Question

존은 커피를 마저 마시고 나갔어요 As a sequential connective meaning 'and (then)', -고 links two clauses describing actions that take place sequentially. In such usage, -고 normally occurs by itself without the past tense marker.One possible situation for -고 to appear affixed by the past tense marker is when talking about two sequential past events separated from each other by a significant amount of time. In such cases, the first clause often leads to the possibility of the second clause to take place.

Accepted Answer

John finished his coffee and went out

Front	존은 커피를 마저 마시고 나갔어요
Back	John finished his coffee and went out
Notes	As a sequential connective meaning 'and (then)', -고 links two clauses describing actions that take place sequentially. In such usage, -고 normally occurs by itself without the past tense marker. One possible situation for -고 to appear affixed by the past tense marker is when talking about two sequential past events separated from each other by a significant amount of time. In such cases, the first clause often leads to the possibility of the second clause to take place.

고 Past Sequential Tense Clause 존은 커피를 마저