pos = put 放置

pose, position, expose, exposure, compose, composition, propose, proposal, oppose,

opposition, impose, dispose, disposal, preposition

tract = draw 拉，抽，引

tractor, attract, attraction, attractive, distract, subtract, contract, abstract, drag, draw, straight, straighten, stretch

sec, sequ = follow 跟随

second, secondary, sequence, subsequent, consequence, consequently

vid, vis, vey, vy = see 看

visible, vision, visibility, invisible, visual, video, videophone, revise, revision, supervise, supervision, evident, evidence, visit

spect=look 看

spectator, spectacle, spectacular, prospect, inspect, inspection, expect, expectation, respect, respectable, respectful, respective, respected, suspect, suspicion, specific, despite

mob, mov, mot = move动

mobile, mobility, mobilize, automobile, motion, motive, motivate, motivation, motor, move, promote, promotion, emote, remote

ced, ceed, cess , gress = go, walk 行走

precede, proceed, procedure, process, exceed, excess, excessive, succeed, success, successful, succession, successive, successor, access, accessible, progress, congress, regress, aggressive

rupt=break破

bankrupt, interrupt, corrupt, disrupt, erupt

mini, min = small, little 小

miniskirt, minimize, minimum, minus, minute, minority, diminish

scrib, scrip 写，记，抄

describe, description, script, manuscript, prescribe, prescription

dict, dic = say 言，说

diction, dictionary, contradict, dictate, dictation, dictator, predict, prediction, predictable, indicate, verdict

miss, mit = send 投，送，发

mission, missile, dismiss, dismissal, transmit, transmission, emit, emission, promise, compromise, committee, commission

port = carry 拿，带，运

portable, import, export, transport, report, support

leg, legis 法

legal, legalize, illegal, legislate, legislation, legislature

solu, solv 洗，溶解

solution, solve, resolve, resolution, dissolve

press 压

impress, impression, express, suppress, depress

viv, vit=live活：

live, living, lively, survive, livelihood, alive, revive, vivid, vital, vitamin

count=number: 数

account, accountant, discount, number, numeral, numerous, innumerable

ag=act 行动，做：

action, exactly, react, interact, transact, radioactive, agent, agenda, agency,

fac(t)=make做，作，制造：

facility, factory, faculty, affect, defect, infect, perfect, efficient, fiction, artificial, proficiency, feasible

sign=mark记号，信号：

remark, signal, signature, design, designate, significance, resign

du, doub, coup=two 二：

dual, double, doubtful, couple, dubious, duplicate, dual

spher=ball球：

balloon, ballot, hemisphere, atmosphere

popul, publ=people人：

popular, public, publicity, republic, publish, republican, population,

men, min=mind心灵，精神：

mind, remind, mention, mental, comment, memory, memorial, remember, commemorate

struct=build建造：

construct, instruct, obstruct, destruction, destroy

fund, found=base基础：

basement, basis, foundation, profound, fund, refund, fundamental

part=divide分，分开：

dividend, individual, particle, participate, particular, partner, apart, counterpart, depart, impartial, department, party, apartment, compartment

pend,pens-hang悬挂：

dependent, independence, append, appendix, suspend, pension

duc(t)=lead引导：

conduct, deduct, misconduct, educate, induce, introduce, produce, reduce,

oper=work工作：

operate, cooperate, opera

ven,vent=come来：

venture, adventure, avenue, convention, invent, eventually, prevent, intervene

voc,vok=claim呼喊，叫喊，声音：

proclaim, reclaim, exclaim, advocate, provoke, vocal, voice,

sect=cut切，割：

section, segment, intersection, sector

grat, grac, gree=please高兴，感激：

grace, grateful, gratitude, congratulation, agree, agreeable, greet, pleasure, pleasant, disagree

vail, val=worth价值：

worth, worthy, worthwhile, available, prevail, value, valid, validity, valve, evaluate, equivalent

pel, peal, puls=drive驱动：

appeal, compel, compulsion, compulsory, propel, pulse, impulse