Dear Professor Liang,
I am writing to extend my gratitude to youbecause with your help I am now a student of Chemistry Department of SydneyUniversity.
Last June, when I applied to become agraduate student of Sydney University, you really gave me a lot of valuablehelp. You not only wrote a recommendation（推荐）for me to Professor Wells who worksin the Sydney University but also gave me careful and patient instructions onhow to fill the application forms and write the application letters.
It is your unreserved(无保留的）help thatenables me to obtain this splendid（极好的）opportunity of further education. For thefollowing two years I will study hard to reciprocate（回报）your sincere help andexpectations with excellent grades.
Yours truly,
