Let's prepone our lunch to 11:30 AM.

让我们把午餐提前到上午11点半。

We need to prepone the meeting to 9 AM.

我们需要提前会议到上午9点。

Can we prepone the deadline to next Monday?

我们可以提前截止日期到下周一吗？

The doctor asked if we could prepone the appointment.

医生问我们是否可以提前预约。

They decided to prepone the event due to weather concerns.

由于天气原因，他们决定提前活动。