Verbseoul.
하다 verb (adj)
능하다neunghadagood at

To say good at politely in the present tense, use 능해요 (neung-hae-yoh). Below is the full conjugation of 능하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
능해
neung-hae
능해요
neung-hae-yoh
능합니다
neung-hahm-nee-dah
Past
능했어
neung-hae-ssuh
능했어요
neung-hae-ssuh-yoh
능했습니다
neung-hae-sseum-nee-dah
Future
능할 거야
neung-hahl- -guh-yah
능할 거예요
neung-hahl- -guh-yae-yoh
능할 겁니다
neung-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
능하세요
neung-hah-sae-yoh
Suggestion / Let's Polite (요)
능해요
neung-hae-yoh
Question Polite (요)
능해요?
neung-hae-yoh-?
Connective “and” — (고)
능하고
neung-hah-goh
Conditional “if” — (면)
능하면
neung-hah-myuhn
Noun form — (기)
능함
neung-hahm