速度,很简单的,buy,send,lend,be,go,fly,sit,teach,read,understand,thi...答:以下按动词原形,过去式,过去分词顺序排列:buy: bought, bought send: sent, sent lend: lent, lent be: 过去分词:单数用was,复数用were, 过去分词都是been go: went, gone fly: flew, flown sit: sat, sat teach: taught, taught read: read, read注意虽然拼写相同,但读音不同 understand...