across是介词 cross是动词
如 walk across the road(穿过道路)
或可以说 cross the road
介词前面要加动词
我也是初中的^^ 第一楼大大 您可能记错了
穿过:cross(动词) through,across(介词)
而穿越树林是:go through the forest
穿越马路才是cross或go across
补充:穿过窗户(等一切头上有框的)用through
翻译:如那只猫从窗户跳进来 The cat jump through the window