[T usually passive] if you are obliged to do something, you have to do it because the situation, the law, a duty etc makes it necessary

〔因形势、法律、义务等关系而〕非做…不可，迫使:

The minister was obliged to report at least once every six months.

这位大臣必须至少每六个月作一次汇报。

Circumstances had obliged him to sell the business.

情况迫使他把公司卖了。

Many parents feel obliged to pay for at least part of the wedding.

许多做父母的都觉得有责任至少为婚礼支付部分费用。

No one can force (NOT oblige) you to stay in a job that you hate.

没有人能够让你继续做你不喜欢的工作。

[I,T] to do something that someone has asked you to do

帮忙; 答应〔某人〕的请求:

It's always a good idea to oblige important clients.

答应重要客户的要求总是不会错的。

If you need a ride home, I'd be happy to oblige.

如果你需要搭便车回家，我很乐意效劳。

I'd be obliged if, [spoken formal] used to make a polite request

如蒙…我将非常感激〔请别人帮忙时的客气话〕:

I'd be obliged if you'd treat this matter as strictly confidential.

此事如你能严格保密，我将非常感激。

(I'm) much obliged (to you), [spoken old-fashioned] used to thank someone very politely

（我对你）非常感谢，不胜感激〔用于礼貌地向某人致谢〕