用 「麻辣拼盛 Spelling」編號#16第2個拼字字群（er）及編號#20第2個拼字字群（est）練習〈er 比較級〉和〈est 最高級〉。
1. 通常直接在字尾加 er (比較級) / est (最高級)
fast faster fastest, narrow narrower narrowest, straight straighter straightest, tall taller tallest, small smaller smallest, smart smarter smartest, dark darker darkest, warm warmer warmest, fair fairer fairest, fresh fresher freshest, great greater greatest, quick quicker quickest, sick sicker sickest, thick thicker thickest, rich richer richest, deep deeper deepest, mean meaner meanest, clean cleaner cleanest, near nearer nearest, kind kinder kindest, high higher highest, light lighter lightest, bright brighter brightest, strong stronger strongest, old older oldest, cold colder coldest, low lower lowest, slow slower slowest, long longer longest, soft softer softest, short shorter shortest, loud louder loudest, round rounder roundest, soon sooner soonest, smooth smoother smoothest, poor poorer poorest, full fuller fullest, few fewer fewest, new newer newest
2. 形容詞字尾是e：只要加 r (*er 比較級) / st (*est 最高級)
large larger largest, nice nicer nicest, wide wider widest, wise wiser wisest
3. 一音節的形容詞，單一母音字母+一個子音字尾：重複子音字尾，再加 er (比較級) / est (最高級)
mad madder maddest, sad sadder saddest, big bigger biggest, hot hotter hottest
4. 形容詞字尾為y：把y改為i，再加 er (比較級) / est (最高級)
happy happier happiest, busy busier busiest, pretty prettier prettiest, healthy healthier healthiest, funny funnier funniest, lucky luckier luckiest, early earlier easiest
* 也請看「麻辣字母拼讀卡」（小卡及大卡）第19張第2個字母組合發音（er）及第26張第1個字母組合發音（est）
* 字尾加 er 也可以是: 做這個動作的人（或東西），見https://elephantcube.com/phonics-spelling-patterns-English-words/16-2-er.htm
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三個音節或三個音節以上，在形容詞前加 more (比較級) / most (最高級)
important -> more important -> most important
expensive -> more expensive -> most expensive
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不規則變化
good -> better -> best
bad -> worse -> worst
little -> less -> least
much -> more -> most
far -> further/farther -> furthest/farthest
* less 和 lesser 都是比較級，用法可查字典。
