八年级英语下册 Unit6How long have you been collecting shellssectionA精品课件 人教新目标.ppt

unit6 howlonghaveyoubeencollectingshells sectiona howlonghaveyoubeendoing i vebeendoing for 时间段 since 时间点 languagegoal talkabout 单词和词组collect skate since raise several stamp kite anyone store coin capital european russian australian thousand foreigner quite certain miss runoutof bytheway beinterestedin morethan theolympicgames faraway 动画词汇 单元重点 句子howlonghaveyoubeen i vebeen since whendidyoustart istarted 语法现在完成进行时的用法 交流用法 whendidyoustartskating istartedskatingat9o clock sohowlonghaveyoubeenskating i vebeenskatingforfourhours iamayoungteacher iamstillteachingenglishnow istartedteachingenglishin2004 ihavebeenteachingenglish howlonghaveyoubeenteachingenglish for2years since 2004 2yearsago 自从 自 以来 introduce hestartedteachingmathwhenhewas20yearsold heis50yearsoldnowandheisstillteachingmath howlonghashebeenteachingmath hehasbeenteachingmath for30years since 30yearsago hewas20yearsold whendidyoustudyenglish inwhichyear areyoustudyingenglishnow howlonghaveyoubeenstudyingenglish istartedcollectingshellsin2000 howlonghaveyoubeencollectingshells ihavebeencollectingshellsfor6years ihavebeencollectingshellssince2000 ihavebeencollectingshellssince6yearsago halfanhour howlonghashebeenplayingcomputergames hehasbeen computergames for since playing halfanhour halfanhourago whatishedoingnow 1hour howlonghashebeendoingchinesekongfu hehasbeendoingchinesekongfufor1hour hehasbeendoingchinesekongfusince1hourago theyhave 滑冰 for since 两个小时 skate theyareskatingnow howlonghavetheyskating skatingmarathon 1blistenandfinishtheform howlong alison sam victor celia i vebeenskatingforfivehours iskatedforfourhours i vebeenskatingforfivehours iskatedfortwohours whoisskatingnow woman alison howlonghaveyoubeenskating alison i vebeenskatingforfivehours woman wow sam howlongdidyouskate tapescript sam iskatedforfourhours istartedatnineo clockinthemorningandstoppedatoneo clockintheafternoon i mverytired woman whendidyoustartskating victor victor atnineo clock woman soyou vebeenskatingfor victor i vebeenskatingforfivehours woman howlongdidyouskate celia celia umm let ssee iskatedfortwohours howoften howsoon howlong explanation howoften表示 每隔多久一次 询问频率 可用于一般现在时 一般过去时和现在完成时的句子中 可用于对often always usually sometimes never hardly onceaweek等频率副词提问 如 howoftendoyougotothecinema 你每隔多久去一次电影院 twiceamonth 一个月两次 howsoon表示 多久以后 一般用在将来时态或表示将来的句子中 如 howsoonwilltheycomeback 他们多久以后回来 intwodays 两天以后 howlong表示 多长时间 常用于一般过去时 现在完成时 将来时和过去完成时的句子中 谓语动词须是延续性动词 常与for或since引导的一段时间连用 如 howlongdidyoustayinsydneylastyear 去年你在悉尼呆了多久 istayedtherefortwomonths 我在那儿呆了两个月 1cpairwork askandanswerquestionsaboutthepeopleinthepicture a howlonghasalisonbeenskating b she sbeenskatingforfivehours a howlongdidsamskate b heskatedforfourhours 1 howlongdidyouskatetoday 2 howlonghaveyoubeenskatingtoday 3 wasthisyourfirstskatingmarathon 4 doyouskateeveryday 5 whendidyougetyourfirstpairofskates 6 howlonghaveyoubeenskating 2alistenandcheck thequestionsyouhear reporter alison congratulationsonwinningtheskatingmarathon alison thankyou reporter so howlongdidyouskatetoday alison forsixhours tapescript reporter wasthisyourfirstskatingmarathon alison no iskatedinamarathonlastyear reporter you reanexcellentskater alison doyouskateeveryday alison yes ido reporter howlonghaveyoubeenskating alison sinceiwassevenyearsold igotmyfirstpairofskatesonmybirthdayfrommygrandmother whendidyougetyourfirstpairofskates 你什么时候拥有你的第一双溜冰鞋 pair意为 一对 一双 一副 其中的两个个体不能分离 使用pair一词时应注意以下几点 pair和many few several等表示不定量的词连用时 谓语动词用复数形式 如 thereareseveralpairsofglovesonthedesk 桌子上有几副手套 2 pair和this that each every another first等连用或apairof作主语时 谓语动词用单数形式 如 thatpairofglassesismine 那副眼镜是我的 apairoftrouserswaslyingonthechairandtwopairsofshoeswereunderthebed 一条裤子搭在椅子上 两双鞋摆在床下 alisonwasthefirstonetostartandhasbeenskatingforthewholefivehours 艾利森第一个出发并一直滑了整整五个小时 句中的动词不定式tostart作后置定语修饰thefirstone 被修饰的名词或代词 有时可省略 和动词不定式之间是逻辑上的主谓关系 如 inmyfamilymotherisalwaysthefirstonetogetup 在我家妈妈总是第一个起床的人 2blistenagain drawlinestomatchthequestionswithanswersinactivity2a questions1 howlongdidyouskatetoday 3 wasthisyourfirstskatingmarathon 4 doyouskateeveryday 6 howlonghaveyoubeenskating grammarfocus howlonghaveyoubeenskating 现在完成进行时既有现在完成时态的结构特征 又有现在进行时态的外在形式 构成 主语 have hasbeen 动词的现在分词 其他 时间状语 常与表示一段时间的状语连用 如 for 时间段 since 时间点或句子 等 用法 表示一个动作从过去某个时间开始 一直持续到说话时还在进行 如 hehasbeenplayingthecomputergamessincefouro clockintheafternoon 从下午四点到现在 他一直在玩电脑游戏 2 表示一个动作从过去某个时间开始 一直持续到说话时结束 如 wherehaveyoubeenjustnow yourparentshavebeenlookingforyoueverywhere 你刚才在哪儿 你父母一直在到处找你 3 表示在一段时间内反复发生的动作 如 ithasbeenrainingeverydaythisweek 这周天天下雨 4 表达较重的感情色彩 如 关切 惊异 愤怒 等 如 whathaveyoubeendoingtomynewclothes 你把我的新衣服弄成什么样子了 现在完成进行时和现在完成时的区别 表示 某动作从过去开始一直持续到现在 这一概念时 两者可以互换使用 但前者多用于口语 含义上着重表示动作的结果时 多用现在完成时 着重表示动作一直在进行 即动作的持续性时 则多用现在完成进行时 如 theyhavebuiltaship 他们制造了一艘船 造船的动作已经完成 theyhavebeenbuildingtheshipforthreeyears 他们制造这艘船已有三年了 造船的动作仍在进行 2cpairwork studentaisthereporter studentbisalison roleplaytheinterview youcanusethewords since for andthesentences howlong i vebeen 3a readthepassageandthencompletethetable 5hours sam 4hours 4hours luning lichen 1hour 9am 2pm 5hours alison 3b it s2pmnow writethestudents namesfromabovetableonthetimeline alison sam luning lichen readandanswer sectiona3a 1 whyarestudentsskating 2 howmuchdoeseachstudentraiseforeveryhourtheyskate 3 howlonghastheskatingmarathonbeengoing 4 whowasthefirsttostart 5 whowasthelastone toraisemoneyforcharity tenyuan forfivehours alisonwasthefirsttostart lichenwasthelastone 用for和since填空 theyhavebeenlear