cross的用法及相关短语:(1)cross off--=cross out:划掉,勾销.[例句];This account in our books has been crossed out.我们帐册上的这笔帐已经勾销了.(2)cross over:从一边到另一边.[例句]:He has crossed over to t...cross是动词，across是介词。例如：我穿过马路。I cross the road.I go across the road.