across, cross, through, over. Across 和 through 作为介词都有“穿过”的意用法有所不同 思， Across 表示在某物体的表面上横向通过，后面接 street, bridge, desert, road 等词。 She swan across the channel. Though 表示动作是在某物体的空间通过，后面接 gate, forest, window, vally, desert 等词。 The train went though a tunnel. Cross 动词。“穿过”。 They crossed the river on rafts. Over 介词。 指“越过”高的障碍物。 He was already over the gate waiting for meto climb over. Past 介火车穿过隧道。 他们乘筏渡过河去。 词。 表示从旁边“经过”，相当于 by. It was past midnight when we got home. 本文来源：https://www.wddqw.com/doc/0a8df1f6d2d233d4b14e852458fb770bf78a3bc6.html