"My grandfather is at home."

Translation: 우리 할아버지께서 댁에 계세요.

[2poor4name]

Why is it 저희 and not 저의?

[seline88]

저희 is the honorific version of 우리. 저의 means my

[abanicoeningles]

why is it 할아버지 and not 할아버님?

[mybongza]

할아버지 is means grandfather. 할아버님 is Korean honorifics of 할아버지. You can use either of them

[Al-Asmawi]

The correct answer suggestion shows me "저희 할아버지께서는 댁에 계십니다." why is there 는 after 께서?

[JordanWesl7]

IWhat's the difference between 집 and 댁? Is one a Native Korean word and the other a Sino-Korean one?

[CGTokki]

they both mean house, 댁 is honorific

[Sakshi378257]

댁 is the honorific form of 집. Both mean house

[maknaewishes]

What does 계세요 mean? Like 있어요 but honorific?

[mhin1]

Correct. 계시다 is an honorific form of 있다.

[Shockeydoll]

What does 댁에 mean?

[Al-Asmawi]

Honorfic of 집에

[EllieCross2]

At the house/ at home