Letter to a B student(paragraph7~8)

.,Unit7LettertoaBStudent,Paragraph78,.,Oneinstructorhandledusverywisely,itseemstome.OnSundayeveninginparticular,hewouldmakeapointofstoppinginatalocalbarfrequentedbymanyoftheGI-Billstudent.Therehewouldsitanddrink,joke,andswapstorieswithmeninhisclass,menwhohadbutrecentlyputawaytheiruniformsandidentities:formerplatoonsergeant,bomberpilots,corporals,captains,lieutenants,commanders,majorsevenalieutenantcolonel,asIrecall.Theyenjoyedhiscompanygreatly,ashetheirs.Thenextmorninghewouldwalkintoclassandgivethesesamemenatest.Ahardtest.Atestonwhichheusuallyflunkedabouthalfofthem.Oddlyenough,themenwhomheflunkeddidnotresentit.Nordidtheyresenthimforshiftingsuddenlyfromafriendlygeartoacoerciveone.Rather,theylovedhim,workedharderandharderathiscourseasthesemestermovedalong,andendedupwithagoodgraspofhissubjecteconomics.Thetechniqueisstillratherdifficultformetoexplain;butIbelieveitcanbedescribedasoneinwhichacleardistinctionwasmadebetweenthestudentasclassroomperformerandthestudentashumanbeing.Agooddistinctiontomake.AdistinctionthatshouldputyourBinperspectiveandyourdisappointment.,.,Militaryrank,将军general中将lieutenantgeneral少将majorgeneral准将brigadiergeneral上校colonel中校lieutenantcolonel少校major,上尉captain中尉1stlieutenant少尉2ndlieutenant上士1stsergeant中士sergeant下士corporal列兵private,.,Frequentv.tovisitaparticularplaceoftene.g.:adj.happeningoftene.g.:,Wemetinalocalbarmuchfrequentedbystudents.,Thereisafrequentbusserviceintothecentreoftown.,DerivativeFrequencyn.频率，频繁Frequentlyadv.频繁地，经常,.,Swapv.givesth.tosb.inexchangeforsth.elsee.g.:n.anactofexchangingonethingorpersonforanotherathingorpersonthathasbeenexchangedforanothere.g.:,Ivefinishedthismagazine.CanIswapwithyou?,Letsdoaswap.YouworkFridaynightandIlldoSaturday.,Mostofmyfootballstickersareswaps.,.,Flunkv.judge(sb.inanexaminationortest)nottohavepassede.g.:,Iflunkedmathinsecondgrade.,Shesflunked13ofthe18students.,Phrasalverbflunkout(ofsth.)tohavetoleaveaschooloracollegebecauseyourmarks/gradesarenotgoodenough退学,.,Resentv.tofeelbitterorangryaboutsth.,especiallybecauseyoufeelitisunfaire.g.:,Hebitterlyresentsbeingtreatedlikeachild.,DerivativeResentfuladj.憎恨的，愤慨的Resentmentn.愤恨，怨恨,.,Gearn.themachineryinavehiclethatyouusetogocomfortablyatdifferentspeedse.g.:,Whatgearareyouin?,Idiomget(sth.)intogear（使）开始工作，进入工作状态outofgear失去控制,Phrasalverbgearsth.to/towardsth.使与相适应，使适合于gearup(for/tosth.)为做好准备,.,Coerciveadj.Usingforcetopersuadepeopletodowhattheyareunwillingtodoe.g.:,Theeighteenth-centuryAdmiraltyhadfewcoercivepowersoveritsofficers.,DerivativeCoercev.强迫，迫使Coercionn.强迫，胁迫Coercivelyadv.强制地，压迫地,.,Makeapointofdoingsth.tobeormakesureyoudosth.becauseitisimportantornecessarye.g.:,Imadeapointofclosingallthewindowsbeforeleavingthehouse.,.,Stopintomakeashortvisitsomewhereinordertodosth.e.g.:,Hestopsinatthecleanerstotakehisclothes.,.,Agoodgraspofapersonsunderstandingofasubjectorofdifficultfactse.g.:,HehasagoodgraspofGermangrammar.,Idiombeyondthegraspof不能理解的,.,Theyenjoyedhiscompanygreatly,ashetheirs.,Explanation:Thisisanellipticalsentence.Theoriginalsentenceshouldbe“Theyenjoyedhiscompanygreatly,asheenjoyedtheircompanygreatly”.Inthissentence,“enjoyedtheircompanygreatly”hasbeenomittedas“theirs”.,.,shiftingsuddenlyfromafriendlygeartoacoerciveone.,Explanation:Theword“gear”originallymeansadeviceinavehiclewhichcontrolstherateatwhichtheenergybeingusedisconvertedintomotion.Whiledriving,adriversometimeshiftsorchangesgear.Inthetext,theshiftingofgearreferstothechangeintheinstructorsmannerofdealingwithhisstudents.Whendrinkingwiththestudentsinthebar,hewaseasy-goingandfriendlybutintheclassroom,hebecamesternandsevere.,.,oneinwhichacleardistinctionwasmadebetweenthestudentasclassroomperformerandthestudentashumanbeing.,Explanation:Thedistinctionreferstowhattheinstructormadewithhis