青海省师大二附中八年级英语 Unit 6《How long have you been collecting shells》课件.ppt

unit6howlonghaveyoubeencollectingshells?,doyouknowyijianlianssportslife?howlonghasyijianlianbeenplayingbasketball?,yijianlianssportslife,hehasbeenplayingbasketballfor13years.hehasbeenplayingbasketballsince1999.hehasbeenplayingbasketballsincehewas12yearsold.,1.现在完成进行时的定义:表示从过去开始一直持续到现在的动作,这个动作可能刚结束,也可能还要继续下去,常与fortwohours,since1998,allthismorning,thesefewdays等表示一段时间的状语连用。,现在完成进行时,grammar,1)ivebeenstudyingenglishsinceiwas4yearsold.自从4岁起我就一直学英语。2)hehasbeenlivingatthestreetforabout20years.他一直在这条街住了近20年了。3)shehasbeenlisteningtomusicforthreehourstoday.她今天听了三个小时的音乐了。,【经典例句】,4)haveyoubeentalkingwithhimonthephonesince6:00pm?你六点起就一直在给他打电话？5)howlonghasitbeenraining?雨下多久了？6)whatbookhaveyoubeenreadingrecently?最近你在看什么书？,2.由上我们可以总结出现在完成进行时的构成:肯定形式:have/hasbeen(现在分词)doing否定形式为:have/hasnotbeendoing一般疑问句形式:have/hassb.beendoingsth.?特殊疑问句形式(询问持续时间长短):howlonghave/hassb.beendoingsth.?,3.注意:for表示时间的持续,后跟时间段。表示一段时间,多与带数词的名词连用,谓语需用延续性动词。since表示“自从过去某一时间点以来”,后面接时间点,强调动作或状态一直延续到现在,since后可接表时间的名词或名词短语,也可接一个时间状语从句。,4.一般过去时、现在完成进行时和现在完成时的区别：howlongdidyouskate?(一般过去时)howlonghaveyoubeenskating?(现在完成进行时)howlonghaveyoubeenhere?(现在完成时),注意:1)一般过去时表示在过去某个时间发生的动作或存在的状态,该动作已结束,不强调同现在的关系。2)而现在完成进行时表示动作从过去开始发生一直持续进行(到现在),可能仍在进行,也可能停止了一会儿。,3)现在完成时强调的是:表示过去发生或已经完成的动作对现在造成的影响或结果。过去某一时间开始并一直持续到现在(包括“现在”在内)的动作或状态,可以和表示延续的时间状语连用。注意这三个时态语意上的差异。,clicktoit.,1b,listen.areporteristalkingtotheparticipantsinaskatingmarathon.fillinthechartbelow.(1b),ivebeenskatingforfivehours.,iskatedforfourhours.,ivebeenskatingforfivehours.,iskatedfortwohours.,_havetheybeenskating?alison_forfivehours.sam_atnineoclockinthemorningand_atoneoclockintheafternoon.sam_forfourhours.hewasverytired!victorstarted_atnineoclock.hesbeenskating_fivehours.celiaskated_twohours.,howlong,hasbeenskating,started,stopped,skated,fillintheblanks.,skating,for,for,clicktoit.,2a,1.howlongdidyouskatetoday?2.howlonghaveyoubeenskatingtoday?3.wasthisyourfirstskatingmarathon?4.doyouskateeveryday?5.whendidyougetyourfirstpairofskates?6.howlonghaveyoubeenskating?,listentotheinterviewwiththeskatingmarathonwinnerandcheckthequestionsyouhear.(2a),questions1.howlongdidyouskatetoday?3.wasthisyourfirstskatingmarathon?4.doyouskateeveryday?6.howlonghaveyoubeenskating?,answersa.no,iskatedinamarathonlastyear.b.yes,ido.c.forsixhours.d.sinceiwassevenyearsold.,listenagain.drawlinestomatchthequestionswithanswers.(2b),alison:iskated_sixhourstoday!i_inamarathonlastyear.i_iwassevenyearsold.igotmyfirstpairofskatesonmybirthdayfrommygrandmother.,fillintheblanks.,for,skated,vebeenskating,since,languagepoints,ivebeenskatingsinceiwassevenyearsold.【同步造句】从六岁开始，她就一直在弹钢琴。_【用法透析】since和for都可用于含有现在完成时或现在完成进行时的句子。since可作介词，后接时间点，也可作连词，后面接从句。而for为介词，后面接时间段。如：,shesbeenplayingthepianosinceshewassixyearsold.,mrsmithhasbeenlivinginbeijingforfiveyears.【拓展链接】对“since+时间点”、“since+从句”或“for+时间段”进行提问时，用howlong，句中的谓语动词用延续性动词。如：howlonghaveyoubeencollectingshells?fortenyears./sincetenyearsago./sinceiwassixyearsold.,-howlonghaveyoubeenskating?-ivebeenskatingsincenineoclock.ivebeenskatingforfivehours.-howlongdidyouskate?-iskatedfortwohours.,课时重点回顾,review,根据句意及汉语提示填写单词。1.iwanttobuyanew_(一双)ofskates.2.henryhasbeenwriting_(自从)nineoclock.3.ilike_(收集)shells.ithinkitsfun.,pair,since,collecting,选择括号内适当的词语填空。1._(howlong/howfar)hasyourbrotherbeenplayingtennis?2.wenliistooshytospeakinfrontofthe_(all/whole)class.3.lizhasbeenstudyingmedicine_(since/for)threeyears.4._(each/every)ofthestudentshasanenglish-chinesedictionary.5.shenxueandzhaohongdaoaregood_(skates/skaters).,translateandwritethemdown.,1.-他踢足球踢了多长时间了？-他踢了五个小时了。2.你滑冰有多久了？-我从七岁就开始滑冰了。,howlonghashebeenplayingfootball?hesbeenplayingforfivehours.,howlonghaveyoubeenskating?ivebeenskatingsinceiwassevenyearsold.,3.中国是一个有悠久历史的国家。chinaisacountry_.4.昨天，我买了我第一双溜冰鞋。iboughtmy_yesterday.5.那些人没有房子住了，我们应该尽力帮助他们。thosepeoplehavenohouses_.weshouldtryourbesttohelpthem.,tolivein,withalong,firstpairofskates,history,1.mrgreen_inchinasincefiveyearsago.a.livedb.haslivedc.livesd.isgoingtolive2.-isthemeetinggoingtolast?-abouttwentyminutes.a.howfarb.howsoonc.howlongd.howoften3.hesbeencollectingshells_hewastenyearsold.a.whenb.whilec.andd.since,choosethebestanswer.,4.ihavebeenskating_twohours.a.inb.atc.ford.since5.ifi_enoughmoney,i_ahospitalforsarspatients.a.willhave,buildb.willhave,willbuildc.have,willbuildd.have,build,translateandwritethemdown.,1.为了给慈善事业筹款，学生们正在溜冰。2.艾利森是第一个开始滑的，并且已滑了足足五个小时。,studentsareskatingtoraisemoneyforcharity.,alisonwasthefirstonetostartandhasbeenskatingforthewholefivehours.,根据例句及所给提示词语造句。example1:i,run,inthepark,halfanhourihavebeenrunningintheparkforhalfanhour.he,learn,english,twoyears2.they,feel,sick,tuesday,hehasbeenlearningenglishfortwoyears.,theyhavebeenfeelingsicksincetuesday.,example2:i,study,veryhard,recentlyihaventbeenstudyingveryhardrecently.3.