runA.一般用在句子里且是作为名词来使用,跑步可以用Running.如:1)Like with walking and running. 就像走路和跑步一样。
2)Are you running? 你在跑步吗?3)Remember to stretch before you go running. 跑步之前要记得做伸展运动。B.如果是作为动词来讲,可以用run如:1)Tramcars run through the streets of the city. 有轨电车行驶于这座城市的大街上。
2)Once there, you can run over him. 然后您可以从他头上跑过去。