~겠다 used to say something we will definitely do next. 하겠다 ---> 하겠습니다 ---> 하겠어요 = will (definitely) do 먹겠다 ---> 먹겠습니다 ---> 먹겠어요 = will (definitile) eat 마시겠다 ---> 마시겠습니다 ---> 마시겠어요 = will (definitely) drink etc. ~(ㄹ/을)게요 used to say something we will do, but there's no time information ㄹ게요 attached in a verb ends with vowel, and 을게요 attached in a verb ends with consonant 가다 ---> 갈게요 = will go 하다 ---> 할게요 = will do 먹다 ---> 먹을게요 = will eat 잡다 ---> 잡을게요 = will catch etc. 게 and 것 both used to point something. Formally, it's (이/그/저)것이 but it's simply (이/그/저)게 example: 이것이 뭐예요? ---> 이게 뭐예요? 그것이 가방이에요 ---> 그게 가방이에요