五年级下册动词原形及其过去式不规则变化:go-went(去)meet-met(碰上,遇见)see-saw(看见)is-was(主语是单数:是)are-were(主语是复数:是)come-came(来)run-ran(跑)do-did(助动词;做)have-had(有,吃)lose-lost(丢失)buy-bought(买)take-took(拿走)eat-ate(吃)drink-drank(喝)swim-swam(游泳)find-found(发现)ring-rang(响)win-won(赢)tell-told(告诉)规则变化:visit-visited(参观)jump-jumped(跳)watch-watched(看)wash-washed(洗)play-played(玩)skip-skipped(跳绳)drop-dropped(掉落)arrive-arrived(到达)live-lived(居住)