To oblige someone means to be helpful to them by doing what they have asked you to do.
(通过满足要求而) 帮助 Mr. Oakley has always been ready to oblige journalists with information. 奥克利先生一直乐于提供信息帮助记者们。
| be / feel obliged to do强调责任、义务 | Many parents feel obliged to pay for at least part of the wedding. |
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| be / feel compelled to do 迫于外界的压力 | President Nixon felt compelled to resign. |
| be/ feel impelled to do 内心的动力 | He felt impelled to point out that they were making a dangerous mistake. |