雙音節詞:
如:clever→cleverer→cleverest narrow→narrower→narrowest.
2、以不發音e結尾的`單音節詞,比較在原級后加-r,最高級在原級后加-st;
如:large→larger→largest nice→nicer→nicest able→abler→ablest.
3、在重讀閉音節(即:輔音+元音+輔音)中,先雙寫末尾的輔音字母,比較級加-er,最高級加-est;
如:big→bigger→biggest hot→hotter→hottest fat→fatter→fattest.
4、以“輔音字母+y”結尾的雙音節詞, 把y改為i,比較級加-er,最高級加-est;
如:easy→easier→easiest heavy→heavier→heaviest.
busy→busier→busiest happy→happier→happiest.