附一：四級常用後綴
1. 名詞後綴
1)-or/er/ess/crat/cis:做某件事情或職業的人或物：worker, debtor
2)-acy, 表示"性質，狀態，境遇" democracy, accuracy, diplomacy
3)-ance, -ence表示"性質，狀況，行為，過程，總量，程度” importance, diligence, difference, obedience
4)-ancy, -ency, 表示"性質，狀態，行為，過程" frequency, urgency, efficiency,
5)-bility, 表示"動作，性質，狀態" possibility, flexibility, feasibility,
6)-dom, 表示"等級，領域，狀態" freedom, kingdom, wisdom
7)-hood, 表示"資格，身份, 年紀，狀態" childhood, manhood, falsehood
8)-ion, -sion, -tion, -ation, -ition, 表示"行為的過程，結果，狀況" action, solution, conclusion, destruction, expression, correction
9)-ism, 表示"制度，主義，學說，信仰，行為" socialism, criticism, colloquialism, heroism
10)-ity, 表示"性質，狀態，程度” purity, reality, ability, calamity
11)-ment, 表示"行為，狀態，過程，手段及其結果 treatment, movement, judgment, punishment, argument
12)-ness, 表示"性質，狀態，程度" goodness, kindness, tiredness, friendliness
13)-ship, 表示"情況，性質，技巧，技能及身份，職業” hardship, membership, friendship
14)-th, 表示"動作，性質，過程，狀態" depth, wealth, truth, length, growth
15)-tude, 表示"性質，狀態，程度" latitude, altitude(海拔)
16)-ure, 表示"行為，結果" exposure, pressure, failure, procedure(手續)，
17-grapy, 表示"……學，寫法” biography, calligraphy, geography
18)-ic, ics, 表示"……學……法" logic, mechanics, electronics, linguistics
19)-ology, 表示"……學……論”biology, zoology, technology(工藝學)
20)-nomy, 表示"……學……術" astronomy, economy, bionomy(生態學)
2. 形容詞後綴
(1)帶有“屬性，傾向，相關”的含義
1)-able, -ible, visible, flexible
2)名詞-ish, foolish, bookish, selfish(注意accomplish, vanish)
3)-ive, active, sensitive, productive
4)-like, manlike, childlike
5)名詞-ly, manly, fatherly, scholarly, motherly
6)-some, troublesome, handsome
7)-ful, beautiful, wonderful, helpful, truthful
8)-ous, dangerous, generous, courageous, various
9)-ent, violent
10)-most, foremost, topmost
(11)less, 表示否定，countless, stainless, wireless
3. 動詞後綴
1)-ize, ise, 表示"做成，變成，……化“modernize, mechanize, democratize, organize
2)-en, 表示"使成為，引起，使有” quicken, weaken, soften, harden
3)-fy, 表示"使……化, 使成”beautify, purify, intensify, signify, simplify
4)-ish, 表示"使，令” finish, abolish, diminish, establish
5)-ate, 表示“成為……，處理，作用” separate, operate, indicate
4. 副詞後綴
(形容詞)-ly：bad→badly壞地/惡劣地，careful→carefully小心地
-wise(oe)：clock→clockwise(a./adv.)順時針方向的(地)；like→likewise同樣地
-wards：out→outwards向外面地，north→northwards向北方地