掌握英語詞匯的構詞法是短期迅速擴大雅思詞匯量的有效途徑之一，同時也是雅思閱讀當中詞匯題解題的“黃金法則”之一。以下為幾種構成形容詞的常用后綴，值得各位烤鴨學習并掌握。
　　n ful: useful, grateful
　　n -less: useless, careless
　　n -ish: childish, selfish
　　n -ive: active, destructive, collective
　　n -ous: famous, continuous, serious
　　n -able:, readable, acceptable, comfortable
　　n -ible: sensible, possible, responsible
　　n -ic: realistic, historic, energetic
　　n -ant: ignorant, significant, observant
　　n -ly: deeply, lively, daily, friendly
　　n -al: critical, accidental, continual,
　　n -y: handy, rainy, dirty, thirsty
　　n -ent: different, dependent, obedient
　　n -some: handsome, troublesome
　　n -en: golden, wooden
　　n -ed: talented, moneyed
　　n -ing: exciting, interesting
　　n -ate: fortunate, passionate, affectionate
　　n -an: European, Amerian