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Lesson7Toolate为时太晚Thekeyshavebeenmissingforages.钥匙很久以前就不见了。替换练习：他已经失踪了一个星期了。Hehasbeenmissingforaweek.ListeningExercisesTodaywe'lllistentoastoryaboutthetheftofsomediamonds.Listentothestoryandseeifyoucananswerthisquestion:Didthedetectivessavethediamonds?3steps泛听--每句精听简单讲解--回答问题。No，theydidn't.1detective2airport3expect4valuable5parcel6diamond7steal8main9airfield10guard11precious12stone13sandn.侦探n.机场v.期待，等待a.贵重的n.包裹n.钻石v.偷a.主要的n.飞机起落的场地n.警戒，守卫a.珍贵的n.石子n.沙子Newwordsandexpressions生词和短语1.airportn.机场port港口airport航空港attheairport在机场★airfieldn.飞机起落的场地field田野；airfield停机坪ontheairfield在停机坪上【Keywordsandexpressions】2.expectv.期待,等待①vt.等待，期待，盼望（心理上的等待）waitfor“等待”这个动作本身。•expectsth.expectananswer/ababy•expect+todo.sth.期望做某事Sheexpectstogotherenextweek.•expectsb.todosth.期待某人做某事Iexpectmymothertocomebackearly.3.valuable&precious•valuable有价值的（客观）•precious珍贵的（主观）eg.Thediamondisveryvaluable.eg.TheoldtoybearisprecioustoJohn.4.steal（stole，stolen）v.偷vt.&vi.偷盗，行窃stealsth偷（某物）robsb抢(某人)Mywalletwasstolen.我的钱包被偷了Iwasrobbed.我被抢了5.mainadj.主要的main没有比较级和最高级主要街道mainstreet主要句子mainsentence注意main不能与人连用6.guardn.警戒,守卫keepguard守卫SpecialdifficultiesHetookoffhiscoat.Hetookhiscoatoff.Hetookitoff.Heputoutthefire.Heputthefireout.Heputitout.Sheputonherhat.Sheputherhaton.Sheputiton.1.固定搭配短语，介词位置固定：lookatlookforlookafterwaitforaskfor2.代词要放在中间3.短语动词里的副词或介词可以同他们后面的宾语调换位置。1.Theplanewaslate/anddetectiveswerewaitingattheairport/allmorning.1）注意机场是小地方，所以用at，而不是in。in+大地方at+小地方2）allmorning表示整个早上，也可以说allthemorning。Explainthetext2.Theywereexpectingavaluableparcelofdiamonds/fromSouthAfrica.1）expect期待、期望expectsth.expectsth./sb.todosth.2）valuable表示贵重的3）parcel（小包裹）package（行李包裹，一般较大）。3.Afewhoursearlier,someonehadtoldthepolice/thatthieveswouldtrytostealthediamonds.1）一段时间+earlier，表示多长时间之前。4.Whentheplanearrived,someofthedetectives/werewaitinginsidethemainbuilding/whileotherswerewaitingontheairfield.1）when+一般过去时+过去进行时（如果该动词是瞬间动词，则也用一般过去时）；过去进行时+while+过去进行时（如果动词为瞬间动词，则用一般过去时）。如：Whenhecamein,shewasreadinganovel./Whileshewasreadinganovel,hecamein.2）some...,others...，表示“一些...，另一些...”，如：Somechildrenareplayingontheplayground,whileothersarereadingintheclassroom.5.Twomentooktheparcelofftheplane/andcarrieditintotheCustomsHouse.1）take...off....，表示从某处把某物拿下来。2）theCustomsHouse海关大楼customs海关，custom风俗习惯。6.Whiletwodetectiveswerekeepingguard/atthedoor,twoothersopenedtheparcel.1）while引导的句子前后两句话的动词一般都用进行时，但因为open是瞬间动词，用了一般过去时。2）keepguard，表示守卫、守护。7.Totheirsurprise,theprecisousparcelwasfullofstonesandsand!1）toonessurprise，表示令某人惊讶的是。2）precious，相当于valuable，表示珍贵的。3）befullof，表示充满，相当于befilledwith。Theplanewaslate/anddetectiveswerewaitingattheairport/allmorning.Theywereexpectingavaluableparcelofdiamonds/fromSouthAfrica.Afewhoursearlier,someonehadtoldthepolice/thatthieveswouldtrytostealthediamonds.Whentheplanearrived,someofthedetectives/werewaitinginsidethemainbuilding/whileotherswerewaiting/ontheairfield.Twomentooktheparcelofftheplane/andcarrieditintotheCustomsHouse.Whiletwodetectiveswerekeepingguard/atthedoor,twoothersopenedtheparcel.Totheirsurprise,thepreciousparcelwasfullofstonesandsand!Firstlistenandthenanswerthequestion.Didthedetectivessavethediamonds?Tellthestory1.plane--late--detectives--waiting2.expecting--parcel--SouthAfrica.3.earlier--toldthepolice--thieves4.When--arrived,some--mainbuilding--others--airfield.5.Twomen--parceloff--carrieditintotheCustomsHouse.6.two--guard--door--othersopened7.surprise--parcel--stones--sand跟读模仿SummaryWriting摘要写作Answerthesequestionsinnotmorethan50words.1.Howlongweredetectiveswaitingattheairport?2.WhatweretheyexpectingfromsouthAfrica?3.Wheredidthetwomentaketheparcelafterthearrivaloftheplane?4.Howmanydetectivesopenedit?5.Whatwastheparcelfullof?Detectiveswerewaitingattheairportallmorning.TheywereexpectingavaluableparcelofdiamondfromSouthAfrica.Twomentooktheparcelintothecustomshouseafterthearrivaloftheplane.Twodetectivesopenedit.Theparcelwasfullofstonesandsand.Keystructure过去进行时用法过去某个时间正在发生的事情比较Wearewaitingforthebus.概念理解Wewerewaitingforthebus.现在进行时过去进行时Keystructure过去进行时标志词标志词whilewhenalldayasallnightKeystructure过去进行时标志词例如1.Whilewewerewaitingforthebus,agirlcametous.2.IwascallingafriendwhenBobcamein.3.Jimjumpedonthebusasitwasmovingaway.4.WewerewatchingTVallnight.5.Wewereworkingalldaylastweek.6.AsIwaswalkinginthepark,itbegantorain.7.ShewaseatingwhileIwascooking.Keystructure过去进行时练习1.-What______you______(do)atthattime?-We____________(play)games.2.They_____________(have)ameetingat4yesterdayafternoon.3.She___________(make)herdressalltheafternoon.4.Whenthebellrang,Jenny________(wait)inherseat.5.WhileI_________(sleep),he____________(swim).weredoingwereplayingwerehavingwasmakingwaswaitingwassleepingwasswimmingExercisel.当我父亲正要离开房子的时候，邮递员到了。Asmyfather(leave)thehouse,thepostman(arrive).2.汤姆正在花园里干活，我正在坐着。Tom(work)inthegardenwhileI(sit)inthesun.3.当我正在走的时候，我看见了查理。AsI(walk)downthestreet,I(meet)Charlie.4.他读信的时候，听见了敲门声。Whilehe(read)theletter,he(hear)aknockatthedoor.5.当我的妈妈正在准配午饭，Janet正在放桌子。Whilemother(prepare)lunch,Janet(set)thetable.l.当我父亲正要离开房子的时候，邮递员到了。Asmyfatherwasleaving(leave)thehouse,th