고 나서 grammar express a sequence of two actions. ‘고 나서’ attaches after a verb stem it is a clausal connective. It has after this happen/ after this kind of meaning. It is used when one action is finished or completed and another action is started.
When the first action is finished and then do the next action in the sequence. In case you want to join or connect two actions/ sentences in one sentence ‘고 나서’ is used. For example-
고 나서 VS (으)ㄴ 후에
고 나서 and (으)ㄴ 후에 are almost similar in meaning. They are not different. Both 고 나서 and (으)ㄴ 후에 means to ‘do (something) after’, ‘upon finishing’ ‘and then’ in English
수업 끝난 후에 뭐 할 거예요? What will you do after the class?
수업 끝나고 나서 뭐 할 거예요? What will you do after the class?
우리 영화를 보고 나서 치킨을 먹어요. Let’s go to eat chicken after watching a movie.
‘보고 나서’ is a combination of the verb ‘보다’ and ‘고 나서’.
고 나서 grammar conjugation
고 나서 is attached after the verb stem. ‘고 나서’ is used whether that verb stem has the final consonant or not. For example, verb 풀다 (to solve) has the final consonant ㄹ, remove ‘다’. which is the consonant. Then ‘고 나서’ is used. So it becomes ‘풀고 나서’.
The verb 보다 (to watch) does not have the final consonant. Remove ‘다’. There is no final consonant. Then ‘고 나서’ is used. So it becomes ‘ 보고 나서’.
‘끝내고 나서’ is the result of a combination of the verb ‘끝내다 (to finish/complete) and ‘고 나서.’
샤워 하고 나서 했어요. is the result of a combination of the verb 샤워 하다 and 고 나서.
You can just sit back and relax. 넌 그냥 앉고 나서 쉴 수 있어.
고 나서 example
먹다 – 먹고 나서
낫다 – 낫고 나서
씻다 – 씻고 나서
듣다 – 듣고 나서
가다 – 가고 나서
나서 can be omitted and the meaning of the sentence remains the same. The inclusion of -나서 means that the first event has been completed. For example –
일하고 나서 쉬세요 = 일하고 쉬세요. Please take a rest after finishing work.