～てもらうTo get someone to do, To have someone do

Both use the て form to talk about favors, but with different perspectives. てあげる focuses on the giver (you or someone close to you) doing something for someone else. てもらう focuses on the receiver having something done for them. For example, ケンに教えてあげた ('I taught/told Ken.') vs. ケンに教えてもらった ('Ken taught me.').

もらう significa 'recibir', y se usa cuando el hablante o a una persona de su grupo recibe algo de alguien externo al grupo. Por ejemplo, プレゼントをもらった significa 'recibí un regalo'. Cuando se usa como parte de la construcción てもらう, agregándolo a un verbo en la forma て, significa que el hablante ha hecho que alguien haga algo en su favor, como en 日本語を教えてもらった ('Hice que alguien me hiciera el favor de enseñarme japonés').

Both express receiving a favor, but from different perspectives. With てくれる, the subject is the giver and they do something for you. With てもらう, the subject is the receiver and they get someone to do something. For example, ケンが教えてくれた frames the action as 'Ken taught/told me.', while ケンに教えてもらった frames it as 'I had Ken teach/tell me.'.

てもらう describes getting someone to do something for you, e.g. 教えてもらった ('I had them teach/tell me.'). ていただけませんか is a polite way to ask for such a favor, as in 教えていただけませんか？ ('Would you kindly teach/tell me?'). Both involve receiving help but differ in politeness and usage.