Grammar JLPT Level N4 - Lesson 20

Structure of お～になる:

お + Verb［ます］+ になる
ご⁽¹⁾ + ［する］Verb + になる
いく・くる・いる￫おいでになる

⁽¹⁾ お, limited to ［する］Verbs like: 電話(でんわ)する、勉強(べんきょう)する、散歩(さんぽ)する

Details about お～になる:

お～になる (or ご～になる) is an honorific language expression which is used to pay respect to the actions of the person that is being spoken to/another person (never the speaker). In this expression, になる is used in exactly the same way that する would be, except that it will be attached to the ます stem of the verb that it is referring to.

お客様(きゃくさま)がお見(み)えになるのは3時(じ)頃(ごろ)です。
The time that the customers will come will be around 3 o'clock.
皆様(みなさま)、お立ちになってください。
We request that everyone stand up.
この資料(しりょう)がご参考(さんこう)になれば幸(さいわ)いです。
It would bring me great happiness if this document could be a useful reference for you.
部長(ぶちょう)はどういう番組(ばんぐみ)をご覧(らん)になるのですか？
Boss, what kind of TV shows do you watch?

The primary difference between お and ご, is that お will be used with words/readings of Japanese origin (kun-yomi), and ご will be used with words/readings of Chinese origin (on-yomi). In fact, お and ご are both represented by the same kanji. For this kanji, 御(お) is one of the kun-yomi, and 御(ご) is one of the on-yomi.

お～になる