Yamadasan ga okoshi ni narimashita
“Sonkei-form” is one of the three main types of honorific language in Japanese. It is specifically used to show respect when describing the actions of those in higher positions, such as superiors, elders, or people outside of your close group (soto).
This form is never used for your own actions, your friends’ actions, or the actions of people within your “uchi” (inside your group, such as family members or close colleagues). It is exclusively reserved for talking about the actions of someone who is considered above you in status, rank, or age.”
Here are some types of forms to make “sonkei-form”.
Type 1: Different verbs from normal verbs
iu (say, tell, speak) >>> ossharu
taberu (eat) >>> meshiagaru
suru (do) >>> nasaru
iru (exist) >>> irassharu
miru (see, watch, look) >>> goran ni naru
kuru (come) >>> okoshi ni naru, irassharu
Type 2: Normal verbs change into honorific forms
“o” or “go” + normal verb + ni naru
yasumu (take a rest) >>> oyasumininaru
nayamu (worry) >>> onayamininaru
taberu >>> otabeninaru
kaku >>> okakininaru
Type 3: Using passive forms to express honorific
kaku >>> kakareru
sagasu >>> sagasareru
suru >>> sareru
Expression
Yamadasan ga okoshi ni narimashita. (Mr. Yamada came or arrived.)
Shachou wa yoku ocha o onomininarimasu. (The company president often drink tea.)
Osagashininatte ita shorui wa jimusho ni arimashita. (The document you were finding was in the office.)
Yamadasan ga okoshininaru made machimasu. (I will wait until Mr. Yamada comes.)
Tanakasan ga izen kakareta shousetsu wa totemo yokattadesu. (The novel Mr. Tanaka wrote before was very good.)