fall over 意外地從…上跌落, 掉下來The car fell over a cliff and the driver was drowned.汽車從懸崖上翻下來, 司機溺水而亡。被…絆倒He fell over a rock in his path.他在小路上被一塊石頭絆倒了。迫不及待做某事Mother fell over herself to get the party ready.母親急切地為聚會做準備。落在…之外The ball fell over the line.球落在線外。fall across橫在…上A big tree fell right across the road.一棵大樹倒下, 正好橫在路上。遇到I happened to fall across her the next day in the park.第二天我在公園里偶然遇到她。