YOU SAID:

i understand why my dad left

INTO JAPANESE

私は父が去った理由を理解しています

BACK INTO ENGLISH

I understand why my father left

INTO JAPANESE

父が去った理由がわかります

BACK INTO ENGLISH

I can see why my father left

INTO JAPANESE

父が去った理由がわかります

BACK INTO ENGLISH

I can see why my father left