8B英语一般过去时与现在完成时的区别ppt课件

ThePresentTense英语课件英语课件1一一.表示从过去某一时刻开始并一直延续到现在的动作表示从过去某一时刻开始并一直延续到现在的动作或事情或事情,但动作或事情现在已经结束。但动作或事情现在已经结束。eg：1.Someonehasjustturnedoffthelight.有人刚把灯关了。有人刚把灯关了。2.Ihavealreadyfinishedmyhomework.我已经完成了家作。我已经完成了家作。二二.表示从过去某一时刻开始并一直延续到现在的动作表示从过去某一时刻开始并一直延续到现在的动作或事情或事情,但动作或事情可能仍在继续。但动作或事情可能仍在继续。一.表示从过去某一时刻开始并一直延续到现在的动作或事情,但动2eg：1.IwanttoseehowmuchtheplacechangedsinceIsawitlast.我想看看从上次见到那地方以来它发生了多大变化。我想看看从上次见到那地方以来它发生了多大变化。2.IhavelearntEnglishformorethantenyears.我已经学了我已经学了1010多年的英语。多年的英语。三三.表示人曾有过或到目前为止从未有过的经历表示人曾有过或到目前为止从未有过的经历.eg：1.HaveyoueverbeentotheSummarPalace?你曾去过颐和园吗你曾去过颐和园吗?2.Ihaveneverhadacar.我从未有过汽车。我从未有过汽车。eg：1.I want to see how much t3四四.现在完成时还常与句型现在完成时还常与句型 This is the first time，Its the first time 连用。连用。eg：1.Thisisthefirsttimehehasdrivenacar.这是他第一次开车。这是他第一次开车。五五.现在完成时和最高级连用表示到现在为止是最现在完成时和最高级连用表示到现在为止是最的。的。Whataboringfilm！ItsthemostboringfilmIveeverseen.现在完成时除了上述主要用法之外，还有一些其它用现在完成时除了上述主要用法之外，还有一些其它用法，在此不一一讲解，请学生自已学习、掌握。法，在此不一一讲解，请学生自已学习、掌握。一部多么令人厌烦的电影啊！一部多么令人厌烦的电影啊！这是我看过的最令人厌烦的电影。这是我看过的最令人厌烦的电影。四.现在完成时还常与句型 This is the first4现在完成时与一般过去时的区别现在完成时与一般过去时的区别5第第一一单单元元已已讲讲解解了了现现在在完完成成时时，在在第第一一册册中中也也已已讲讲解解了了一一般般过过去去时时的的主主要要用用法法。现现将将这这两两种种时时态态的的用用法法加加以以区区别别，以以便便使使学学生生更更好好地地掌掌握握，区区别别两两者者的的不同用法。不同用法。第一单元已讲解了现在完成时，在第一册中也已讲解了一般过去时的6一一.现在完成时和一般过去时都是现在完成时和一般过去时都是说过去的事情，但现在完成时注意说过去的事情，但现在完成时注意的不是事情本身，而是强调事情与的不是事情本身，而是强调事情与现在保持的某种密切联系（如现在现在保持的某种密切联系（如现在的结果，影响的结果，影响,一直延续到现在等）一直延续到现在等）;而一般过去时，则只表示发生在而一般过去时，则只表示发生在过去的动作和事情与现在没有关系过去的动作和事情与现在没有关系。一.现在完成时和一般过去时都是说过去的事情，但现在完成时注意7eg：1.He has bought an English-Chinese dictionary.他已经他已经买了一本英汉字典。买了一本英汉字典。eg：2.HeboughtanEnglish-Chinesedictionary.他曾他曾买过一本英汉字典。买过一本英汉字典。第一句用现在完成时时态，意为：第一句用现在完成时时态，意为：“HeboughtanEnglish-Chinesedictionary.Andhestillhasit”“过去他买过去他买了一本英汉字典，现在他还有这本字典了一本英汉字典，现在他还有这本字典”。第第二二句句用用过过去去时时只只叙叙述述过过去去他他买买过过一一本本英英汉汉字字典典这这一一事实，至于现在他是否有这本字典并未强调说明。事实，至于现在他是否有这本字典并未强调说明。eg：1.He has bought an Englis8二当有一个表示过去某一特定时间的状语时，不二当有一个表示过去某一特定时间的状语时，不用现在完成时，而用一般过去时用现在完成时，而用一般过去时:eg：1.Isawthefilmontelevisionyesterday.但但since(since(自自以以来来)+)+某某一一过过去去时时间间或或叙叙述述过过去去事事情情的的从句总是与现在完成时连用。从句总是与现在完成时连用。eg：1.Theyhaveknowneachothersince1950.2.Sincehewasachild,hehaslivedinEngland.二当有一个表示过去某一特定时间的状语时，不用现在完成时，而9三常与一般过去时连用的典型的表示过去时间的状语三常与一般过去时连用的典型的表示过去时间的状语yesterday(昨昨天天),theotherday(前前两两天天),justnow(刚刚才才)，时间时间+ago,last+时间时间;etc;eg:1.Theplanetookofftenminutesago飞机十分钟前起飞了。飞机十分钟前起飞了。eg:2.Wefinishedourtasklastweek.我们上周完成了我们的任务。我们上周完成了我们的任务。三常与一般过去时连用的典型的表示过去时间的状语yester10四常与现在完成时连用的表示到现在为止这段四常与现在完成时连用的表示到现在为止这段时间的词短语或从句时间的词短语或从句:sofar(到到现现在在为为止止)，upto(till,until)now直直到到现现在在，lately（最最近近）yet,since+过过去去时时间间或或叙叙述述过过去事情的从句。去事情的从句。eg：1.Theweatherhasbeenhotsofarthissummer 到目前为止，今夏天气一直很热。到目前为止，今夏天气一直很热。2.Ihaventseenheryet.我还未见到过她。我还未见到过她。四常与现在完成时连用的表示到现在为止这段时间的词短语或从11五可与现在完成时连用，也可与一般过去时连用五可与现在完成时连用，也可与一般过去时连用 的时间状语：的时间状语：for+时间时间，this+时间时间表示不确定时间：表示不确定时间：ever,never,before,just,recently,already五可与现在完成时连用，也可与一般过去时连用for+时间 12eg:1.IhavelearntEnglishforthreeyears.我学英语（到现在）三年了（仍在学）。我学英语（到现在）三年了（仍在学）。2.IlearntEnglishforthreeyears.我学了三年英语（现在不学了）。我学了三年英语（现在不学了）。3.Ihavewrittentwolettersthismorning今天上午我写了两封信，今天上午我写了两封信，(说话时仍是上午说话时仍是上午)。4.Iwrotetwolettersthismorning.今天上午我写了两封信，（下午或晚上说的）。今天上午我写了两封信，（下午或晚上说的）。注注：表表示示不不确确定定时时间间的的状状语语，在在句句中中无无其其它它特特定定的的过过去去时时间间状状语语时时，或或无无表表示示过过去去动动作作的的从从句句时时常常与与现现在在完成时连用。完成时连用。eg:1.Ihavenotwrittentomyparentsrecently.我最近一直未给父母写信我最近一直未给父母写信。2.Ihavemethimmanytimesbefore.我以前见过他多次。我以前见过他多次。eg:1.I have learnt English f13现在完成进行时的主要用法现在完成进行时的主要用法14表示一个持续了一段时间，刚刚结束或仍在继续进行的表示一个持续了一段时间，刚刚结束或仍在继续进行的动作。与现在完成时有所有同的是现在完成进行时强调动作。与现在完成时有所有同的是现在完成进行时强调动作本身或动作的持续性、持久性动作本身或动作的持续性、持久性。eg：1.Wevebeenlookingforyoueverywhere.wherehaveyoubeen?我们一直在到处找你，你上哪儿去了？我们一直在到处找你，你上哪儿去了？2.Whathaveyoubeendoing?你一直在做什么？你一直在做什么？3.Ivebeenwritingalaboratoryreport.我一直在写实验报告。我一直在写实验报告。表示一个持续了一段时间，刚刚结束或仍在继续进行的动作。与现在15PART B:EXERCISESPART B:EXERCISESPART B:EXERCISES16 一.Find the choice:1.When I was at school,I_to the library every day.A.go B.was going C.have goneD.went2.The new books_yet.A.havent arrived B.hast arrived C.didnt arrive D.dont arrive3._you ever_to shanghai.A.Havent arrived B.Hasnt arrived C.Didnt arrived D.Havebeen 一.Find the choice:174.He_his lunch.A.had B.have had C.has had D.ate5.For years,doctors_millions of patients lives with the help of microscopes.A.saved B.have saved C.has saved D.were saving4.He_his lunch.186.I was so happy to see John again last Sunday,We _each other for more than two years.A.havent seen B.hadnt seen C.didnt see D.hasnt seen7.We _three lessons this month.A.have learned B.learned C.has learned D.were having6.I was so happy to see John a198.I_to Paris several times.A.went B.have gone C.have been D.was going9.Alice _ in china for ten years.A.has lived B.have lived C.lived D.has live 8.I_to Paris several time2010.My uncle _in this city since 1980.A.lives B.have lived C.has lived D.lived11.By now old Wang _in that factory for twenty years.A.have worked B.worked C.works D.has worked10.My uncle _in this city s2112.Christianity(基督教基督教)has become a worldwide religion(宗教宗教)since it _almost two years ago.A.begin B.begins C.began D.has begin13.Shakespeare _many plays such as Hamlet,and Romeo And Juliet.A.writes B.have written C.wrote D.has written12.Christianity(基督教)has becom2214.When we lived in phoenix we _at Arizona State university.A.studied B.have studied C.study D.were studying15.I wrote to my parents three month ago but I_to my parents lately.A.havent written B.dont write C.didnt write D.will not write14.When we lived in phoenix we2316.Li Ming _to Shanghai.He will be back next month.A.went B.have gone C.has gone D.will go 17.She _an actress for some time.A.was B.being C.is D.has been16.Li Ming _to Shanghai.He2418.Professor Chen _our exams yet.A.didnt mark B.hasntmarked C.will not mark D.havent marked19.He left last year and_away ever since.A.is B.have been C.was D.has been20.I_my task the other day.A.finished B.have finished C.finish D.will finish 18.Professor Chen _our exam25二.choose the one that is wrong:1.I lived in this city since I was a child.2.I lost my pen,I have to write with a pencil.3.Hangzhou is the most beautiful city I saw.4.She has read the book last week.C二.choose the one that is wron265.My classmates and I have visited the memorial hall of chairman Mao yesterday.6.My grandmother has lived with us since my grandfather has died six years ago.5.My classmates and I have vis277.After breakfast she takes a walk to buy the morning paper she does this every morning for ten years.8.It was very hot lately,but its beginning to get a bit cooler.9.Have you gone to the great wall?Yes,I have,I went there last Sunday.7.After breakfast she takes a 28三.Fill in the blanks For the last three days I 1_(work)hard.When we moved in three days ago,everything was in a mess,but now I 2 almost(finish)the job.Today I 3(work)since breakfast and 4(not have)anything to eat.Anne 5(bring)me a sandwich an hour ago but I 6(tell)her not to come into the kitchen.三.Fill in the blanks 29I 7(never,forget)what 8 (happen)several years ago when she tried to help me,I 9(hot have)many accidents since then but Anne 10(often,warn)me to be careful.she 11(warn)me again this morning at breakfast time,I 7(never,forget)what 8 (ha30but I 12(work)for four hours and nothing 13(go)wrong.Now I 14(drop)the tin of paint.Has anything like that ever happened to you？but I 12(work)for four hours 31 练习参考答案一.1.D 2.A 3.D 4.C 5.B 6.A 7.A8.C 9.D 10.C 11.D 12.C13.C14.A15.A 16.C 17.D 18.B 19.D 20.A 二.1.A 2.A 3.D 4.A 5.B 6.C 7.C 8.A 9.B 10.B 1.lived-have lived2.lost-have lost 3.saw-have seen 4.has read-read 325.have visited-visited6.has died-died 7.does-has done8.was-has been 9.gone-been三.1.have been working 2.have finished 3.have been working 4.have not had 5.brought6.told7.have never forgotten8.happened 9.have not had 10.has often warned 11.warned 12.have been working 13.has gone14.have dropped8B英语一般过去时与现在完成时的区别ppt课件33THE END34