Forms of verbs Hi, please refer to the picture in this website: http://imgur.com/aGDmegY It's a list of conjugation of the verb 하다 I found on a French website. I have a few questions and I've numbered them in the picture as well. Any help is much appreciated! 1) What is the significance of adding -는가 [하는가(요)] in the Present Indicative Interrogative form? How does this differ from the normal 해요? ending? 2) What is the significance of adding -구나/군요? What does this mean? 3) What is the significance of adding -는데(요) and ending it with a full stop/period? I thought it was used as a conjunction between two clauses. 4) What is the meaning of the -더라, -더냐, -던가, -던지, -더구/-더군, -던데? Basically, what does adding 더/던 mean? 5) How does adding 랴/리라 differ from something like 하라 or 하자?6) What does adding ㄹ까(요)? mean? 7) What is the significance of -지/죠? Does it mean something like "Isn't it so?" 8) What is the significance of adding -마? -ㄹ 게(요)? 9) What is the difference between adding -ㄴ and -는? I heard -ㄴ is used for past tense and -는 is used for present tense? 10) I'm not sure if this section refers to the -더/던 section above, but what does this mean? 11) What does adding -기 mean? 12) What does adding -다가 mean? Thank you so much, and sorry for the long list of questions!