When I want to express one of the series in harry potter, which one is better? ex) Third episode is my favorite among whole series.
Third episode/ episode three
Are all of them can be used? If not, what is the problem with them?
One more question... In a subway linemap, what is the exact way to express line?
line one = the most common used first line (is it also possible?/ then how about line first?)
I want someone to distinguish their differences as I don't have intuition.