八年级英语下册 Unit 6 How long have you been collecting shells Section A 2a2c课件 人教新目标版.ppt

unit6howlonghaveyoubeencollectingshells period1 学习目标 1 掌握本课新单词 2 能使用 have hasbeendoing 现在完成进行时 谈论爱好 3 掌握现在完成进行时和 过去时 的区别 4 掌握since和for的用法 预习检测 收集贝壳溜冰马拉松一双溜冰鞋七年自从我7岁自从九点自从 年前 howlonghavetheybeenwatchingtv theyhavebeenwatchingtvforanhour anhour whataretheydoing theyarewatchingtv whendidyaomingstartplayingbasketball howlonghasyaomingbeenplayingbasketball yaoming ssportslife 成龙 jackiechan 1954 beborn1961 now act hehasbeenactingfor50years howlonghasjackiechanbeenacting hehasbeenactingsincehewas7yearsold hehasbeenactingsince1961 sheisayoungteacher sheisstillteachingenglishnow shestartedteachingenglishin2007 shehasbeenteachingenglish howlonghasshebeenteachingenglish for4years since 2007 4yearsago whendidyoustudyenglish inwhichyear areyoustudyingenglishnow howlonghaveyoubeenstudyingenglish 合作探究 一 shehasbeendancingfornineyears 此句使用了 时态 它的结构是 其中been是 的过去分词 一段时间表示时间的延续 现在完成进行时表示动作从 开始 持续到 可能继续下去 现在完成进行 have hasbeen doing be 过去 现在 groupwork for 如 我弹钢琴已经十年了 ihavebeenplayingthepianofortenyears 1 现在完成进行时表示一个由过去某时起一直持续的动作 这动作可能刚刚停止 也可能还在进行 ihavebeenlearningenglishforthreeyears 我学了三年英语了 2 有时候表示在持续的一段时间中动作的多次重复 动作不一定在持续 shehasbeentypinglettersallday 她打了一天字了 dengyaping1973 beborn1978 1997 playtabletennis howlongdiddengyapingplaytabletennis sheplayedtabletennisfor19years 合作探究 二 对比下面两个句子 shehasbeenskatingforfivehours heskatedforfourhours 两个句子分别用了 时态和 时态 现在完成进行时态表示 有可能持续下去 而一般过去时态表示 即动作已结束 与现在无关 请翻译下面两个句子 注意区别 hehasbeenlivinginchinafortenyears helivedinchinafortenyears groupwork 现在完成进行 一般过去 他已经在中国住了十年了 他曾在中国住了十年 动作现阶段正在进行 过去发生的事情 他仍在中国 他已不在中国 halfanhour howlonghashebeenplayingcomputergames hehasbeen computergames for since playing halfanhour halfanhourago 15minutes howlonghashebeendrawingapicture he apicture 2hours howlonghasshebeenreading shehasbeenreadingfor2hours shehasbeenreadingsince2hoursago howlonghavetheybeenplayingbasketball playbasketballfiveyears theyhavebeenplayingbasketballforfiveyears playsoccertwoyears hehasbeenplayingsoccerfortwoyears howlonghashebeenplayingsoccer anhour howlonghavetheybeenswimming theyhavebeenswimming foranhour sinceanhourago pairwork tom 45minutes lana anhour john threehours sam twohours for since a whatis doingnow b she heis a howlonghasshe hebeen b she hehasbeen pairwork a howlonghasshebeenpalyingfootball b shehasbeenplayingfootballfor30minutes since30minutesago playingfootball30minutes sleeping40minutes playingcomputer4hours watchingtv3hours skating2hours cooking1hour 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 一 用for和since填空 theyhavebeenlearningchinese theycametochina 2 ihaven tseenher alongtime 3 hehasbeenlivinghere 2001 4 shehasbeendoingherhomework twohours 5 it s5years weleftschool 6 howlonghasmarybeenateacher twoyearsago since for since for since since 1 howlong you collect stampssincehalfanhourago 2 howlong he skate sincehe be tenyearsold 3 when he start learningenglish in2002 4 we run ontheplaygroundsince6o clock