[영작] 어제 나는 아침 일찍 외근을 나갔다.

Yesterday, I worked outside in the early morning.

외근을 하다 

work outside of the office / be on outside duty

그는 지금 외근을 나갔다 

He's out on business[a job] right now.

외근의 

on outdoor service

그는 외근입니다 

He works outside.