A---A---A型以辅音字母t或d结尾readreadread读hithithit打cutcutcut割，切hurthurthurt伤costcostcost花费letletlet让putputput放下castcastcast投掷upsetupsetupset不安shutshutshut闭上setsetset落下spreadspreadspread传播splitsplitsplit劈开burstburstburst爆破突然A---B---B型大多数以t或d结尾构成过去式或过去分词（1）在原形后加t或d构成过去式和过去分词。burnburntburnt燃烧learnlearntlearnt学习leanleantleant斜靠m...
A---A---A型以辅音字母t或d结尾readreadread读hithithit打cutcutcut割，切hurthurthurt伤costcostcost花费letletlet让putputput放下castcastcast投掷upsetupsetupset不安shutshutshut闭上setsetset落下spreadspreadspread传播splitsplitsplit劈开burstburstburst爆破突然A---B---B型大多数以t或d结尾构成过去式或过去分词（1）在原形后加t或d构成过去式和过去分词。burnburntburnt燃烧learnlearntlearnt学习leanleantleant斜靠m...
