Verbseoul.
ㅎ irregular
그러다geureodato do so

To say to do so politely in the present tense, use 그래요 (geu-rae-yoh). Below is the full conjugation of 그러다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
그래
geu-rae
그래요
geu-rae-yoh
그럽니다
geu-ruhm-nee-dah
Past
그랬어
geu-rae-ssuh
그랬어요
geu-rae-ssuh-yoh
그랬습니다
geu-rae-sseum-nee-dah
Future
그럴 거야
geu-ruhl- -guh-yah
그럴 거예요
geu-ruhl- -guh-yae-yoh
그럴 겁니다
geu-ruhl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
그러세요
geu-ruh-sae-yoh
Suggestion / Let's Polite (요)
그래요
geu-rae-yoh
Question Polite (요)
그래요?
geu-rae-yoh-?
Connective “and” — (고)
그러고
geu-ruh-goh
Conditional “if” — (면)
그러면
geu-ruh-myuhn
Noun form — (기)
그럼
geu-ruhm