"She is a person."
My translation of this sentence was: "Elle est une personne." That was marked as wrong. Duolingo said the correct translation sould be: "C'est une personne." I'm confused - why was my translation wrong?
Thanks in advance.
I think Duolingo's right. http://www.frenchtoday.com/blog/cest-versus-il-elle-est
Yes - il/elle + noun = c'est. Il/elle + adjective = il/elle est. So, since "she is a person" has a noun (person), you will use c'est une personne. Technically, it's not wrong to use "elle est une personne" but it's basically only used in formal writing, not in conversation.