属于派生法。
派生法
由一个词加上前缀或后缀构成一个与原单词意义相近或截然相反的新词叫做派生法。
1. 前缀
除少数前缀外，前缀一般改变单词的意义，但不改变单词的词性。
(1)表示否定意义的前缀
un-unhappy unfinished undress
dis- disagree disbelieve
in[il-(在字母l前)，im-(在字母m,b,p前)，ir(在字母r前)]-inaccurate illegal impolite imbalance irregular
mis-misbehave mislead mistake
non-nonstop nonsmoker
(2)表示其他意义的前缀
en-“使……” enrich enlarge encourage
inter-“相互” international intercontinental
re-“再，又，重” rethink retell recycle
tele-“远程的” telescope telephone telegraph
auto-“自动的” automatic automobile
co-“共同” coworker cooperate coexist
anti-“反对，抵抗” antiwar antifreeze antinuclear
multi-“多” multistory multicultural multicolor
bi-“双，二”bicycle bilingual bilateral
micro-“极小的，微小的” microwave microcomputer
over-“太多，过分” overwork overdo overestimate
self-“自己，本身” self-centered self-confident self-control
under-“在……下面，……下的，不足的” underline, underground, underestimate, underrate
2. 后缀
(1)形容词后缀
-able “可……的，具有……的” acceptable drinkable knowledgeable reasonable
-al“与……有关的” physical, magical, political
-an“属于某地方的人” American African
-ern“方向” southern, northern, eastern
-ful/ less“(没)有……的” helpful, useful, homeless, hopeless
-ish“如……的;有……特征的” foolish childish selfish
-ive“有……倾向的” active attractive expensive
-en“由……制成的” golden wooden woolen
-ous“有(性质)的” famous, dangerous, poisonous
-ly “有……性质的” friendly yearly daily
-y“构成形容词” noisy dusty cloudy
(2)名词后缀
-er / or“表人或用具” farmer, baker, visitor, professor, cooker, container
-ese“某国(人)的” Chinese, Japanese
-ian“某国、某地人;精通……的人” musician, Asian, Russian, technician
-ist“某种主义或职业者” physicist, scientist, communist，socialist
-ess“表女性，雌性” hostess, actress, princess
-ment“行为或其状态” government, movement, achievement
-ness“性质，状态” illness, sadness, carelessness
-tion“动作，过程，结果” invention, organization, translation
-ance/ ence“抽象;行为、性质、状态” importance, appearance, absence, existence
-th“性质、情况” depth, warmth, truth
-ful“(满的)量” handful, spoonful, mouthful
-(a)bility“抽象、性质、状态” possibility, disability, reliability
-al“过程、状态” survival, arrival, approval
-y“性质、情况” modesty, delivery, honesty
-dom“处于……状态;性质” freedom, boredom
-age“状态，行为，身份及其结果” courage, storage, marriage
(3)动词后缀
-fy / ify“使得;变得” simplify, beautify, purify
-en“使成为……;变得” shorten, deepen, sadden
-ize“使成为” apologize, realize, specialize
(4)副词后缀
-ly“方式，程度” freely, truly, angrily
ward(s)“向……” towards, forward, upwards
(5)数词后缀
-teen“十几” fourteen, eighteen, thirteen
-ty“整十位数” forty, fifty, sixty
-th“序数词” twelfth, twentieth
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