英语人教八年级下册现在完成时专题讲解.pptx
会计学1英语人教八年级下册现在完成时专题讲解英语人教八年级下册现在完成时专题讲解现在完成时现在完成时 主菜单上一页下一页现在完成时的构成现在完成时的构成现在完成时的主要用法现在完成时的主要用法现在完成时的时间状语现在完成时的时间状语havebeen与与havegone比较比较与一般过去时的用法比较与一般过去时的用法比较第1页/共22页 现在完成时的构成现在完成时的构成现在完成时的构成现在完成时的构成主菜单上一页下一页have(hashave(has）+过去分词过去分词第2页/共22页present(now)futurepast 现在完成时现在完成时(present perfect tense)do my homework 第3页/共22页Mother:John,cleanyourteethplease.John:Mum,Ihavehavealreadyalready(已经已经已经已经)cleaned)cleanedthem.第4页/共22页现在完成时的基本句型：现在完成时的基本句型：现在完成时的基本句型：现在完成时的基本句型：肯定式：肯定式：肯定式：肯定式：主语主语 +助动词助动词have/hashave/has+动词的过去分词动词的过去分词.疑问式：疑问式：疑问式：疑问式：助动词助动词Have/HasHave/Has+主语主语 +动词的过去分词动词的过去分词?否定式否定式否定式否定式:主语主语 +助动词助动词have/has+nothave/has+not+动词的过去分动词的过去分词词.第5页/共22页现在完成时的现在完成时的时间状语时间状语常与常与常与常与already,already,already,already,never,never,never,never,ever,ever,ever,ever,just,just,just,just,yet,yet,yet,yet,before,before,before,before,up to now,up to now,up to now,up to now,so far,so far,so far,so far,forforforfor the last few weeks the last few weeks the last few weeks the last few weeks these days,these days,these days,these days,since since since since for a long timefor a long timefor a long timefor a long time 连用连用连用连用上一页下一页主菜单第6页/共22页现在完成时的主要用法现在完成时的主要用法上一页下一页-It-Its so dark.s so dark.-Someone has turned off the light.-Someone has turned off the light.(有人刚把灯关了有人刚把灯关了,对现在造成的结果是对现在造成的结果是:现在很黑现在很黑)-Areyoufree?-I have finished my homework.I am free-I have finished my homework.I am free(我已我已经经完成了家庭作完成了家庭作业业,对现在造成的结果是很有空对现在造成的结果是很有空)主菜单1.1.表示过去发生的某一动作对现在造成的影响或结果。表示过去发生的某一动作对现在造成的影响或结果。第7页/共22页2 2.表示人曾有过或到目前为止从表示人曾有过或到目前为止从未有过的未有过的经历经历.上一页下一页I haveI have ever ever beenbeen to the Summer Palace?to the Summer Palace?(我曾去过颐和园我曾去过颐和园)I I havehave never never had had a car.a car.(我从未有过汽车。我从未有过汽车。)现在完成时的主要用法现在完成时的主要用法主菜单第8页/共22页上一页下一页I have learnt English for more than I have learnt English for more than ten years.ten years.我已经学了我已经学了10多年的英语。多年的英语。(从从10年前开始年前开始,持续到现在还在学持续到现在还在学)Shehasswumsincehalfanhourago.我已经游泳了半个小时我已经游泳了半个小时(半个小时前已经开始游泳半个小时前已经开始游泳,到现在还在游到现在还在游)现在完成时的主要用法现在完成时的主要用法主菜单3 3.表示表示过去过去已经开始已经开始,持续到持续到现在的动作或状现在的动作或状态态.常与常与since+since+过去的时间点，过去的时间点，for+for+一段时一段时间，间，so far so far 等时间状语连用。等时间状语连用。第9页/共22页since:(自自以来以来)1)since+时间点时间点Hehasstayedhere since5oclock.2)since+时间段时间段+agoHehasstayedhere since5hoursago.3)since+从句从句ShehastaughtEnglish sincehecamehere.for:(长达）长达）for+时间段时间段Hehaskeptthebookfor2weeks.Practice:1.Imafraidyouarelate.Themeetinghasbeenon-tenminutesalready2.Howlonghaveyoustudiedinthisschool?-fiveyearsagosince,for的用法的用法:Takenotes 第10页/共22页have been have been 与与have gone have gone 的用法比较的用法比较 have been to 意思是意思是“到过，去到过，去过过”，表示，表示曾经到过某处曾经到过某处，但现在人不在那儿。但现在人不在那儿。have gone to 意思是意思是“去了去了”，表示，表示已经去了已经去了某地，现在某地，现在人可能在去的途中或已在那人可能在去的途中或已在那儿了。儿了。have been in 意思是意思是“呆在某呆在某处一段时间了处一段时间了”上一页下一页主菜单第11页/共22页用用用用Have been to,have gone to,Have been to,have gone to,Have been to,have gone to,Have been to,have gone to,have been in have been in have been in have been in 填空填空填空填空1.1.1.1.Mike and his parents _ the north Mike and his parents _ the north Mike and his parents _ the north Mike and his parents _ the north for half a year.for half a year.for half a year.for half a year.2.2.2.2.Mum is not at home now.she _ the Mum is not at home now.she _ the Mum is not at home now.she _ the Mum is not at home now.she _ the shop.shop.shop.shop.3.3.3.3._ you ever _ to kunming?Never._ you ever _ to kunming?Never._ you ever _ to kunming?Never._ you ever _ to kunming?Never.4.4.4.4.Where _ you _ these days?Where _ you _ these days?Where _ you _ these days?Where _ you _ these days?5.5.5.5.Has Jim arrived yet?Has Jim arrived yet?Has Jim arrived yet?Has Jim arrived yet?Yes,he _ here for several days.Yes,he _ here for several days.Yes,he _ here for several days.Yes,he _ here for several days.6.6.6.6.Where is Peter?I donWhere is Peter?I donWhere is Peter?I donWhere is Peter?I don t know where he t know where he t know where he t know where he _._._._.7.7.7.7.Hi Jim!Where _ you _?Li Lei Hi Jim!Where _ you _?Li Lei Hi Jim!Where _ you _?Li Lei Hi Jim!Where _ you _?Li Lei is looking for you.is looking for you.is looking for you.is looking for you.havebeeninhasgonetohavebeenHavebeenhasbeenhasgonehavebeen下一页上一页主菜单第12页/共22页一般过去时与现在完成时的区别一般过去时与现在完成时的区别一般过去时与现在完成时的区别一般过去时与现在完成时的区别n n比较：I have seen the film.我看过这部电影。(我了解这部电影的内容)n n I saw the film last month.n n我上个月看了这部电影。(只说明上星期看了这部电影，不 涉及现在的情况)第13页/共22页 一般过去时只强调过去的动作；现在完成时强调过去的事情对现在的影响。一般过去时通常与表示过去的时间状语连用；现在完成时则不能与表示过去的时间状语连用。一般过去时单纯表示过去的经历；现在完成时表示过去的动作或状态延续到现在并可能持续下去。第14页/共22页 一般过去时的时间状语有：yesterday,last week,ago,in1980,in October,just now 共同的时间状语有：this morning,tonight,this summer,before,already,现在完成时的时间状语有：for,since,ever,never,just,already,yet,in past years 第15页/共22页动动 词词 填填 空：空：1._ you _(clean)the room?1._ you _(clean)the room?Yes,we _(do)that Yes,we _(do)that alreadyalready.When _ you _(do)it?When _ you _(do)it?We _(do)it We _(do)it an hour agoan hour ago.2._ he _(see)this film 2._ he _(see)this film yetyet?Yes.?Yes.When _ he _(see)it?When _ he _(see)it?He _ it He _ it last weeklast week.3.How many times _you_(be)there?3.How many times _you_(be)there?Havecleanedhave donediddodidHasseendidseesawhavebeen下一页上一页主菜单第16页/共22页1.Thehouseisdirty.We_itforweeks.AdidntcleanBhadntcleanedCdontcleanDhaventcleaned2.-_thesportsmeetingmightbeputoff.-Yes,italldependsontheweather.AIvebeentoldBIvetoldCImtoldDItold3.-Imsorrytokeepyouwaiting.-Oh,notatall.I_hereonlyafewminutes.AhavebeenBhadbeenCwasDwillbe4.Youdontneedtodescribeher.I_herseveraltimes.A.hadmetBhavemetCmetDmeet5.-WillyougotoBeijingforvacation?-I_togo,butIdontknowifIcango.AwasplanningBhaveplannedChadbeenplanningDhavebeenplanning第17页/共22页6.-Whenwilltheyleave?-They_verysoon.AdoleaveBareleavingChaveleftDleave7.Theteachertoldthepupilsthattheearth_round.AisBwouldCwasDwere8.I-thisbookfortwoweeks.Ihavetoreturnitnow.AborrowedBhaveborrowedCkeptDhavekept9.We-1,000Englishwordssincewe-tothisschool.Alearn;comeBhavelearning;cameChavebeenlearning;comeDhavelearned;came10.Hehaslivedhere-1990.AforBsincecinDon第18页/共22页4.I _(read)the novel twice.Its interesting.5.She _(go)to Pairs,hasnt she?Yes.How _ she _(go)there?She _(go)there by air.6.So far,many countries _(develop)their software programs.7.Mr Chen _(give)up smoking last year.8.Mr Chen _(give)up smoking since last year.have readhas gonedidgowenthave developedgavehas given下一页上一页主菜单第19页/共22页、翻译下列句子：、翻译下列句子：1.你曾经吃过鱼和薯条吗？你曾经吃过鱼和薯条吗？2.我刚刚丢了我的语文书。我刚刚丢了我的语文书。3.我以前从来没去过那个公园。我以前从来没去过那个公园。4.他已经吃过午饭了。他已经吃过午饭了。5.你已经看过这部电影了吗？你已经看过这部电影了吗？1.Haveyoueattenfishandfrenchfrise?2.IhavelostmyChinesebook.3Ihaveneverbeentothatpark.4.Hehasalreadyhadlunch.5Haveyouseenthismovieyet?第20页/共22页6.我哥哥还没回来。我哥哥还没回来。7.我自从上星期看过这部电影。我自从上星期看过这部电影。8.自从自从1992年他住在这里。年他住在这里。9.这本字典我已买了三年了。这本字典我已买了三年了。10.他离开中国三年了他离开中国三年了6Mybrotherhasnotreturned.7Ihaveseenthismoviesincelastweek.8Hehaslivedheresince1992.9Ihavehadthisdictionaryforthreeyears.10HehasbeenawayChinaforthreeyears.第21页/共22页
