run的过去式是ran、run，过去分词是ran、run，第三人称单数现在时是runs，现在分词是running、run。
例句：1、I excused myself and ran back to the telephone.我说了声抱歉，跑回到电话机旁。
2、The owner insisted on Cool Ground running in the Gold Cup.主人坚持要让“酷地”参加金杯赛马会。
3、The hallway ran the length of the villa.走廊贯穿了整个别墅。
4、Our host ran a long extension cord out from the house and set up a screen and a projector.我们的主人从房里牵出一根延长电线，架起屏幕和投影仪。
5、He laughed and ran his fingers through his hair.他笑了，用手指拢了拢他的头发。
