It is my last lesson today.
今天我在ichina上了最后一课。
Since I enjoyed teaching in iChina for the past one year, I promise I will be back if I get the chance one day.
在过去的一年，我在这里工作的很开心，我希望将来有机会，我还可以再回来。
However, I have to quit for preparing for my future career in US.
但是，现在我不得不离开为自己将来在美国的事情做准备了。
Dear friends, it is time to say goodbye.
亲爱的朋友们，到了该说再见的时候了。
See you next time.
也许下次还可以再见吧。
Please study chinese hard and happily, I will miss you. Perhaps we can chat with chinese one day.
请开心努力的学习汉语吧，我会想念你们的。也许在将来的某一天，我们可以用汉语聊天。
Good Luck!
祝大家都好运！