求写一篇英文的感谢信,急,

题目

求写一篇英文的感谢信,急,
假如你将要作为访问学者在某大学一年的学习,写一封感谢信给主管教授（DR.Greene）表达你的感激之情

答案

Dear sir :I am very glad that you are my teacher,You are one of the best teachers who I know .there are many good points what we should learn from you,such as kindness,patience,humor and so on.please ...