go throug和go across都作”穿過，通過“之意時，區別就體現在through和across這兩個介詞上。
through和across都可表示“從（壹定範圍的）壹邊到另壹邊”；across表示某壹範圍的表面上橫向穿過，through表示在某壹範圍的內部空間縱向穿越。例如：
It took us two hours to go through the forest.穿過森林花了我們兩小時。
Do be careful while going across the street.橫穿街道時壹定要小心。
註意：go through還有如下意思：
經歷，經受
He was going through a very difficult time.
他在經歷壹段非常艱難的時期。
仔細檢查；查閱；通讀
Going through his list of customers is a massive job.
查閱他的客戶名單是壹項繁重的工作。
(法律、協議、決定) 獲得通過
The bill might have gone through if the economy was growing.
如果經濟保持增長的話，那個議案或許已經獲得通過了。