"The bear eats the black pencil."
Translation:곰은 검정색 연필을 먹습니다.
Well spotted. The Korean language seems to be richer when it comes to the adjective yet showing less diversity when it comes to the noun in comparison with languages such as English.
No one knows why for certain. My theories to explain such phenomena:
1) Although Korean peninsular is not grandly big, about 60% consists of mountainous areas meaning preservation of local expressions was relatively easy just like Switzerland and the Basque region of Spain.
2) Korean also had a class system similar to the Indian Caste system meaning languages used by the ruling class was not the same as the one spoken by the working class and others.
3) Just like Britain, Korea used to be divided and ruled by 3different kingdoms for long. When Korea was unified by Silla, which is Korean equivalent of England for Britain, am certain the victors' highest priority was not harmonizing different expressions used in different kingdoms.
I do not understand 1) why 먹어요 is not aceepted. Is this sentence wrong with this level of formality. If yes, can duolingo explain the grammar here? 2) why 곰이 is not accepted. As far as I understood there is no context in the english sentences which say it HAS to be 는? 3) why is 검은 not accepted? according to Duolingo's own tips ( https://www.duolingo.com/skill/ko/Colors/tips-and-notes ) the modifier form should be accepted? if I understood this wrong, I'd appreciated duolingo team to explain why it is wrong.