Tones: some refining activities?
Click here to go to a website (Professor Wenze Hu at Harvard University) and sharpen your ears for Chinese tones.
Practicing your productive skills. As you listen repeat after the native speaker by imitating their tones. You can talk to yourself, to your friends, best of all, to Guo Laoshi and Bai Laoshi who have very sharp years for Chinese tones.