Questions & Answers about Tu nu vorbești româna bine.
Why is the ending '-ești' used in vorbești?
Why does the word româna end in '-a' instead of '-ă'?
When referring to a language in a general sense, Romanian attaches 'the' to the end of the word. The base word is română (Romanian), and adding the feminine definite article -a replaces the -ă, making it româna (literally 'the Romanian').
Where did the 'do' go from 'You do not speak'?