Question

beforehand adv.事先，预先;提前;adj.提前的;预先准备好的;

Accepted Answer

英[bɪˈfɔ:hænd]  美[bɪˈfɔrhænd] ADV预先；事先；提前If you do something beforehand, you do it earlier than a particular event.例：How could she tell beforehand that I was going to go out?...她怎么会事先知道我要出去？例：Saunas can be hazardous if misused. Avoid a big meal beforehand.洗桑拿浴如果方法不当会有危险，浴前切忌饱食。

单词	beforehand
音标	英[bɪˈfɔ:hænd] 美[bɪˈfɔrhænd]
解释	adv.事先，预先;提前;adj.提前的;预先准备好的;
例句	ADV 预先；事先；提前 If you do something beforehand, you do it earlier than a particular event. 例：How could she tell beforehand that I was going to go out?...她怎么会事先知道我要出去？例：Saunas can be hazardous if misused. Avoid a big meal beforehand.洗桑拿浴如果方法不当会有危险，浴前切忌饱食。
变形

英[Bɪˈfɔ:Hænd 美[Bɪˈfɔrhænd Adv.事先，预先;提前;Adj.提前的;预先准备好的 Adv 预先；事先；提前 Earlier Event 例：How