Dear Madam Iris,

Thank you for being such a great teacher.

I really enjoyed being in your classes and becoming your friend. This skills and knowledge I gained in your classes surely helped me in my IELTS exam.  My English level was really improved by you as well as I understood the structure and special demands of this exam. Thus my score was even above the required.

Moreover, during my visit to Canada I had no communication problems with English speakers and felt very confident in an alien environment.

All this I could not have achieved without your wonderful teaching, patience and nice personality. Thanks a lot and hoping to stay in touch, 

Noor Zahid