Definition
Before a specific time or event.
提早；事先
To ensure everything goes smoothly, I like to plan my trips ahead of time.
为了确保一切顺利，我喜欢提前计划我的旅行。
It's advisable to book your flight tickets ahead of time if you want the best seats.
如果你想获得最好的座位，建议你提前预订机票。
Please inform me ahead of time if you will be attending the meeting.
如果你要参加会议，请提前通知我。