adv.预先，事先

You must have some preparation beforehand.
你必须事先做些准备。
We need to make an accurate estimate beforehand.
我们需要事先作出准确的估计。
Get everything ready beforehand.
事前将每一切事都准备好。
I booked the restaurant beforehand to avoid any disappointment.
我提前预订了餐厅，以免到时候失望。
It's advisable to study the material beforehand for the exam.
为了考试，最好事先学习材料。
Could you please send me the agenda beforehand?
你能提前把议程发给我吗？
We need to prepare for the meeting beforehand to ensure its success.
我们需要事先准备会议以确保成功。
Make sure to pack your luggage beforehand to avoid rush in the morning.
确保提前打包行李，以免早晨匆忙。
The guests were informed of the dress code beforehand.
客人们已经提前被告知了着装要求。
She rehearsed her speech beforehand to gain confidence.
她事先排练了演讲以增强信心。
The tickets for the concert sold out beforehand.
音乐会的票早就售罄了。
It's better to have a plan beforehand when going on a trip.
出门旅行时，最好提前有个计划。
The participants were asked to submit their questions beforehand.
参与者被要求提前提交问题。