不规则动词表1.A-A-A型（无变化的动词）cut-cut-cutlet-let-lethit-hit-hitput-put-putcost-cost-costhurt-hurt-hurtread/rid/-readred-readred2.A-A-B型（现在式和过去式同形）beat-beat-beaten3.A-B-A型（现在式和过去分词同形）come-came-comebecome-became-becomerun-ran-run4.A-B-B型（动词的过去式与过去分词相同）（1）词尾的“d”变为“t”或词尾是“n”加“t”build-built-builtlend-lent-lentsend-sent-sentspend-spent-spentburn-burnt/burned-burnt/burnedlearn-learnt/learned-learnt/learnedmean-meant-meant（2）把原形变为aught及ough
