above/over/on词汇用法例句above“在上方”,不一定含有垂直在上的意思。反义词为:belowThe sun roseabovethe horizon.太阳升到了地平线以上。over“在上面”,含有垂直在上的意思There is a bridgeoverthe river.河上有座桥。on“在上面”,含有与表面相接触的意思There is an oil paintingonthe wall.墙上有一幅油画。across/through词汇用法例句across“横过,穿过”,指从的一边到另一边Be careful when you walkacrossthe road.当你过马路的时候要小心。through“穿过”,强调从内部穿过The river flowsthroughthe city from west to east.这条河从西到东流过城市。at all/ after all词 汇用法例句at all“全