Help me to write simple formal letter to my lecturer

Can anyone here help me how to write letter to my lecturer, this letter is purpose get me pass programming subject. This is what lecturer advise me. I sat this subject many times but it still failed.

Thanks,

Barri

here the sample: can anyone here correct this :

Dear Sir,

I am a student in Information of technology and doing part-time study. 

I would like you to get me pass for VB programming subject.

1. For information, I have completion all the subject except for this subject.

2.  I studied hard for this subject but unfortunately I got failed. So that I hope that you help me and get the graduate this year.

Thanks,

Thank you so much guy!.. im  very  appreciate it. I got the point.

Hi,

Do you want to write to somebody about this? What would you like to say to them?

Clive