After he had studied all the maps of the city, the man made a new one. 这是一种改法,还有另一种哦 After having studied all the maps of the city, the man made a new one.
After he had studied all the maps of the city, the man made a new one. After having studied all the maps of the city, the man made a new one. Before he made a new one, the man had studied all the maps of the city.