SectionDWhatmethoddidyouusetofindyourlostcellphone?•GPSislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Theearlyexplorersusedthestarsaslandmarkstoknowwheretheywereandinwhichdirectiontheyweregoing.Thismethodworkedwellatnightaslongastheweatherwasgood.Butitdidn’tworksowellduringtherestofthetime.Let’susetheGPS.n.探险者，勘探者Teachingaims.1.Grammar：TheradiowasinventedbyGuglielmoMarconiin1895.Whenwasthedigitalcameradeveloped?Itwasdevelopedinthe1970s.Wherewasitdeveloped?ItwasdevelopedinJapan.Whatisarocketusedfor?It’susedforsendingsatellitesorspaceshipsintospace.2.Functions：IwishIcouldgointospacesomeday.Ihopeyoudreamwillcometrue.It’ssaidthatheinventedmorethantwothousandthingsduringhislife.Inventingisinterestingandexcitingandeveryonecanbeaninventor.3.Newwords：explorer,mark,system,man-made.一.读p87短文，在文中划出下面的短语并朗读。1.探索我们的世界_____2.在哪个方向______3.只要________4.在其余时间里______5.好的地标_____6.全球定位系统_____7.地球的形状_____8.在任何时候_________9.帮我们探索星球_____预习导纲二.读下列句子，翻译并探究。1.Thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbeseen.译：____探究：workwell意为___.well是___词。同类用法还有：（物品）+sellwell.意为___/（衣物）+washwell意为____（车）+ridewell意为_____做一做：Thismethodsounds____,andworks____inourstudies.A.well,wellB.good,goodC.good,wellD.well,good2.TheGPSisagreatinventionthathelpsusexploreourplanetanddiscoverwhereweare.译_探究：此句中that是___代词，引导___从句。where是___副词，引导__从句。做一做：a).Tony,tellmetheresultofthediscussion___youhadwithyourdadyesterday.A.whatB.thatC.whenD.whob).—Doesanybodyknow____?—It’sUncleLee’s.A.whereisthebikeB.whothebikeisC.whosebikeitmaybeD.whosebikeitis当堂训练1.Withthemoney____hesavedwhenhewasyoung,hecouldgoonwithhiseducation.A.whatB.whoC.thisD.that2.—Wouldyoupleasedrive___?Mytrainisleaving.—I’dliketo,butsafetycomesfirst.A.betterB.morecarefullyC.moreslowlyD.faster3.—Sorryforbeinglateagain.—___hereontimenexttime,oryou’llbepunished.A.BeB.BeingC.TobeD.Been4.AlthoughflightMH370hasbeenmissingformonths,Idobelieveit___somedayinthefuture.A.willfindB.won’tfindC.willbefoundD.won’tbefound5.Sheaskedme___.A.thatIcouldhelpherwithherEnglishB.ifIcouldpickherupafterschoolC.whereIbuythebookD.whenwouldIleave•1.Howdidtheearlyexplorersknowwheretheywere?•Theyfoundoutwheretheywerebyusingstars.•2.What’sthedisadvantageofusingthestarsasguidingmarks?•Itsdisadvantageisthatitdidn’tworkwellwhentheweatherwasbadandthestarscouldnotbeseen.•3.WhatisaGPS?Isitusefultouse?•Itislikeaman-madestar.Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.Itisveryuseful.•4.WhatdoyouthinktheGPSwillbeusedforinthefuture?•…ReadthepassageanddiscussthequestionsonPage88.Listentothepassageandnumberthefollowingsentences.()Itcanalsobeusedtostudytheshapeoftheearth.()Theearlyexplorersfoundthatthestarsintheskyweregoodguidingmarks.()Thismethodworkedwellatnightaslongastheweatherwasgoodandthestarscouldbeseen.()Wecanuseitatanytime,inanyplaceandinanyweathertofindoutourposition.①②③④根据首字母提示，完成短文。ThankstoGPS,wecanexactlyknoww_____wearenow.GPSislikeaman-made“star”.Itcanbeu____inanyplaceandanyweatherconditiontofindoutourp________.Inthepast,theearlyexplorershadtousestarsinthes____totellthemwheretheywere,however,thismethoddidn’twork...
