.动词过去时& 过去分词表动词原形过去式过去分词be(am, is, are)was/ werebeen是bear b?bore b ?:born/borneb ?:n 负担 , 忍受do du:, du:did did done d ?n 做fly flai flew flu: flown fl ?un 飞go ?uwent went gone ?n去?ABA动词原形过去式过去分词come k ?m came keim come k?m 来run r?n ran r? n run r?n 跑?ABB ( 1 )在动词原形后加一个辅音字母d, t或 ed 构成过去式或过去分词。动词原形过去式hear hi ?heardh ?:d 过去分词heard h ?:d 听见learn