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四级常用词根及前缀、后缀
1.
常用词干（
68
个）
ag,
act
做
agent, active;
aster,
astro
星
disaster, astronomy;
audi
听
audience,
audio-visual(AV)
cap,cept,ceive
拿、取
capture, receive;
bio
生命
biochemist,
antibiotic;
cede,ceed,cess
行、移动
procedure,
successive;
cide,
cis
切，杀
suicide, decision;
clued, clus
闭合
include,
exclusion;
cur,
curr
跑
occur, currency;
cred
相信
creditor, incredible;
cycle
圆、
环
bicycle,
recycle;
fac,fic,fect,fa
ct
做、
制
affect,ficti
on,infect;
dict,
dic
说
dictionary,
indication;
duct,
duc
引导
educate,
conduct,
prouuce;
fer
运送、带
transfer,
conference;
flect, flex
弯、曲
reflect,
flexible;
flu
流
fluid,
influence, fluent;
gen
起源、种类、人种
intelligence,
generation;
geo
地球、土地
geography,geometry;
grad,
gress
走
gradual, aggressive;
gram
写、记录
grammar,
telegram;
graph
写、记录
;
photo
光
photograph;
ject
投、掷、抛
reject,
project, injection;
med
中间
immediately,
medium;
lect,
leg
挑选、采集、读
elect, collect,
legend;
mob, mot, mov
移动
automobile, promote
mani,manu
手
manual,
manipulate;
miss,mit
送、派、放开
transmit,
permit;
pel
推、逐
expel,
propeller;
pend
悬挂
indispensable,
suspend;
phon
声
microphone,
phoney;
pon,
pos
放置
postpone, compose;
port
搬运、带
transport,
portable;
rupt
裂、破坏
interrupt, rupture;
scribe
写
describe,
prescribe;
spec,
spect,spic
看
perspective,
respective;
volv
转、滚动
revolve,
revolution;
tract
拖、拉、吸引
tractor,
attract,
distraction;
vid,
vis
看见
evident,
invisible;
te
nd,tens,tent
伸张、
倾向
extend,
intense
2.
常用前缀（
49
个）
anti-
反、抗、对立
antisocial
, antibody;
auto-
自己
/
动的
autobiography,
autonomous;
be-
使得、
视作
become,
belittle;
bi-
两，
双面
bilingual,
bimonthly;
centi-
百
century,
centigrade;
co-
共
同，联合
coordinate,
cooperate;
con-,col-,com-,cor-
与、和、共、全
colleague, combination, conform,
coordinate;
contra-
相反、针对
contradiction,contrary;
counte
r-
反、逆对、等
counteract,
counterpart
de-
取消、脱离、向下
decline, departure;
dis-
否定、除去
discriminate, disorder;
en(m)-
使成为、使进入
enable,
enclose;
ex-
向外、出自、超出、离开
exceed, exclude
extra-
越出、超过
extraord
inary, extreme;
fore-
前面、预先<
/p>
forehead, forecast;
in(m)-,i
l-,ir-
不，无，非
illegal,
important;
in-
在……里，内部
inclusive, indoor;
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