Ahh thanks that makes sense, I assumed that it might just be “whatever the context is” so if someone asked “who was with you” and you say” 一人でした” its assumed you are saying “I was alone” not ” not “It was one person” (although technically true I suppose)

• This reply was modified 12 years, 2 months ago by  Okanehira.
• This reply was modified 12 years, 2 months ago by  Okanehira.