obliged

有义务的、不得不、必须

I felt obliged to help my neighbor move the furniture.

我觉得有义务帮邻居搬家具。

感激的、感谢的正式

I would be much obliged if you could reply by Friday.

若您能在周五前回复，我将十分感谢。

被迫、迫使常用被动

Heavy snow obliged us to cancel the whole trip.

大雪迫使我们取消整趟旅行。

帮忙、答应、照办

The fans wanted another song, and the singer happily obliged.

歌迷想再听一首，歌手很乐意答应。