修改发给外国老师的短信

Dear Ms.Pence,

My name is Yu RongBing, one of the students in your Grammar class. I had been to your class on January 22th. I would like so much to join you for your class. I hope I have left an impression on you. However I am not able to go to school on time because I need to go back to China to bring my son here. I may be absent for three classes. I am so sorry for that.

Hi,Miss Pence.My name is Yu,Rongbing,your student.I went to take your class on January 22th,I try to take your class,Do you remmember me?But I can't go to school on time . I need to go to China to pick up my son.May I will be absent for three class.I feel so sorry for that！