题目内容：

过去式：jump

优质解答

jumped v.跳跃（jump的过去式过去分词）jump [dʒʌmp] vi.1.跳,跃；跳跃；弹跳：He jumped with joy when he heard the good news.当他听到这一好消息时高兴得跳了起来.How high can you jump?你能跳多高?2...