相关单词同义词avant, previously, ago, formerly, prior, back, until, 近义词adv. ago, ahead反义词prep.after, behindadv.after临近词beforehand, befit, beforeness, beforetime, before now, before all, before tax, before day, before skip, before this, before noon, before hand相似词beetling, beetroot, befall, befit, before (very/too) long idiom, before the Flood idiom, before you can say Jack Robinson idiom, before you know it idiom, 返回 before