Please bring extra copies of the agenda in case more people join the meeting.

請多帶幾份議程影本，以防有更多人加入會議。

We ordered extra packaging materials, so the warehouse now has boxes we cannot use.

我們訂了過多的包裝材料，所以倉庫現在有用不完的箱子。

The hotel charged an extra fee because we stayed two hours past checkout time.

因為我們比退房時間晚了兩小時離開，飯店加收了額外費用。