八年级英语下册 unit6 sectionA课件人教版新目标.ppt

howlonghaveyoubeencollectingshells unit6 1 howlongdidyousleeplastnight foreighthours 2 whendidyoustartclasstoday atsevenforty five 3 howlonghaveyoubeeninclasstoday ihavebeeninclassforonehour whatareyoudoing iamskating howlonghaveyoubeenskating i vebeenskatingsincenineo clock i vebeenskatingforfivehours howlongdidyouskate iskatedfortwohours collectstamps swimming study playthepiano pairwork 1blistening i vebeenskatingforfivehours iskatedforfourhours i vebeenskatingforfivehours iskatedfortwohours 1cpairworkaskandanswerquestionsaboutthepeopleinthepicture a howlonghasalisonbeenskating b she sbeenskatingforfivehours a howlongdidsamskate b heskatedforfourhours 2alistening 1 howlongdidyouskatetoday 2 howlonghaveyoubeenskatingtoday 3 wasthisyourfirstskatingmarathon 4 doyouskateeveryday 5 whendidyougetyourfirstpairofskates 6 howlonghaveyoubeenskating questions1 howlongdidyouskatetoday 2 howlonghaveyoubeenskatingtoday 3 wasthisyourfirstskatingmarathon 4 doyouskateeveryday 5 whendidyougetyourfirstpairofskates 6 howlonghaveyoubeenskating 2blistening answersa no iskatedinamarathonlastyear b yes ido c forsixhours d sinceiwassevenyearsold 1 现在完成进行时 表示从过去开始一直持续到现在的工作 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 explanation 现在完成进行时的构成 have hasbeen 现在分词 doing 否定形式为 have hasnotbeendoing 一般疑问句构成 have hassb beendoingsth 特殊疑问句形式 询问持续时间长短 howlonghave hassb beendoingsth 例 1 ihavebeencleaningtheroomallthismorning 我今天一上午都在打扫房间 2 i vebeenstudyingenglishsinceiwas4yearsold 自从4岁起我就一直学英语 3 hehasbeenlivinginthestreetforabout20years 他一直在这条街住了近20年了 常和表示一段时间的状语连用 theyhavebeenworkingfortwohours 他们已工作两小时了 for和表示一段时间的词组连用 theyhavebeenrunningsincesixo clock 从6点起他们一直在跑 since和表示过去某一时刻的词或词组连用ihavebeenwaitingforyousinceicamehere 自到这儿以来我一直在等你 since后可跟句子 句子时态多用一般过去时 whendidyaomingstartplayingbasketball howlonghasyaomingbeenplayingbasketball yaoming ssportslife hestartedplayingbasketballin1989 hehasbeenplayingbasketballsince1989 hehasbeenplayingbasketballfor16years david1970 bornintheu s a1999 now teachenglish howlonghasdavidbeenteachingenglish hehasbeenteachingenglishsince1999 hehasbeenteachingenglishfor10years howlonghasdavidbeenteachingenglish hehasbeenteachingenglishsince10yearsago hehasbeenteachingenglishsincehewas29 1 mrgreen inchinasincefiveyearsago a livedb haslivedc livesd isgoingtolive 2 isthemeetinggoingtolast abouttwentyminutes a howfarb howsoonc howlongd howoften 3 ihavebeenskating twohours a inb atc ford since 4 ifi enoughmoney i ahospitalforpatients a willhave buildb willhave willbuildc have willbuildd have build5 he sbeencollectingshells hewas