求达人帮忙看看英语作文,改错.Athank-youletterDearAndy:Ireallydonotknowhowtoexpressmygratitudeforyourhelp.YouhelpmetopasstheAdvancedMathematicsexam,thankyousomuch.Aboutoneyearago.WhenIpreparedforthehigher

Question

求达人帮忙看看英语作文,改错.
A thank-you letter
Dear Andy:
I really do not know how to express my gratitude for your help.You help me to pass the Advanced Mathematics exam,thank you so much.
About one year ago.When I prepared for the higher mathematics,I do not know how to start it,I have no idea for it,my Mathematics foundation is very poor,I was so despair of the exam.I afraid I would not pass the exam.At that time,I met you in the internet chat room,and you taught me how to solve the math problems,and many higher mathematics knowledge,it very helpful for me.
At last,I passed the exam,at the same time ,i though I could not pass the exam if you had not help me,thank you so much.
最后一句是虚拟语气,如果没有你的帮助就不能通过考试,
全文改错,我的英语不好,唯有靠作业拿点分.另外老师要求120字,而且要拿高分的话.感觉有点那啥.顺道如果有高人,能借此教教我写英语作文吗?

Answer 1

直接在楼主的文章上改了：
Dear Andy:
I really do not know how to express my gratitude for your help. It's you who helped me pass the Advanced Mathematics exam, thank you so much.
About one year ago, when I was preparing for the advanced mathematics, I did not know how to start it, I had no idea about it because my Mathematics foundation was very poor. I was very despaired of the exam. I was afraid that I would not pass the exam. At that time, I met you in the internet chat room, and you taught me how to solve the math problems and lots of advanced mathematics knowledge, which was very helpful for me.
At last, I passed the exam. At the same time , I think I could not have passed the exam if you had not helped me, thank you so much!
最后一句还可以说：I could never have passed the exam without your help.