Translation:You have too many books on the bookshelf.
I did the same thing. I think "shelf" should be accepted. Check out examples lower down on this page: http://www.spanishdict.com/translate/estanter%C3%ADa
I'm also a native English speaker. I wrote shelf, even while understanding that un estante is a single shelf and una estantería is a unit containing multiple shelves. To me, it's valid English to shorten bookshelf to shelf. (I also work in a library and we talk about books and their location nonstop.)
By definition, a shelf is one horizontal board attached to a wall, and "shelves" are a number of boards attached to a wall. Thus, a "bookshelf" is a shelf that a person puts his or her books "on." If say that you put your books "in" a wooden shelf, you are saying that your books are embedded in the wood. (Of course, it goes without saying that shelves can be made of other materials besides wood.) The correct preposition to use when speaking of "bookshelves" is usually "on/on top of/sobre."
Bookshelves and bookcases both can be built in, but only bookcases can be stand-alone pieces of furniture that, by definition, must have tops, sides, and bottoms, with backs being optional. Sometimes, people take freestanding bookcases and mount them on the wall with brackets. Whether a bookcase is freestanding or mounted you put a book "into" a bookcase because bookcases have a top and sides. With the word "bookcase," the correct prepositions to use are "in/into/within/inside/adentro/dentro."
Agree. I can't say that I have heard people say they have books 'in' a bookSHELF. I would say, and mostly that I can recall hear people say, 'on' a bookshelf. The same that something is on a shelf not in it. Yes, in theory you could say it, but conversationally I don't hear that.
That's because "estantería " refers to a piece of furniture that contains shelves. It's really not a single shelf. In English, I suppose some people refer to a bookcase or shelving as a bookshelf, but a bookshelf still sounds like a single shelf to me. In any case, the Spanish word is not used to describe a single shelf.
NOUN 1. (storage space) a. el estante You have a shelf full of dolls. - Tienes un estante lleno de muñecas. You will find the book on the shelf. - Encontrarás el libro en el estante. b. la repisa My grandpa had shelves and shelves of tools in his garage. - Mi abuelo tenía muchas repisas de herramientas en su garaje. c. la balda The cat knocked the vase off the shelf. - El gato tiró la jarra de la balda. 2. (geology) a. la plataforma There is an underwater shelf that extends some 85 miles from the coast. - Hay una plataforma submarina que se extiende unas 85 millas de la costa.
"You have too many books in the bookshelf." marked as wrong.
Duolingo, please stop trying to teach me English, and teach em Spanish instead. If I set something on top of a low bookcase, I would use 'on'. However, if I'm talking about the whole item as a container for books, I would say that there are lots of books in the bookcase.
Tienes demasiados libros en la estantería.
My translation "You have too many books on the shelf." was marked incorrect because: You used the singular "shelf" here, instead of the plural "shelves". However, the correct solution offered is also in the singular!! "You have too many books on the bookshelf."