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五、名词→动词 advice→advise food→feed life→live sale→sell 六、形容词→名词 1.形容词+ -er foreign→foreigner own→owner strange→stranger 2.形容词+ -ness fair→fairness happy→happiness ill→illness sad→sadness 3.形容词+ -ty difficult→difficulty safe→safety active→activity 4.形容词-t改为-ce different→difference important→importance independent→independence silent→silence 5.形容词+ -th true→truth dead→death warm→warmth 6.特例 able→ability popular→popularity pride→proud safe→save （to be continued） |
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