어머님이

mother

→ 어머님
phrase Rare #24,511
mother 어머님 is a respectful term for “mother,” and 이 marks her as the subject of the sentence.
KO: 어머님이 오늘 오세요.
EN: Your mother is coming today.

어머님이 돌아가셨어요

My mother-in-law passed away.

— 아메리카의 밤 (1973)

어머님이 저를 너무 좋게 보셨어요

She thought very highly of me.

— 동경 이야기 (1953)

톰은 어머님이 교통사고로 돌아가셨을 때 세 살 이었어.

Tom was three years old when his mother died in a car accident.