What about "the cards have no dates"? Not accepted! Is "card" quite incorrect?
From what I've read letra only means card in the sense of a playing card. Cartão means card like a credit card or a birthday card.
I would say both 'the letters have no dates' and 'the letters are not dated' should be accepted. As an english speaker I would generally say 'The letters aren't dated'
There's a corresponding sentence: "as cartas não são/estão datadas" (participle of "datar" - to date)
I'm trying to figure that out myself... I think this is it: Ela tem um carro. (Sing.) Eles têm um carro. (Plural) http://br.answers.yahoo.com/question/index?qid=20080209133105AAzNnjm
'Carta' also translates as 'map', and these may or may not have dates (maps do change over time, after all).
How about "the letters are undated", or does Duolingo really require me to be entirely literal in my translations?
why is there an "s" to "dates" if the letters do not have "dates" ? I mean, if there is no date, then there should not be a plural for there is 0 date... so why is it plural here ? doesn't make sense to me... Can anyone explain ?
If you expect the letter to have a single date (most likely the date it was written), you would use "no date".
If you expect the letter to contain a few dates in its text, perhaps describing events, then you would use "no dates".
Now, since we have more than one letter, we expect at least one date for each, so the plural version is fine.
"Zero" is the same as "not any" or "no" which takes on plural.
- I do not have a shoe
- I do not have any shoes
- I have zero shoes
- I have no shoes
- There are not any shoes here