Dear Sir / Madam,
I‘am very glad to learn that part-time tutors are wanted in your trainring shool and I'd like to apply for the vacancy.
As can be seen from the attached resume, I graduated from XX university and is major in foreign language. After my graduation, I have been an English teacher in XX Secondary School for y years. During this period, I have gained experience in teaching English language to secondary students ranging from Form 1 to Form 5.
With the valuable working experience gained from my work, I believe I am suitable for the vacancy and will prove to be an asset to your school.
I look forward to having an interview with you at your convenient time /date.
Yours truly
Li Hua