schoolmates,（一）、常见前缀
1． 表示否定意义的前缀
un: unbelievable uncomfortable unconscious unfair uneasy
unlike unknown unusual unexpected unemployment
unfortunately
in: indirect inevitable incorrect incomplete independent
im: impossible impatient impractical impolite
il: illegal
ir: irrespective irregular irresponsible
mis: mistake misunderstand mislead misfortune misconduct
dis: disadvantage discourage disabled disagree disapprove
discount discover disappear disorder
non: nonsense non-smoking
ab: abuse
anti: anti-Japanese anti-smoking
2． 表示时间、序列的前缀
pre (前,预先): preview preschool prehistory previous
post (后): postwar postgraduate
pro (向前): proceed progress prolong
re (回,再): review recycle react reproduce
recover reform refresh renew restore
3． 表示方向、位置的前缀
inter (在…之间): international interact interview internet
in/im (向内): internal indoor inside interior
import immigrate
ex (向外): export exterior external exceed
under (在下面): underestimate underground underline undergraduate
trans (横过、): transport transplant transform transmit
out (外): outdoor outwards outside
mid (在中间): midnight midday mid-term
4． 表示数量、大小的前缀
uni (一,统一): unique unite unity universal uniform
min (少,减): minor minus minimum
multi (多): multiply multinational multiple
5． 动词性前缀
en: enable enjoy enforce encourage
（二）、常见后缀
1． 常见名词后缀：
ness: weakness illness fitness happiness
ment: treatment statement argument arrangement equipment
management development employment improvement achievement
punishment measurement replacement
ion: invention selection suggestion election education
prevention reflection radiation rejection reaction
instruction distinction devotion innovation attraction
expression impression
tion: intention attention
sion: expansion explosion decision extension collision
ation: invitation realization imagination modernization obligation
foundation determination reservation industrialization application
ship: friendship scholarship ownership relationship hardship
leadership (人):
ity: popularity quality maturity personality publicity
security diversity
dom: freedom wisdom
age: storage package postage marriage shortage
al: refusal removal arrival proposal survival approval
ism: tourism organism criticism
y: discovery recovery injury difficulty delivery
ure: failure pressure exposure departure
ence: difference patience independence absence evidence confidence
ance: distance significance resistance importance ignorance
ist (人): tourist scientist specialist
ant (人): servant immigrant applicant assistant accountant
consultant defendant inhabitant
ian (人): technician musician electrician
or (人): survivor operator inventor governor conductor competitor
er (人): manufacturer consumer customer owner prisoner employer
2． 常见形容词后缀：
ful (充满…的): faithful fearful hopeful fruitful helpful respectful
graceful painful cheerful thoughtful powerful
y (…的): wealthy thirsty worthy hasty lucky noisy faulty
less (无…的): hopeless useless worthless restless helpless meaningless
al (…的): national original practical natural musical occasional
medical formal personal professional experimental
able (能…的、可…的): suitable valuable respectable remarkable
favorable reliable profitable fashionable miserable
noticeable portable reasonable honorable preferable
desirable acceptable comparable comfortable
ly (…的): timely friendly deadly costly
ic (…的): symbolic heroic classic historic organic
ial (…的) : industrial racial commercial beneficial financial influential
ive (…的): respective effective impressive expensive progressive attractive
protective comparative
ious (…的): suspicious mysterious
ous (…的): poisonous humorous dangerous
ish (似…的): childish foolish bookish
ent: different patient independent absent evident confident
ant: distant significant resistant important ignorant
（三）、合成词
gentleman hometown homework housework mankind
Second-hand earthquake playground mainland widespread
spacecraft Postcard Postman taxpayer wildlife
mailbox supermarket Headline deadline timetable
football Pastime hardware spaceship stockholde
