acest student = studentul acesta Acest student scrie o carte = This student is writing a book. Studentul acesta scrie o carte = This student is writing a book. (I used both,the meaning of the sentence is the same.The difference is that one uses the definite article.) * Search for the usage of definite articles in Romanian! copil - copilul : child - the child om - omul : man - the man carte - cartea : book - the book vampir - vampirul : vampire - the vampire