，他正在澳大利亞。他在那兒已經(jīng)住了6個月了。蒂姆是個工程師，正在為一家大公司工作，并且已經(jīng)去過澳大利亞的不少地方了。他剛買了一輛澳大利亞小汽車，現(xiàn)在去了澳大利亞中部的小鎮(zhèn)艾利斯斯普林斯。他不久還將到達爾文去，從那里，他再飛往珀斯。我弟弟以前從未出過國，因此，他覺得這次旅行非常激動人心。,.,Thankyou!,.,.,2一般過去時常與具體的表示過去的時間狀語連用;現(xiàn)在完成時通常與模糊時間狀語連用或無時間狀語。,一般過去時的時間狀語:yesterday,lastweek，ago,in1990,inOctober,justnow,-具體的時間狀語現(xiàn)在完成時的時間狀語:for,since,sofar,ever,never,just,yet,till/until,uptonow,inthepastfewyears,recently,-模糊的時間狀語,句子中如有過去時的時間副詞（如yesterday,last,week,in1960）時，不能使用現(xiàn)在完成時，要用過去時錯Tomhaswrittenalettertohisparentslastnight.對Tomwrotealettertohisparentslastnight.,Grammar,.,3現(xiàn)在完成時可表示持續(xù)到現(xiàn)在的動作或狀態(tài),動詞一般是延續(xù)性的,如live,teach,learn,work,study,know.一般過去時常用的非持續(xù)性動詞有come,go,leave,start,die,finish,become,getmarried等。,ShejoinedtheLeaguethreeyearsago.(加入的動作不是延續(xù)的)ShehasbeenintheLeagueforthreeyears(sincethreeyearsago).(在團內的狀態(tài)可延續(xù))ShehasbeenaLeaguememberforthreeyears(sincethreeyearsago).(是團員的狀態(tài)可持續(xù)),Grammar,.,延續(xù)動詞表示經(jīng)驗、經(jīng)歷；瞬間動詞表示行為的結果,不能與表示一段時間的狀語連用。,比較延續(xù)動詞與瞬間動詞,Hehasfinishedthework.他已完成了那項工作。(表結果)Iveknownhimsincethen.我從那時起就認識他了。(表經(jīng)歷),Grammar,.,since用來說明動作起始時間“自從”for用來說明動作延續(xù)時間長度“長達”Ihavelivedhereformorethantwentyyears.IhavelivedheresinceIwasborn.Myaunthasworkedinacompanysince1949.Ihavenotheardfrommyuncleforalongtime.,比較since和for,并非有for作為時間狀語的句子都用現(xiàn)在完成時Iworkedhereformorethantwentyyears.(我現(xiàn)在已不在這里工作。)Ihaveworkedhereformanyyears.(現(xiàn)在我仍在這里工作。),Grammar,.,HehasgonetoShanghai.他(已經(jīng))去上海了。,HehasbeentoShanghai.他(曾經(jīng))去過上海。,比較have/hasbeento,have/hasgoneto,Grammar,.,Hedied10yearsago.-He_for10years/since10yearsago.2.Heborrowedthebook2weeksago.-He_thebookfor2weeks.3.Heboughtthemotorbikeamonthago.-He_themotorbikeforamonth.4.Hearrivedherethreedaysago.-He_heresincethreedaysago.5.Theyturnedoffthelight2hoursago.-Thelight_for2hours.6.Helefthere2yearsago.-He_fromherefor2years.7.Thefilmbegan30minutesago.-Thefilm_for30minutes.8.Theyopenedthedooranhourago.-Thedoor_foranhour.9.Theyclosedthedooranhourago.-Thedoor_foranhour.10.Hejoinedthearmylastyear.-He_a_forayear.-He_thearmyforayear.-It_ayear_hejoinedthearmy.,延續(xù)性動詞和瞬間性動詞之間的轉化,Exercise,.,sumup,2)用法,1.過去發(fā)生的動作對現(xiàn)在的影響或產生的結果。常與表示時間的副詞連用，如yet,just,before,recently,ever,never等。,e.g.Wehavejustwonthematch.IhaveneverbeentoAustraliabefore.,一、現(xiàn)在完成時,.,sumup,2)用法,1.表示從過去開始延續(xù)到現(xiàn)在的動作或狀態(tài)，常與表示一段時間的時間狀態(tài)連用，如sofar,uptillnow,since,foralongtime,inthepastfewyears,thosedays等。,e.g.Sofar,hehasbrokentwoworldrecords.Ihaveworkedherefor