these verbs are present tense. in korean, present tense form is '-ㅂ니다'. this form is literary form, so it is used in writing and military. before, you need to know that many korean verbs are made by "noun+verb '하다'." form. ex) 공부(noun)+하다(verb) = 공부하다 (to study) 입니다 = to be (이다+ㅂ니다) 저는 브라질 학생입니다 = I am brazilian student. 마십니다 = to drink (마시다+ㅂ니다) 저는 커피를 마십니다 = I drink coffee. 공부합니다. = to study (공부+하다+ㅂ니다) 저는 영어를 공부합니다. = I study english. in spoken, korean present tense form is '-(어/아)요'. in the beginning level, the exceptions of this form are that - first, '이다' become '이에요', second, '하다' become '해요'. (먹다) 먹습니다 = 먹어요 to eat (찾다) 찾습니다 = 찾아요 to find (가다) 갑니다 = 가요 to go (서다) 섭니다 = 서요 to stand (하다) 공부합니다 = 공부해요 to study (이다) 학생입니다 = 학생이에요 to be