书 山 有 路Aa(an) artabandon vability nable aabnormal aaboard prepabolish vabortion nabout ad & prepabove prep,a & adabroad adabrupt aabsence nabsent aabsolute aabsorb vabstract a & nabsurd aabundant aabuse vacademic a & nacademy naccelerate vaccent naccept vaccess n & vaccessible aaccident naccommodation naccompany vaccomplish vaccount naccountant naccumulate vaccuracy naccurate aaccuse vaccustomed aache v & nachieve vachievement nacid aacknowledge vacquaintance nacquire vacquisition nacre nacross prepact n & vaction nactive aactivity nactor nactress nactual aacute aAD abbrad=advertisement nadapt vadaptation nadd vaddicted aaddition naddress nadequate aadjust vadjustment nadministration nadmirable aadmire vadmission nadmit vadolescence nadolescent a & nadopt vadore vadult nadvance v & nadvantage nadventure nadvertise vadvertisement nadvice nadvise vadvocate vaffair naffect vaffection nafford vafraid aAfrica nAfrican a & nafter ad,prep & conjafternoon nafterward(s) adagain adagainst prepage nagency nagenda nagent naggressive aago adagree vagreement nagricultural aagriculture nahead adaid n & vAIDS naim n & vair naircraft nairline nairmail nairplane nairport nairspace nalarm n & valbum nalcohol nalcoholic a & nalgebra nalike adalive aall ad,a & pronallergic aalley nallocate vallow vallowance nalmost adalone aalong ad & prepalongside adaloud adalphabet nalready adalso adalternative aalthough conjaltitude naltogether adaluminium(Am aluminum) nalways adam v(be)a.m./am,A.M./AM abbramateur aamaze vamazing aambassador nambassadress nambiguous aambition nambulance nAmerica namong prepamount n & vample aamuse vamusement nanalyse vanalysis nancestor nanchor v & nancient aand conjanecdote nanger nangle nangry aanimal nankle nanniversary nannounce vannoy vannual aanother a & pronanswer n & vant nAntarctic aantique nanxiety nanxious aany pron & aanybody pronanyhow adanyone pronanything pronanyway adanywhere adapart ad & aapartment napologize vapology napparent aappeal v & nappear vappearance nappendix nappetite napplaud v & napple napplicant napplication napply vappoint vappointment nappreciate vappreciation napproach n & vappropriate aapproval napprove vapproximately adapron narbitrary aarch narchitect narchitecture nArctic aare v(be)area nargue vargument narise(arose,arisen) varithmetic narm n & varmchair narmy naround ad & preparrange varrangement narrest varrival narrive varrow nart narticle nartificial aartist nas ad,conj & prepash nashamed aAsia nAsian a & naside adask vasleep aaspect nassess vassessment nassist vassistance nassistant nassociate vassociation nassume vassumption nastonish vastronaut nastronomer nastronomy nat prepathlete nathletic aAtlantic aatmosphere natom nattach vattack v & nattain vattempt v & nattend vattention nattitude nattract vattraction nattractive aaudience naunt nauthentic aauthor nauthority nautomatic aautonomous aautumn navailable aavenue naverage a & navoid vawake(awoke,awoken) v & aaward naware aaway adawesome aawful aawkward aBbaby nbachelor nback ad,a & nbackground nbackward(s) adbacon nbacterium(pl bacteria) nbad(worse,worst) abadminton nbag nbaggage nbakery nbalance nbalcony nball nballet nballoon nbamboo nban n & vbanana nband nbandage nbank nbar nbarbecue nbarber nbarbershop nbare abargain n & vbark v & nbarrier nbase nbaseball nbasement nbasic abasin nbasis nbasket nbasketball nbat nbath nbathe vbathroom nbathtub nbattery nbattle nbay nBC abbrbe(am,is,are,was,were,being,been) vbeach nbean nbean curd nbear1 nbear2 vbeard nbeast nbeat(beat,beaten) v & nbeautiful a