1) aer, ar, 含义是“空气，大气” aeroplane, aerial,

　　2) ag, act, ig, 含义是“做，动作” active, agent, reaction,

　　3) alt, 含义是“高”， altitude,

　　4) alter, altern, altr, 含义是“其它，变更” alternate,

　　5) bio, bi, bion, 含义是“生物，生命” biology, bionics(仿生学)

　　6) brev, bri, brief, 含义是“短” brief, abbreviation, abridge(节略)

　　7) cap, capt, cept, cip, 含义是“取，获” capture, except, concept, capacity

　　8) ced, ceed, cess, 含义是“行，让步” proceed, succeed, excess(过度)

　　9) centr, centr, 含义是“中心” concentrate, eccentric(偏心的)

　　10) clain, clam, 含义是“呼喊” claim, proclaim, exclaim

　　11) clos, clud, 含义是“闭合” conclude, enclose, include

　　12) col, cult, 含义是“耕耘” colony, cultivate, agriculture

　　13) cor, cord, 含义是“心” cordial, record, accord

　　14) curr, cur, cour, 含义是“跑，动作” current, occur, concurrence(同时发生)

　　15) dic, dict, 含义是“说，示” dictate, edit, indicate, predict

　　16) doc, doct, 含义是“教” doctor, document.nbsp

　　17) duc, duct含义是“引导，传导” introduce, produce, conduct, deduct( 推论)

　　18) fact, fac, fect, dic, dit, 含义是“做，创造” factory, effect, profit, faculty, perfect

　　19) fend, fens, 含义是“打，击” defence, offence

　　20) fer, 含义是“搬运，移转” ferry, transfer, defer(迟延)

　　21) fin, finit, 含义是“终，极” final, finish, confine

　　22) firm, 含义是“坚固” firm, confirm, affirm(断定)

　　23) fix, 含义是“固定” prefix, affix(附加)