八年级英语 第3单元2课时课件 人教新目标版.ppt

unit3 whatwereyoudoingwhentheufoarrived sectiona2a 2c whatwasshedoingwhentheufoarrived shewassleeping inthebedroom shewassleepinginthebedroomwhentheufoarrived wherewasshewhentheufoarrived shewasinthebedroom hewascooking inthekitchen hewascookinginthekitchenwhentheufoarrived whatwashedoingwhentheufoarrived hewasinthekitchen wherewashewhentheufoarrived whatweretheydoingwhentheufoarrived theywerehavingahaircut inthebarbershop abarber theywerehavingahaircutinthebarbershopwhentheufoarrived whereweretheywhentheufoarrived theywereinthebarbershop pairwork a whatwashe shedoingwhentheufoarrived b he shewas whenitarrived a whatwereyoudoingwhentheufoarrived b iwas gettingoutoftheshower 2alistenandorderthesestatements 1 5 thealienvisitedthemuseumofflight thealienboughtasouvenir aufolandedoncenterstreet thealienwentintoastore analiengotoutoftheufo alien外星人 buy bought land着陆 get got 1 2 3 4 5 theboywaswalkingdownthestreet aufolanded thegirlwasshopping shesawthealiengotout thealienwasbuyingasouvenir thegirlcalledthepolice thealienwasvisitingthemuseum theboycalledthetvstation when when while while listenandcompletewith when and while thinkandcompare theboywaswalkingdownthestreetwhenaufolanded whiletheboywaswalkingdownthestreet theufolanded whilethegirlwasshopping thealiengotout thegirlwasshoppingwhenthealiengotout iknow 比较 when and while 2 whentheufolanded theboywaswalkingdownthestreet whiletheboywaswalkingdownthestreet theufolanded 1 whenthealiengotout thegirlwasshopping whilethegirlwasshopping thealiengotout targetlanguage thinkandcompare whenandwhile bothofthemmean 当 的时候 aretheythesame no 比较 when and while when 当 时候 后面跟的动作不延续 常跟一般过去时whentheufotookoff theboywastakingphotos 2 while 当 时候 后面跟的动作延续 常跟过去进行时whiletheboywastakingphotos theufotookoff when和while的用法与区别 1 延续性动词和非延续性动词延续性动词指动作可以延续一段时间 而不是瞬间结束 如 work study drink eat等 非延续性动词指动作极为短暂 瞬间结束 如 gocomeleavebuylendborrowjoinfinishstart begin hit jump knock等 summary 1 when可指时间点 又可指时间段 从句中可用延续性动词 也可用非延续性动词 2 while总是指一个时间段 从句中必须用延续性动词 3 统一时态 主句过去式 从句也是过去式 1 while当 时候 后面跟的动作延续 多用进行时态 2 when当 时候 后面跟的动作不延续 多用过去时态 用when while填空 whatwereyourclassmatesdoing youcameintotheclassroom iwaswalkingtoschoolyesterday imetmyoldfriendjenny wewereplayinggames someoneknockedatthedoor myfatherwasreadingthenewspaper mymotherwaswatchingtvlastnight 答案 when while while while iwaswalkingdowncentrestreetwhenaufolanded walkdown along沿着 走land 着陆 下降 动词 takeoff 起飞 e g theplanelandedsafely makesentenceswithwhenorwhile i hewas when whiletheteachercameintotheclassroom when whilei hewas thetelephonerang whateachpersonwasdoingwhentheufolanded makesentencewith when and while thenimaginewhatyouweredoing a whatwasthegirldoingwhentheufotookoff b whilethegirlwas c whentheufotookoffthemanwas reporter talkwithapoliceman rideabike eatanice cream takephotos task2use whentheufotookoff he shewas whilehe shewas theufotookoff 他昨天抵达北京 he inbeijingyesterday he tobeijingyesterday he beijingyesterday 答案 arrived got reached 飞机将在一个小时后起飞 theplanewill inanhour 睡觉前你得脱掉鞋子 youneedto yourshoesbeforegoingtobed 你必须照顾好你自己 youmust good yourself 答案 takeoff takeoff take careof exercises choose when or while tofillintheblanks 1 iwaswalkinginthestreet theaccidenthappened 2 iwasdoingmyhomework thetelephonerang 3 itwasraining theplanetookoff 4 theteacherwasspeakingtoclass nickstoodupsuddenly when while while while 二 translatethesesentencesintoenglish 上课铃响时 你在干什么 what you whentheclassbellrang 当我妈妈进来时我正在看书 i whenmymothercamein 昨天晚上十点钟她正在做饭 she atteno clock were doing wasreading wascooking lastnight yesterdayevening fillwith while or when 1 maywastalkingonthephone hersisterwalkedin 2 ritaboughthernewdog itwaswearingalittlecoat 3 isawcarlos hewaswearingagreenshirt 4 iwasdancing hewassingingloudly 5 lindafinallysawdavy hewasjumpingwithadog 6 iwascleaningmyroom thefirebrokeout when while while when when when 7 weweretalking theteachercameintotheclassroom 8 iwassinging hewasdancing 9 iwascuttinghair theufolanded 10 theboyswereplayingbytheriver tomfellintotheriver 11 mymotherwaswashing myfatherwascooking 12 whatwereyoudoing theufoarrived when when when while while while 1 theyweretalking thebellrang 正在他们谈话的时候 上课铃响了 2 iwasdoingmyhomework mymothercamebackhomeyesterdayevening 昨天晚上妈妈回家的时候 我正在做家庭作业 while when fillinthebl