Verbseoul.
하다 verb

통하다 conjugation (tonghada, to pass through, from one end to the other)

To say to pass through, from one end to the other politely in the present tense, use 통해요 (tohng-hae-yoh) · tonghaeyo. Below is the full conjugation of 통하다 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

TenseCasual (반말)Polite (요)Formal (합니다)
Present
통해
tohng-hae
tonghae
통해요
tohng-hae-yoh
tonghaeyo
통합니다
tohng-hahm-nee-dah
tonghamnida
Past
통했어
tohng-hae-ssuh
tonghaesseo
통했어요
tohng-hae-ssuh-yoh
tonghaesseoyo
통했습니다
tohng-hae-sseum-nee-dah
tonghaesseumnida
Future
통할 거야
tohng-hahl guh-yah
tonghal geoya
통할 거예요
tohng-hahl guh-yae-yoh
tonghal geoyeyo
통할 겁니다
tohng-hahl guhm-nee-dah
tonghal geomnida

Other useful forms

Honorific / Command Polite (-(으)세요)
통하세요
tohng-hah-sae-yoh
tonghaseyo
Suggestion / Let's Polite (요)
통해요
tohng-hae-yoh
tonghaeyo
Question Polite (요)
통해요?
tohng-hae-yoh-?
tonghaeyo?
Connective "and" — (고)
통하고
tohng-hah-goh
tonghago
Conditional "if" — (면)
통하면
tohng-hah-myuhn
tonghamyeon
Progressive (고 있어요)
통하고 있어요
tohng-hah-goh ee-ssuh-yoh
tonghago isseoyo
Want to (고 싶어요)
통하고 싶어요
tohng-hah-goh shee-puh-yoh
tonghago sipeoyo
Can / Able to ((으)ㄹ 수 있어요)
통할 수 있어요
tohng-hahl soo ee-ssuh-yoh
tonghal su isseoyo
Because / So (아/어서)
통해서
tohng-hae-suh
tonghaeseo
Noun form — (기)
통하기
tohng-hah-gee
tonghagi
Noun form — (음)
통함
tohng-hahm
tongham