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词汇扩展(英语前缀、后缀)
转换法：
Choose ----choice, advise----- advice , breath n. ----breathe v.
Bath n.----bathe v. , lose v.----loss n.
Food n.----feed v.
Sale n. ---- sell v.
派生法：
前缀：
否定前缀：un-, in-, im-, dis-, ir, il,
Un-: unlike, unusual, uncertain, unpleasant, unimportant, uncommon,
Unpack, unfold, undress, untruth,
In-: indirect, incorrect, incomplete, independent, invaluable, invisible
Im-: impolite, impossible, immobile, immodest,
Improper
Dis-: dislike, disagree, dishonest
ir-: irregular ,irresponsible
il-: illegal, illogical
2)动词前缀：en-, be-
En-；
Enlarge, enable, enclose, encourage, enjoy
Be-: befool, befriend
3)其他前缀：
1.re-:
Rebuild, rewrite, review, reuse
mis-:
misunderstand, mislead, misplace, misremember,
over-:
oversleep, overwork, overweight, overcareful
under-:
underground ,underworld, undershirt, underpants,
undersell
inter-: international,intercollege
ex-:
exit,export
ex-wife,ex-president,
二．后缀：
1.-er,-or:
Reader, learner, islander, designer, recorder,computer
Inventor, actor, monitor, editor,sailor
2. 名词后缀：
1）-ness:
Carefulness, sadness, weakness, sickness, softness, gentleness
2)-tion: pronunciation(pronounce) , production, action, pollution, invitation, translation, suggestion, promotion,
Satisfaction, attraction
3)-sion :decision, expression, possession, permission, impression
4)-ment:
Development, judgement, government, punishment, movement
5)-ity:
Reality, activity,nationality, minority
3. 形容词后缀：
1.-ful-------less
Careful---careless, hopeful---hopeless,harmful---harmless
Countless,rainless
2.)-y:
Healthy, bloody, worthy ,hungry,
3)-ous；
Dangerous, anxious, various,
4)-al:
National, personal, natural, medical, cultural
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