aero-：concerning the air of aircraft
plane—aeroplane
space—aerospace
anti-：against；opposite of
nuclear—antinuclear
matter—antimatter
war—antiwar
auto-：of or by oneself
biography—autobiography
criticism—autocriticism
be-：to treat as the stated thing
friend—befriend
little—belittle
bi-：two；twice；double
lingual—bilingual
cycle—bicycle
bio-：concerning living things
chemistry—biochemistry
sphere—biosphere
by-，bye-：less important
produce—by-produce
way—byway
centi-：hundredth part
grade—centigrade
meter—centimeter
co-：together，with
author—coauthor
exist—coexist
col-：(used before l ) together，with
location—collocation
com-：(used before b，m，p ) together，with
passion—compassion
con-：together，with
centric—concentric
federation—confederation
contra-：opposite
diction—contradiction
natural—contranatural
cor-：(used before r ) together，with
relate—correlate
respond—correspond
counter-：opposite
act—counteract
attack—counterattack
cross-：across；going between the stated things and joining them
country—crosscountry
breed—crossbreed
de-：showing an opposite；to remove；to reduce
code—decode
value—devalue
dis-：not；the opposite of
advantage—disadvantage
agree—disagree
honest—dishonest
em-：( used before b，m，p ) to cause to become
body—embody
power—empower
en-：to cause to become；to make
danger—endanger
large—enlarge
ex-：former ( and still living )
minister—ex-minister
wife—ex-wife
extra-：outside；beyond
curricular—extracurricular
ordinary—extraordinary
fore-：in advance，before；in or at the front
arm—forearm
warn—forewarn
il-：( used before l ) not
legal—illegal
literate—illiterate
im-：( used before b，m，p ) not
moral—immoral
possible—impossible
in-：not
direct—indirect
sensitive—insensitive
infra-：below in a range；beyond
red—infrared
structure——infrastructure
inter-：between；among
change——interchange
national——international
intra-：inside，within；into
city——intracity
department——intra-department
ir-：(used before r)not
regular——irregular
responsible——irresponsible
kilo-：thousand
gram——kilogram
meter——kilometer
macro-：large，esp.concerning a whole system rather than particular parts of
economics——macroeconomics
structure——macrostructure
mal-：bad or badly
function——malfunction
treat——maltreat
micro-：extremely small
computer——microcomputer
electronics——microelectronics
mid-：middle
day——midday
night——midnight
mini-：small；short
bus——minibus
skirt——miniskirt
mis-：bad or badly；wrong or wrongly
fortune——misfortune
understand——misunderstand
mono-：one；single
plane——monoplane
tone——monotone
multi-：more than one；many
purpose——multipurpose
national——multinational
non-：not
resident——non(-)resident
sense——nonsense
out-：outside；beyond
live——outlive
door——outdoor
over-：too much；above；additional
head——overhead
time——overtime
poly-：many
centric——polycentric
syllabic——polysyllabic
post-：later than；after
graduate——postgraduate
war——postwar
pre-：before；in advance
pay——prepay
war——prewar
pro-：in favor of，supporting
America——pro-America
abortion——pro-abortion
re-：again；back to the former state
unite——reunite
use——reuse
self-：by means of oneself or itself；of，to，with，for，or in
oneself or itself
employed——self-employed
taught——self-taught
semi-：half；partly
circle——semicircle
final——semifinal
step-：not by birth but through a parent who has remarried
mother——stepmother
children——stepchildren
sub-：under，below；less important；part of the stated bigger whole
divide——subdivide
section——subsection
super-：more，larger，greater than usual
market——supermarket
natural——supernatural
tele-：at or over a long distance；by or for television
communication——telecommunication
screen——telescreen
therm(o)-：concerning heat
chemistry——thermochemistry
meter——thermometer
trans-: across，on or to the other side of ; between
Atlantic—transatlantic
plant—transplant
tri-: three; three times
angular—triangular
cycle—tricycle
ultra-: beyond; very，extremely
modern—ultramodern
sound—ultrasound
un-: not
certain—uncertain
fortunate—unfortunate
under-: too little; below
develop—underdevelop
sea—undersea
uni-: one，singer
form—uniform
directional—unidirectional
vice-: next in the rank; below
chairman—vice-chairman
president—vice-president