-加在名词、形容词,动词之前。disadvantage(缺点),dishonorable(不光彩的),disagree(不同意)-加在形容词,名词之前incorrect(不正确的),inability(无能,无力),urate(不准确的)-加在字母m,b,p之前impossible(不可能的),impolite(不礼貌的),impudence(厚颜无耻)-加在以l开头的词前illegal(非法的),illiterate(文盲的,无文化的),illogical(不合逻辑的)-加在以r开头的词前irregular(不规则的、不整齐的),irresistible(难以抗拒的),irresolvable(不能分解的,不能解决的),irresponsible,-加在名词,形容词,副词之前unfinished(未完成的),undoubted(毫无无疑的),unemployment(失业)-加在形容词,名词前non-existence(不存在),non-essential(非主要的),non-electrical(非电的),non-smoker(非吸烟者),nonsense,ess,non--加在动词、名词之前misunderstand(误解),misjudge(误判),misleading(误导性的),misfortune(不幸),misbehave,misspell,mistaken,-加在动词之前disappear(消失),disarm(解除武装),disconnect(失去联系,断开连接)-加在名词,形容词之前demobilize(遣散;使…复员),decolor(脱色,漂白),pose(分解,腐烂)-加在名词、形容词之前anti-JapaneseWar(抗日战争),anti-social(厌恶社会的,反社会的),antidote(解毒药),antibody,antigen,antibiotics,-加在名词、动词前counter-attack(反攻,反击),counteract(抵抗,阻碍)counterrevolution(***),counter-clockwise(逆时针方向),counter-culture,“before”-preconception(成见),pre-existing(先于……而存在的),pre-selection(选举前的),preface(前言,序言),prescribe(开药),predict(预言),-anteroom(前室,接待室),antecessor(先行者,先驱者),anticipate(预期)-forehead(前额),foreground(前景),foreman(工头,领班),foresee(预见),foretell(预言),forearm,forefather,-programme(计划),prologue(序幕),probe,proceed,-ex-president(前任总统),ex-wife(前妻),ex-con(前罪犯)“后”-post-war(战后),post-position(后置词),postmeridian(下午),post-mortem(验尸的,死后的),postpone(推迟,延后),postgraduate(研究生)“低”、“下”-Hypocrisy(伪善,虚伪),hypothesis(假设),hypochlorite(次***酸盐)-Infra-red(红外线),infrastructure(基础设施),infrasonic(次声的)-Sub-editor(副编辑),subway(地铁),sub-conscious(下意识的),submarine(海下的,潜艇),sub-tropical(亚热带的),subtitle(副标题),suburb(郊区)“回”、“再次”、“向后”-Refuel(给…加油),retranslate(再译),reinforce(加强),reconstruct(重建),return(返回),repay(偿还),replace(替换,放回原位)-Retrograde(倒退的),retrospect(回顾)“共同”、“和”-co-exist(共
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