earlier; before something else happens or is done 预先；事先 two weeks/three days/a few hours beforehand 提前两星期／三天／几小时 I wish we'd known about it beforehand. 要是我们预先知道这事就好了。 🔊🔊 He warned me beforehand what to expect. 他预先提醒过我这件事。
Oxford Collocations DictionaryBeforehand is used with these verbs:- know
Word OriginMiddle English (originally as two words): from before + hand; probably influenced by Old French avant main.