E.g.Infections are more likely in those suffering from malnutrition.
前缀：
肯否、先后、方向、数字、大小、好坏、相同、程度、频度、使动
肯否
ab- abnormal/ abuse / abhor
anti- antisocial / anti-aggression /antiallergic
counter- counteract/ counterclockwise
contra- contradiction
de- debase/ decay / degrade / decompose
dis- disapprove/ disadvantage / distrust
i(l, m, n, r) – illegal/ impractical / invisible / irrational /
inaccurate
mis- misery/ misleading / misdeed / misconduct
non- nonprofit/ noncontroversial / nonconformist
un- unconscious/ unknown
先后
ex- ex-president/ ex-wife
fore- forecast / foresee / foretell
pre- prehistory/ prevent
pro- prospect/ propose
post- postwar/ postgraduate
retro- retrospect/ retrogress
方向
intro- introverted/ introspect / introduce
extra- extraverted/ extravagant
inter- interpersonal/ internal / interconnect
trans- transform/ transfer / transit / transport /
transmit
数字
hemi- / semi- hemicycle/ semiautomatic / hemisphere
mono- monolog/ monotonous
uni- uniform/ unique
ambi- ambiguous
amphi- amphibian
bi- bipedal/ bilingual
di- dioxide
tri- triangle/ triple
centi- centipede/ centimeter
kilo- kilogram/ kilometer
milli- milligram
multi- multimedia/ multiform
poly- polygon/ polytechnic
co(l, m, n, r)- collect/ cooperate / compile / consume / corrupt
大小
macro- macroclimate/ macro-economics
micro- microwave/ micro-economics
mini- minimum/ miniature
好坏
bene- benefit/ beneficent
mal- malicious/ maltreat / malfunction
相同
homo- homosexual/ homograph / homogeneous
sy(m, n, l)- sympathy/ synthetic / syllable
程度
over- overburden/ overload / overfunded
extra- extraordinary/ extravagant
sub- subordinate/ subconscious
under- underestimate/ underline
super- superficial/ super-system
ultra- ultraviolet
out- outweigh/ outgrow
频度
re- revive/ restore / reconsider
a(b, c, f, g, p, s, t) abbreviate / accelerate / affiliate / aggravate
/ appoint /assimilate / attract
使动
be- befriend/ belittle
en- enlarge/ enable
em- embody/ embrace
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)
E.g.Such measures would be highly impracticable and almost impossible to
apply.
今天发的是一个根据含义分类的词缀有序篇，考研大战前夕，草草扫一眼，万一遇到并且能想起来就赚到了~~~
词根 dis
他看到一个黑漆漆的东西从浓密的树叶后消失了。
后缀
名词、动词、形容词
名词
1.人：
-an / -ian / -ant / -ent Asian / historian / applicant / dependent /
-ee / -er / -or / ese examinee / pioneer / collector / Chinese
-ist dentist/ socialist
2.状态、性质、类属：
-al: arrival / approval / refusal
-age: leakage / shortage / shrinkage
-ance / -ence / -ancy / -ency / -cy: importance /independence / vacancy
/ frequency / accuracy
-ery: slavery / bravery /
-ion / -tion / -sion: fashion / domination /occasion
-y / -ty / -ity: entry / difficulty / visibility
-ment: punishment
-ship: leadership / scholarship
-ness: conciousness
-th: growth / depth
-ure: departure / expenditure
3.学科
-logy / -ics: ideology / archaeology / economic /politics
动词
-ate aggravate/ abbreviate
-en widen/ broaden / weaken / lengthen
-ify rectify/ purify / magnify / certify
-ish finish/ perish / abolish
-ize / -ise homogenize/ popularize
形容词
-able / -ible: noticeable / incredible
-al: functional / natural
-ed: cultivated / talented
-ful: doubtful / peaceful
-ic: fantastic / herotic / illogical
-id: fluid / acid
-ish: selfish / womanish
-ite: definite / opposite / favorite
-less: homeless / shameless
-ous / -eous / -ious: loquacious / advantageous /vicious
-ly / -y: irony / fatherly
- non-加在形容词， 名词前 non-existence (不存在)， non-essential ，
(不主要的)，non-electrical(非电的)
E.g.You should disconnect the wireless set before you make adjustments
inside it.
之前发过一个词缀乱序篇在这里
able能够 disable 使丧失能力
disadvantage n. 不利，不利条件;
agree同意 disagree不同意
我们只好把发动机全部拆开以寻找故障原因。
词根词缀那些事儿—常用词根词缀：90个最常用的词根+138个前缀+328个后缀
太多了也记不住，这次先分享这些吧(≧∇≦)/
儿童可能无法将自己的幻想与真实世界区分开来。
-
im-加在字母 m,b,p 之前 impossible (不可能的)， impolite (不礼貌的)，
impudence (厚颜无耻) -
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) -
ir加在以 r 开头的词前 irregular (不稳定的) ， irresistable
(不可抵抗的) ， irresolvable(不能分解的，不能解决的)
E.g.Parents fear they might overstep these invisible boundaries…
1.pre：preconception(成见)，pre-exsiting
(先于……而存在的)，pre-selection(选举前的)， preface(前 言)
disassemble v. 拆开
- dis－加在名词、 形容词， 动词之前。
disappear. v. 消失
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)，
antidite(解毒药)
他在那儿的所见让他对一切政****生了一种深深的不信任感。
ps:认真记记对分析单词和阅读时猜测单词意思都很有帮助哦
E.g.The election was di**issed as illegitimate by the opposition.
12.counter-加在名词、动词前 counterattack(反
攻，反击)，counteract(抵抗，阻碍)，counterrevolution(反革命)
www.1331.com90个最常用的词根+138个前缀+328个后缀，今日分享一下背单词的小妙招。E.g.Many senior managers are technologically illiterate.
背单词可是一些同学的一大难题啊，记了忘，忘了背，背了又忘，真是愁人啊，今日分享一下背单词的小妙招，看懂了可以让你的词汇量翻倍哦。
- il-：表示“不”
3.Fore：forehaed(前额)，foreground(前景)，foreman(工头，
领班)，foresee(预见，先见)，foretell(预言)
invisible不可见的;
2.Ante：anteroom(前室，接待室)，antecessor(先行者，先驱 者)
- dis-表示“不，**”
8.mis－加在动词、名词之 前 misunderstand (误解) ， misjudge (误判)，
misleading (误导)， misfortune (不幸)
许多**经理都对技术知之甚少。
【1】 表示否定的前缀
differentiate v.区分
- de-加在名词， 形容词之前 demobilize(遣散； 使……复员) ， decolor
(脱色， 漂白)
他的行为变得越来越不理智了。
前缀记忆法
2018考研英语单词：需掌握5个反义否定前缀
advantage 优点 disadvantage 缺点
你应先拔掉无线电插头,再做内部调整。
5.Ex：ex-president(前任总统)， ex-wife (前妻)
这样的措施非常不切实际,几乎不可能付诸实施。
4.Pro：programme (计划)，prologue(序幕)
E.g. Depression is the third thing that works to my patients’
disadvantage.
9.dis-加地动词之前 disappear(消失)，disarm(解除武装)， disconnect
(失去联系)
impracticable行不通的
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)
- mal- bad，badly：恶，不良
二. 表示“前 before”的前缀
营养不良的人更有可能被传染。
- di-,dif-, dis-：away，nega**********不
在记忆和背诵考研英语单词时，我们一般**词根词缀法记忆法，这种方法科学合理，记忆牢固并且迅速，常用前缀、后缀可前往查看。词汇的前缀一般修饰或者改变单词的意思，词汇的后缀一般改变单词的词性。为了广大考生更好更快的记忆单词，对考研英语词汇常**********了汇总，希望对2018年考研的广大考生有所帮助。
irrational不合理的;
他说自己在押期间并未遭受拷问和虐待。
illiterate n. 文盲;
maltreat虐待;
distrust. v. 不信任, 怀疑
反对党以不合法为由**接受选举结果。
记忆英语单词的时候，词根词缀很重要。下面小编带你看2018考研英语单词：需掌握5个反义否定前缀。
抑郁是威胁我的病人健康的第三大杀手。
E.g.We had to completely disassemble the engine to find the problem.
malnutrition营养不良
E.g. His behavior was becoming increasingly irrational.
父母担心他们可能会逾越这些无形的界限。
illegitimate a. 非法的
E.g.A child may not differentiate between his imagination and the real
world.
E.g.He saw something dark disappear behind the curtain of leaves.
- im-，in-not，in，**********引申意义
disconnect. v. 分离
2018考研英语单词：需掌握**********望以上的内容能够对你有所帮助。
E.g.He said that he was not tortured or maltreated during his
detention…
E.g.What he saw there left him with a profound distrust of all political
authority.