through across cross pass past

pass 动词 Pass the crossing.
past 介词 GO past the crossing.
cross 动词 cross the river.
across 介词 go across the road.
through 介词 through the gate(空间概念,有倾向于从中间穿的概念)
past是个介词和副词，不能单独使用。而pass是个动词可以单独使用。

go past = pass