表示人：
-an American historian physician musician -ar liar scholar
-ee trainee employee examinee
-er trainer employer examiner receiver 构成抽象名词：
-acy diplomacy
-age courage percentage -al refusal arrival denial
-ance / ence appliance endurance importance difference -alility responsibility possibility
-cy democracy accuracy infancy -dom freedom kingdom
-hood childhood, manhood, falsehood -ion, -sion, -tion, -ation, -ition,
action, solution, conclusion, destruction, expression, correction -ism, socialism, criticism, colloquialism, heroism -ist specialist economist
-ity purity, reality, ability, calamity
ment, treatment, movement, judgment, punishment, argument -ness goodness, kindness, tiredness, friendliness -th, depth, wealth, truth, length, growth -tude, latitude, altitude(海拔)
-ure, exposure, pressure, failure, procedure(手续)，
-y glory, history, victory, inquiry photograghy philosophy -grapy biography, calligraphy, geography -ship relationship friendship
动词后缀 -ate
deviate背离、偏离， accelerate加速， degenerate变性，operate操作，手术 vibrate振动、颤动，migrate移动
anticipate预期、期望，abbreviate缩写
-en形容词构成动词，表示变、加、使……， weaken，soften，thicken，strenghten，shorten， deepen加深、深化，harden使……变硬，lengthen，loosen，quicken， lighten减轻，sharpen变尖锐。
-ize neutralize中和，standardize标准化，，depolarize去极化，sensitize Modernize organize
形容词性后缀
-able 表示可能的，可以的，
excitable，acceptable，movable， uncomfortable
-al表示有……的属性
Regional natural，special central, typical -ant
Significant persistant（从动词persist来的），resistant抵抗的，反抗的（自动词resist派生），important
-ar表示……特征的，……形状的 Regular muscular circular
-ary表示与……有关的
Ordinary anniversary voluntary
-ent与-ant同类， consisten different sufficient convenient -ful useful successful plentiful helpful -ible与-able相同， Visible ，impossible -ic specific，magnetic，，dramatic -ish reddish yellowish boyish
-ive relative有关的，相关的（由动词relate派生的），
sensitive imaginative conservative保守的，effective
-less表示没有……的， useless lifeless hopeless fruitless
-ous dangerous generous tremendous ，previous
副词性后缀
-ly concurrently widely scarcely ，immediately
rarely slowly quickly
-ward（s）加在前置词上，构成副词，表示方向，
backward（s）向后，upward（s）向上。
-wise otherwise clockwise -ways always sideways
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