Verbseoul.
하다 verb
고생하다gosaenghadato have a hard time, to go through hardship

To say to have a hard time, to go through hardship politely in the present tense, use 고생해요 (goh-saeng-hae-yoh). Below is the full conjugation of 고생하다 across the three tenses and three everyday speech levels.

Conjugation table

TenseCasual (반말)Polite (요)Formal (합니다)
Present
고생해
goh-saeng-hae
고생해요
goh-saeng-hae-yoh
고생합니다
goh-saeng-hahm-nee-dah
Past
고생했어
goh-saeng-hae-ssuh
고생했어요
goh-saeng-hae-ssuh-yoh
고생했습니다
goh-saeng-hae-sseum-nee-dah
Future
고생할 거야
goh-saeng-hahl- -guh-yah
고생할 거예요
goh-saeng-hahl- -guh-yae-yoh
고생할 겁니다
goh-saeng-hahl- -guhm-nee-dah

Other useful forms

Command Polite (세요)
고생하세요
goh-saeng-hah-sae-yoh
Suggestion / Let's Polite (요)
고생해요
goh-saeng-hae-yoh
Question Polite (요)
고생해요?
goh-saeng-hae-yoh-?
Connective “and” — (고)
고생하고
goh-saeng-hah-goh
Conditional “if” — (면)
고생하면
goh-saeng-hah-myuhn
Noun form — (기)
고생함
goh-saeng-hahm