사용해
sah-yohng-hae
sayonghae
사용하다
To say to use politely in the present tense, use 사용해요 (sah-yohng-hae-yoh) · sayonghaeyo. Below is the full conjugation of 사용하다 across the three tenses and three everyday speech levels.
Grammar note (하다 verb): 하다 verbs are formed with a Sino-Korean noun + 하다 (e.g. 공부하다 = study + do). 하다 conjugates irregularly: the ㅏ in 하 contracts with the -아/-어 suffix to give 해 (not *하어). Present polite: 해요; past polite: 했어요. The formal ending is 합니다 (not *하습니다). Most noun+하다 compounds follow this pattern uniformly. See all 하다 verbs →
Conjugation table
pron. = pronunciation guide · RR = Revised Romanization
Highlighted = where the stem changes
| Tense | Casual (반말) | Polite (요) | Formal (합니다) |
|---|---|---|---|
| Present | 사용해요 sah-yohng-hae-yoh sayonghaeyo | 사용합니다 sah-yohng-hahm-nee-dah sayonghamnida | |
| Past | 사용했어 sah-yohng-hae-ssuh sayonghaesseo | 사용했어요 sah-yohng-hae-ssuh-yoh sayonghaesseoyo | 사용했습니다 sah-yohng-hae-sseum-nee-dah sayonghaesseumnida |
| Future | 사용할 거야 sah-yohng-hahl guh-yah sayonghal geoya | 사용할 거예요 sah-yohng-hahl guh-yae-yoh sayonghal geoyeyo | 사용할 겁니다 sah-yohng-hahl guhm-nee-dah sayonghal geomnida |
Other useful forms
Honorific / Command Polite (-(으)세요)
사용하세요
sah-yohng-hah-sae-yoh
sayonghaseyo
Suggestion / Let's Polite (요)
사용해요
sah-yohng-hae-yoh
sayonghaeyo
Question Polite (요)
사용해요?
sah-yohng-hae-yoh-?
sayonghaeyo?
Connective "and" — (고)
사용하고
sah-yohng-hah-goh
sayonghago
Conditional "if" — (면)
사용하면
sah-yohng-hah-myuhn
sayonghamyeon
Progressive (고 있어요)
사용하고 있어요
sah-yohng-hah-goh ee-ssuh-yoh
sayonghago isseoyo
Want to (고 싶어요)
사용하고 싶어요
sah-yohng-hah-goh shee-puh-yoh
sayonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
사용할 수 있어요
sah-yohng-hahl soo ee-ssuh-yoh
sayonghal su isseoyo
Because / So (아/어서)
사용해서
sah-yohng-hae-suh
sayonghaeseo
Noun form — (기)
사용하기
sah-yohng-hah-gee
sayonghagi
Noun form — (음)
사용함
sah-yohng-hahm
sayongham