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1.常用前缀  aero:concerning the air or aircraft 
  plane(飞机)—aeroplane(飞机) 
  space(空间,间隔)—aerospace(航空宇宙) 
  anti: against;opposite of 
  nuclear([核]核子的)—antinuclear(反对使用核武器的) 
  matter(物质)—antimatter(反物质) 
  war(战争、作战、打仗)—antiwar(反战的,反对战争的) 
  auto: of or by oneself 
  biography(传记)—autobiography(自传) 
  criticism(批评,批判)—autocriticism(自我反省,自我检讨) 
  be:to treat as the stated thing 
  friend(朋友,助手)—befriend(待人如友,帮助) 
  little(很少的,矮小的,很少)—belittle(轻视,使渺小,使……显得渺小) 
  bi: two;twice;double 
  lingual(语言的)—bilingual(能说两种语言的) 
  cycle(自行车)—bicycle(脚踏车,自行车) 
  bio:concerning living things 
  chemistry(化学)—biochemistry(生物化学) 
  sphere(圈子)—biosphere(生物圈) 
  by—:less important 
  product(产品,产物,)—by-product(副产品,附加产物) 
  way(路,道路)—byway(小道) 
  centi: hundredth part 
  grade(等级)—centigrade(分为百度的,百分度的,摄氏温度的) 
  meter(米)—centimeter(厘米) 
  co: together, with 
  author(作家,创造者)—coauthor(合著者,共同执笔者,合著) 
  exist(存在,生存)—coexist(共存) 
  col:(used before l) together, with 
  location(位置,场所)—collocation(排列,配置) 
  com:(used before b, m, p)together, with 
  passion(激情,热情)—compassion(同情,怜悯) 
  con:together, with 
  centric(中心的,中央的)—concentric(同中心的) 
  federation(同盟,联邦,联合,联盟)—confederation(联邦) 
  contra:opposite 
  diction(措辞,用语,言语)—contradiction(反驳,矛盾) 
  natural(自然的,自然界的)—contranatural(违背自然的) 
  cor:(used before r) together, with 
  relate(叙述,讲,使联系,发生关系)—correlate(使相互关联,和……相关) 
  respond(回答,响应,作出反应,有反应)—correspond(符合,协调,通信,相当,相应) 
  counter:opposite 
  act(担当,表现,见效)—counteract(抵消,中和,阻碍) 
  attack(攻击)—counterattck(反引力) 
  cross:across;going between the stated things and joining them 
  country(乡下的,乡村的,[方]祖国的,故乡的)—crosscountry(越野的,横过田野的) 
  breed((使)繁殖,教养,抚养,品种,种类)—crossbreed([生物]杂种,异种交配,培育杂种, (使)杂交) 
  de:showing an opposite; to remove; to reduce 
  code(代码,密码)—decode(解码,译解) 
  value(评价,重视)—devalue((=devaluate)减值,贬值) 
  dis:not; the opposite of 
  advantage(优势,有利条件)—disadvantage(不利,不利条件,缺点,劣势) 
  agree(同意)—disagree(不一致,不适宜) 
  honest(诚实的,正直的)—dishonest(不诚实的) 
  em:(used before b,m, p) to cause to become 
  body(赋以形体)—embody(具体表达,使具体化) 
  power(权力,激励)—empower(授权与,使能够) 
  en:to cause to become; to make 
  danger(威胁)—endanger(危及) 
  large(大的,巨大的)—enlarge(扩大,放大) 
  ex:former(and still living) 
  minister(部长,大臣)—exminister(前部长) 
  wife(妻子)—exwife(前妻) 
  extra:outside;beyond 
  curricular(课程的)—extracurricular(课外的,业余的) 
  ordinary(平常的,普通的,平凡的)—extraordinary(非常的,特别的,非凡的) 
  fore:in advance, before; in or at the front 
  arm(臂,武器,装备)—forearm(前臂,准备战斗,预先武装,准备) 
  warn(警告)—forewarn(预先警告) 
  il:(used before l) not 
  legal(法律的,合法)—illegal(违法的,不合规定的) 
  literate(学者,有文化的,有阅读和写作能力的)—illiterate(违法的,不合规定的) 
  im:(used before b,m,p)not 
  moral(道德(上)的,精神的,道德)—immoral(不道德的,邪恶的,放荡的,淫荡的) 
  possible(可能的)—impossible(不可能的) 
  in:not 
  direct(径直的,直接的)—indirect(间接的,迂回的) 
  sensitive(敏感的,灵敏的)—insensitive(对……没有感觉的,感觉迟钝的) 
  infra:below in a range; beyond 
  red(红(色)的)—infrared(红外线的,红外线) 
  structure(结构,构造)—infrastructure(下部构造,基础下部组织) 
  inter:between;among 
  change(改变,变化)—interchange((指两人等)交换,相互交换) 
  national(国家的,民族的)—international(国际的,世界的,国际性组织,国际比赛) 
  intra:inside, within;into 
  city(城市,都市)—intracity(市内的) 
  department(部,局,处,科,部门,系,学部)—intradepartment(内部) 
  ir:(used before r)not 
  regular(规则的,有秩序的)—irregular(不规则的,无规律的) 
  responsible(有责任的,可靠的)—irresponsible(不负责任的,不可靠的) 
  kilo:thousand 
  gram(克,)—kilogram([物]千克,公斤) 
  meter(米)—kilometer(公里) 
  macro:large, esp.concerning a whole system rather than particular parts of 
  particular parts of 
  economics(经济学)—macroeconomics(宏观经济学) 
  structure(宏观结构)—macrostructure(宏观结构) 
  mal:bad or badly 
  function(官能,功能,作用)—malfunction(故障) 
  treat(宴请,款待)—maltreat(虐待,滥用) 
  micro:extremely small 
  computer(计算机,电脑)—microcomputer(微进化) 
  electronics(电子学)—microelectronics([电子]微电子学) 
  mid:middle 
  day(天,白天)—midday(正午) 
  night(夜,夜晚)—midnight(午夜) 
  mini:small;short 
  bus(公共汽车)—minibus(小型公共汽车) 
  skirt(裙子)—miniskirt 
  (迷你短裙,超短裙) 
  mis:bad or badly;wrong or wrongly 
  fortune(运气,好运)—misfortune(不幸,灾祸) 
  understand(懂,了解)—misunderstand(误解,误会) 
  mono:one;single 
  plane(飞机)—monoplane(单翼机) 
  tone(音调,语调)—monotone(单调的,单调) 
  multi:more than one;many 
  purpose(目的,意图)—multipurpose(多种用途的,多目标的) 
  national(国家的,国立[有]的,民族的)—multinational(多民族的,) 
  non:not 
  resident—non()resident 
  sense理性,认识—nonsense(胡说,废话) 
  out:outside;eyond 
  live(活的,生动的)—outlive(比……长命,比……耐久) 
  door(门,通道,家,户)—outdoor(室外的,户外的,野外的) 
  over:too much;above; additional 
  head(头,头的,主要的)—overhead(在头上的,在头顶上,在空中,在高处) 
  time(时间,时侯,时机,)—overtime(超时,加班,延长时间,超时的,加班的,加班地,使超时) 
  poly:many 
  centric(中心的,中央的)—polycentric(多中心的) 
  syllabic([语]音节主音,音节的)—polysyllabic(多音节的) 
  post:later than;after 
  graduate((大学)毕业生,研究生,(使)(大学)毕业)—postgraduate(研究所学生,研究生,毕业后的) 
  war(战争,作战,打仗)—postwar(战后的) 
  pre:before;in advance 
  pay(薪水,工资,支付)—prepay(预付) 
  war(战争,作战,打仗)—prewar(战前的,在战前) 
  pro:in favor of, supporting 
  America(<美>美国,美洲(包括北美和南美洲))—proAmerica 
  abortion—proabortion(流产,堕胎,失败,夭折,中止,早产) 
  pseudo:not real;false 
  name(姓名)—pseudonym(假名,笔名) 
  science(科学,自然科学)—pseudoscience(假科学,伪科学) 
  re:again;back to the former state 
  unite(联合,团结)—reunite((使)再结合) 
  use(使用)—reuse(再使用,重新使用) 
  self:by means of oneself or itself;of, to, with, for, or in oneself or itself 
  employed(雇用,用,使用)—selfemployed 
  taught(teach的过去式和过去分词)—selftaught 
  semi:half;partly 
  circle(圆周,圆形物)—semicircle(半圆形) 
  final(决赛)—semifinal(半决赛) 
  step:not by birth but through a parent who has remarried 
  mother(母亲,妈妈)—stepmother(继母) 
  children(孩子,孩子们)—stepchildren(继子,继女) 
  sub:under,below;less imortant;part of the stated bigger whole 
  divide(分,划分,分开,隔开)—subdivide(再分,细分) 
  section(部分)—subsection(分部,分段) 
  super:more, larger, greater than usual 
  market(市场)—supermarket(超级市场) 
  natural(自然的,自然界的,普通的,正常的)—supernatural(超自然的,神奇的,超自然物,不可思议的事) 
  tele:at or over a long distance;by or for television communication—telecommunication 
  screen(屏,银幕)—telescreen(电视屏幕,荧光屏) 
  therm(o):concerning heat 
  chemistry(化学)—thermochemistry(热化学) 
  meter(计,表)—thermometer(温度计,体温计) 
  trans:across, on or to the other side of; between 
  Atlantic(大西洋)—transatlantic(大西洋彼岸的) 
  plant(种植,栽培,培养)—transplant(移植,移种) 
  tri:three;three times 
  angular(有角的)—triangular(三角形的) 
  cycle(自行车)—tricycle(三轮车,机器三轮车) 
  ultra:beyond;very, extremely 
  modern(近代的,现代的)—ultramodern(超现代化的) 
  sound(声音,语音)—ultrasound(超频率音响) 
  un:not 
  certain(确定的,必然的,可靠的)—uncertain(无常的,不确定的,不可预测的,靠不住的) 
  fortunate(幸运的,幸福的)—unfortunate(不幸的,使人遗憾的) 
  under:too little;below 
  develop(发展,显影)—underdevelop((使)发展不完全, (使)显影不足) 
  sea(海洋,大浪)—undersea(海面下的) 
  uni:one;single 
  form(形态,构成)—uniform(统一的,相同的) 
  directional(方向的)—unidirectional(单向的,单向性的) 
  vice:nextin the rank;below 
  chairman(主席,会长)—vicechairman(副主席,副议长) 
  president(总统,会长,行长)—vicepresident(副总督,副省长) |   
 
 
                    
                     
 
 
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