Unit10Whenwasitinvented?Selfcheck及教学资源教案SELFCHECK1FillingblanksOnpage73isaboxwith4sentences.Readthesentencesandfillintheblankwithacorrectword.crispysweetsaltysour1.Idon’tlikeeatingchocolate.Thetasteistoosweet.2.Momaddedsaltbutitstillwasn’tsaltyenough.3.Ipreferlemonstooranges.Ilikethesourtaste.4.Shelikescrispycookies.Theyarehard,dryandeasilybroken.Nowyouareaskedtomakeyourownsentenceswitheachofthefourwords.1.Thesnowiscrispy.Thecrackersaren’tcrispy.Theymusthavegotwet.2.Mycoffeeistoosweet—Iputtwospoonfulsofsugarinit.Doyoulikesweetdrinks?3.Seawaterisverysalty.Thissoupisverysalty.Ithinkyouhaveputtoomuchsaltinit.4.Theseorangesareassouraslemons.2Writingaboutinventionsonpage733000BC-Theabacus,builtoutofwoodandbeads,usedtheconceptsofonesetofobjectsstandinginforobjectsinanotherset,butalsotheconceptofasingleobjectstandingforacollectionofobjects—positionalnotation.-Earlytables,namedabaci,formalizedcountingandintroducedtheconceptofpositionalnotation.-Earlymancountedbymeansofmatchingonesetofobjectswithanotherset(stonesandsheep).invention,history,inventorof,historyof,whoinvented,inventionof,fascinatingfacts.Thebasicumbrellawasinventedoverfourthousandyearsago.WehaveseenevidenceofumbrellasintheancientartandartifactsofEgypt,Assyria,Greece,andChina.Theseancientumbrellasorparasols,werefirstdesignedtoprovideshadefromthesun.TheChinesewerethefirsttowaterprooftheirumbrellasforuseasrainprotection.Soonaftertelescopeswereinvented,peoplestartedtofastentwoofthelongtubestogethertomakebinoculars(fromtheLatin"twoeyes").Around1900,aGermanphysicistnamedErnstAbbemadeapairofbinocularsusingprisms.Thetriangularprismseachreflectedtheincominglighttwice.Thismeantitwaspossibletomakeashorterinstrument.Thetwoprismsalsoflippedtheimageupright.CameraThehistoryofthecamera-CameraObscura,photography,thesignificantprocessesofphotography,andwhoinventedthepolaroidandphotographicfilm.In1818,BaronvonDraisintroducedamachinetothepublicinParis.Ithadtwoin-linewheelsconnectedbyawoodenframe.Theridersatastrideandpusheditalongwithhisfeet,whilesteeringthefrontwheel.Justforfun!Lookatthepicturesbelowandtellaboutwhatyousee.Useasmanyexamplesofpassivevoice(questionsandstatements)aspossible.Reading:Doyouknowwhenbasketballwasinvented?Beforeyouread,listenandreadaloudtotherecordingofpassage.Makeyourreadingasclosetotherecordingaspossible.Whileyouread,divide(/)thesentencesintogroupsofthought,circlethepredicatesinpassivevoiceandunderlinealltheusefulexpressions.Doyouknowwhenbasketballwasinvented?IfyoutravelaroundChina/youwillnoticeaverypopularactivity/everywhereyougo—basketball.Thismuch-lovedandactivesportisenjoyed/byall,forfunandexercise.Thesportofbasketballisalittlemorethanahundredyearsold.Itisplayed/bymorethan100millionpeople/inover200countries/includingChina,wherebasketballhasbeenplayed/inparks,schools,andeveninfactories.Basketballwasinvented/byaCanadiandoctor/namedJamesNaismith,whowasborn/in1861.Whenhewasatcollege,hisclasswasonceasked/toinventanewgame/thatcouldbeplayed/indoors/duringthelongwinters.DrNaismithcreatedagame/tobeplayed/onahardwoodenfloor,so/thesafetyoftheplayers/wasimportant.Knockingintoplayers/andfallingdownwouldbedangerous.DrNaismithdividedthemen/inhisclass/intotwoteams,andtaughtthem/howtoplayhisnewgame.Theaimofbasketballisforplayers/totrytogetaball/intothe“basket”:anet/hangingfromametalhoop.Playersshoot/frombelo...
