"A son will send a letter to the dad."

Translation: 아들은 아빠에게 편지를 보내줄 거야.

[Donlvaro]

What's the difference between 보낼 and 보내줄

[Pamela909830]

Many times 주다 is combined with other verbs to make a "compound verb." 주다 means "to give," but it also means "to do something for someone else's benefit."

[lynn509970]

편지를 아빠에게 순서달라고 되는데요

[Andro0]

아들은 아빠에게 편지를 보내줄 거예요

[Alma_Tadema]

Why not 아버지한테?