Dear sir :I am very glad that you are my teacher,You are one of the best teachers who I know here are many good points what we should learn from you,such as kindness,patience,humor and so please forgive me that I had made so many mistakes which make you always I really want to be a good Thanks for you teaching ,I have learn so many interesting things ,so many words,so many sentencesform you,Ican feel that it is not only a progress of learning,but also a convarcation of feeling 。 You are my teacher and good friend, We are the lucky dogs that we have such teacher as finally,I hope you happy everyday! best wishes your student人称替换一下就行