beforehand
柯林斯词典
1. ADV If you do something beforehand, you do it earlier than a particular event. 事先; 预先
How could she tell beforehand that I was going to go out?
她如何预先知道我将出门的？
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beforehand /bɪˈfɔːˌhænd/
剑桥词典
- earlier (than a particular time )
事先，预先
I knew she was coming that afternoon because she had phoned beforehand to say so. 我知道她那天下午要来，因为她事先打电话跟我说过。 返回 beforehand