TheexampleisaboutPresidentBushauthorizedtocallupCoastGuardreserviststoprotecttheU.Scoastagainstterroristattacks.It’seasyforthestudentstojudgethatthereadingmaterialisapieceofnews,buthowmuchdotheyknowthestyle.Atthewhile-readingstage,theteachercanexplainthestyleofnews.Newsisastyletoreportthelatestandvaluablefactquicklyandrightly;ithasaspecialstructurethatisaccordingtotheinfluencetoarrangethematerials;therefore,themostimportantandlatestpartisoftenputatthebeginning.Ifthereadersknowthiskindofstructures;theywillunderstandthenewsquickly.Butforthereaderwhodoesn’tformtheschema,heorshewillneedalongtimetoreadthewholenewslikereadinganarration.Withthehelpoftheteacher,thestudentscangraspallkindsofthestylesgraduallyandtheirformalschematawillbemuchricher.
Maybeintheprocessofreading,thestudentsoftenmeetthesituationthattherearen’tanyobstacleoflinguisticandsyntacticconstructioninonearticle,butafterreadingthewholearticle,thestudentshavenoideasaboutit.Theshortageofonecontentschema,theycan’tofferinformationtomatchthereadingmaterials,itcausethereadingdifficult.Facingthesituation,theteacherneedstoenlargethestudents’kenandinputthebackgroundknowledge,soastoenrichthestudents’contentschemata.Themorecontentschematathestudentshave,theeasiercomprehensiontheywilldo.Therefore,inreadingteaching,theteachermustintroducesomerelatedbackgroundknowledgewhichbaseonthetextbooktothestudents.Forexample,whenthestudentshavethelessonLessonsfromJefferson(takenfromCollegeEnglishIntensiveReading,BookIIUnit3),themainroleinthisarticleisthePresidentJefferson.AsweknowtherearemanyfamousPresidentsinthehistoryoftheUSA.Therefore,theteachercanasksomestudentstotellstoriesaboutthesefamousPresidentsthattheyknow.MaybesomestudentsareinterestedinstudyingthehistoryoftheUSAandtheywouldhaverichknowledgeaboutthePresidents,sotheywillliketosharetheknowledgewiththeirclassmates.Thestudentstellthestoriestothestudentsthatwouldmakethestudentsbecomeactive.Aftertheinteractionamongthestudents,theteachercansupplementsomestoriesaboutthePresidents,suchas,Washington,Lincoln.Inthisway,theteacherhelpsthestudentstoenrichtheircontentschemataaboutthePresidentoftheUSAandtheywon’tfeelstrangeanymorewhentheyhavethesimilarreadingmaterialslater.Accumulatingoveralongperiod;thecontentschemawillbemoreandricherinthestudents’mind,whichthestudentscanshifttherelatedcontentschematofinishthereadingsuccessful.