Breakdown of doseogwan gyujeongeul ilgeoya haeyo.
읽다ilgda
to read
~을~eul
object particle
도서관doseogwan
library
~어야 하다~eoya hada
to have to
Questions & Answers about doseogwan gyujeongeul ilgeoya haeyo.
What grammar is being used to express “have to” in 읽어야 해요?
It’s V-아/어야 하다: verb stem + 아/어야 + 하다. So 읽- + 어야 + 하다 → polite form 읽어야 해요. It expresses necessity/obligation.
Why is it 읽어야, not 읽아야?
Use -아 only when the stem’s vowel is ㅏ/ㅗ. The stem 읽- has ㅣ, so you use -어야 → 읽어야.
Can I say 읽어야 돼요 instead of 읽어야 해요?
Yes. V-아/어야 돼요 and V-아/어야 해요 both mean “must/have to.” Many speakers prefer …돼요 in conversation. Some feel …해요 is a bit more personal/subject-driven and …돼요 more situational, but in practice they’re interchangeable.
How do I make this more formal or more casual?
- More formal/polite: 읽어야 합니다.
- Honorific (respecting the subject): 읽으셔야 합니다/해요.
- Casual: 읽어야 해. / 읽어야 돼.
How do I turn it into a question like “Do I have to read the library rules?”