The translation of certain verbs of change into German like to turn, to get and to become is not easy. For repetition please check the chapter about werden und sein.

Exercise         I don't know why has turned into a person this strange.   He became very upset when I told him that I couldn't come.   He pretended to be poor but in the end it turned out that he was a millionaire.   His parents wanted him to be a doctor, but he became a painter.   He always wanted to be famous; in the end he became famous by robbing a bank.