I'm sorry if I post things that are very basic but I'm quite stubborn and I'd rather ask you all. So, my question of the day is: What's the past form of the verb 하다 ? In my book it is said that 하다 in its past form is 하였다 but I know that the past is made by the panmal form of the verb+ㅆ and I know that the panmal form of the verbs that end in 하 is 해, so shouldn't the past form be 했다? Which of the forms above is correct? 하였다 or 했다? Thank you all for your explanation and kindness, I'm just a beginner!