词根lag=do,act做,动agent代理人lann,enn=year年annual每年的,年度的laudi,audit=hear听audible听得见的lbell=war战争rebellion反叛,反抗lbrev=short短abbreviate缩短,节略lcas=down落下occasion发生;时机lcand=bright白,光candle蜡烛lced,ceed=go行走precedent先行的,在前lcept=take拿,取exception例外,除外lcert,cern=clear搞清,区别certify证明;保证lceler=fast快,速celerity迅速,敏捷lcid,cis=cut,kill切,杀suicide自杀lcirc=ring环,,圆circle圆,圈,环状物lclaim,clam=cry,shout喊叫exclaim呼喊,惊叫lclar=clear清楚的,明白的clarify澄清;使清楚lclud,clus=close,shut关闭exclude排斥,拒绝,接纳lcogn=know知道cognition认知lcord=heart心cordial衷心的,诚心的lcorpor,cor=body体corporation团体,社团lcred=trust相信,信任credibility可信,可靠lcret,creet=depart区别discrete分立的lcruc=cross十字crucify把……钉在十字桇上;折磨lcur=care关心,挂念,注意security安全lcru,curs,cour,cours=run跑cruise巡航舰ldict,dic=say言,说dictator独裁者,口授者ldit=give给edit编辑ldon=give给donor赠与者ldu=two二dual双的lduc,duct=lead引导conduct引导,指导,经营lequ=equal等,均,平equal相等的,平等的lfact,fac=do,make做,作factory工厂lfer=bring,carry带,拿different不同的,相异的lflor,olour=flower花florid如花的,华丽的lflu=flow流fluency流利,流畅lfus=pour灌,流,倾泻refuse拒绝,拒受lgrad=step,go,grade步,走,级gradual逐步的lgram=write写telegram电报lgraph=write,writing写,画photograph照相,拍照lgress=go,walk行走progress进步lhabit=dwell居住cohabit同居lhibit=hold拿,持exhibit展出,展览lhospit,hosp=guest客人hospitable好客的lit=go行走exit出口,退出lleg=lect说legend传说lject=throw投掷projection投掷,发射llect,leg,lig=choose,gather选,收elect选举llev=raise举、升elevate抬起,使升高lliber=liberty自由liberation解放lliter=letter文字,字母literate识字的,有文化的lloc=place地方local当地的llog=speak言,说dialogue对话lman=dwell居住mansion宅邸,大厦lman,main=stay停留remain留下,逗留lmanu,man=hand手manuscript手稿lmar=sea海marine海上的,航海的lmedi=middle中间mediate居中调解,调停lmemor=memory,mindful记忆,记住的memory记忆,记忆力lmerg,mers=sink沉emerge浮现,出现lmigr=move迁移migrate迁移,移居lmini=small,less小minimum最小数lmir=wonder惊奇,惊异admire赞赏,钦佩lmit=send送transmit传送lmot,mob=move移动motion运动,动lmort=death死mortal终有一死的lnov=new新novel新的,新奇的lnumer=number数numeral数字,[语]数词loper=work工作operation手术,工作,操作lori=rise升起orient东方,东方的lpaci=peace和平pacify使和平,抚慰lpel=push,drive推,逐,驱propel推动lpend,pens=hang悬挂pendent悬空的,悬而未决的lpet=seek追求compete竞争,比赛lphon=sound声音phone电话lpict=paint画,描绘picture绘画,图片lplic=fold折,重叠explicate解释,说明lpon=put放置postpone推后,推迟lport=carry拿,带,运import输入,进口lpose=put放置position位置态度lpreci=price价值precious宝贵的,珍贵的lrect=right,straight正,直correct改正,纠正lrupt=break破rupture破裂,使裂开lscend=climb爬,攀行transcend超出,超越lsci=know知science科学lsec,sequ=follow跟随sequence继续,连续lsent,sens=feel感觉sentiment感情,思想感情lsid=sit坐preside主持,指挥lsist,ist=stand立assist帮助,援助lspect=look看spectate出席,观看lspir=breathe呼吸inspire鼓舞,吸入ltain,ten=hold握,持,守contain容纳,包含,内装ltect=cover掩盖detect侦查,发觉ltempor=time时temporary暂时的,临时的ltend,tens=draw拉tension拉紧,引力ltent,tract=draw拉,抽,引tractor拖拉机lun,uni=one一unify统一,使成一体lvac,vacu=empty空vacancy空白,空虚lvad,vas=walk,go行走invasion入侵,侵略lven=come来convene召集(会议),集会lvert,vers=turn转subvert推翻,颠覆lvis,vid=see看visible可见的,看得见的前缀一.表示否定的前缀1.dis-加在名词、形容词,动词之前。disadvantage(缺点)dishonorable(不光彩的)disagree(不同意)2.in-加在形容词,名词之前incorrect(不正确的),inability(无能,无力),inaccurate(不准确的)3.im-加在字母m,b,p之前impossible(不顺能的),impolite(不礼貌的),impudence(厚颜无耻)4.il-加在以1开头的词前illegal(非法的),illiterate(文盲的,无文化的)illogical(不合逻辑的)5.ir-加在以r开头的词前irregular(不稳定的),irresistable(不可抵抗的),irresolvable(不能解决的)6.un-加在名词,形容词,副词之前unfinished(未完成的)undoubted(无疑的)unemployment(失业)7.non-加在形容词,名词前non-existence(不存在),non-essential(不主要的)8.mis-加在动词、名词之前misunderstand(误解),misjudge(误判),misleading(误导)9.dis-加地动词之前disappear(消失),disarm(解除武装),disconnect(失去联系)10.de-加在名词,形容词之前demobilize(遣散;使…复员)decolor(脱色,漂白)11.anti-加在名词、形容词之前anti-Japanese(抗日战争),anti-social(厌恶社会的,反社会的)12.counter-加在名词、动词前counterattack(反攻,反击),counteract(抵抗,阻碍)二.表示“前before”的前缀1.pre-preconception(成见),pre-exsiting(先于……而存在的),preface(前言)2.Ante-anteroom(前室,接待室),antecessor(先行者,先驱者)3.Fore-forehaed(前额),foreground(前景),foresee(预见,先见)4.Pro-programme(计划),prologue(序幕)5.Ex-ex-president(前任总统)ex-wife(前妻)三.表示“后-post”的前缀1.post-post-war(战后),post-plsition(后置词),postmeridian(下午)四.表示“低”、“下”的前缀1.Hypo-Hypocrisy(伪善,虚伪),hypothesis(假设),pypocholoride(次氯酸盐)2.Infra-Infra-red(红外线),infrahuman(低于人类的),infrasonic(亚声的,次声的)3.Sub-sub-way(地铁),submarine(海下的),subtitle(副标题)五.表示“回”、“再次”、“向后”的前缀1.Re-Refuel(给…加油),reinforce(加强),reconstruct(重建),return(返回)2.Retro-Retrograde(倒退的),retrospect(回顾)六.表示“共同”、“和”的前缀1.Co-co-exist(共存),co-operate(合作),co-education(男女同校)七.表示“相互”、“之间”的前缀1.Inter-Interchangeble(可互换的),international(国际的),inter-national(交往)八.表示“出”、“超出”的前缀1.Ec-Eclipse(蚀),ecstasy(狂想)2.Extra-Extraordinary(非凡的),extramural(校外的),extrasensory(超感觉的)九.表示“超过”的前缀1.hyper-,preter-,super-,sur-,ultra-hyper-sensitive(过敏的),preterhuman(超人的)十.其它的前缀1.auto-自automatic(自动的),auto-autobilgraphy(自传)2.mal-坏,恶Malnutrition(营养不良),maltreat(虐待)3.Micro-Microscope(显微镜),microtome(切片机)4.Tele-远Telegram(电报),telephone(电话),telescope(望远镜)5.Demi-,semi-hemi-Semi-circle(半圆),hemisphere(半球),demilune(半月,新月)6.Uni-,mono-(单一,单独)Monotone(单调),monologue(独白),uniform(制服)7.Bi-,di-二Biyearly(二年一次的),biweekly(二周一次的),dichloride(二氯化物)8.Tri-三Triangle(三角),tripld(三角架)9.Multi-多multi-colored(颜色多样的),multi-national(多国的)10.Poly–多Polygon(多角形),polytomic(多原子的)11.Arch-首领archbishop(大主教),architect(建筑师)12.bene-善,好benefit(利益),benevolence(善意)13.homo-同homosexual(同性恋的),homograph(同形异义字)14.neo新neo-colonialism(