s being ahead of time or need
r ahead of time; in anticipation
adv. 预先
1. I like to prepare my meals beforehand to save time.
我喜欢提前准备我的饭菜以节省时间。
2. Please let me know beforehand if you can't attend the meeting.
如果你不能参加会议,请提前告诉我。
3. She always plans her trips beforehand to avoid any surprises.
她总是提前计划她的旅行,以避免任何意外。