帮我看看我写的这封英语信看看有没有语句不同或者语法错误之处?或者格式有没有问题?Dear Sir or Madam,I,as a sophomore in the university,am writing here to recommend myself as a qualified candidate for the job of PR assistant which you have advertised on poster.The reasons why I am suitable for the job are numerous,with the following two being the foremost.To begin with,a mass of time is available for me to concentrate on the job.Besides,I was the students’ union chairman,so I have abundant exp

Dear Sir or Madam,
I'm a sophomore in university. I write here to recommend myself as a qualified candidate for the job of PR assistant which you have advertised on poster.
The reasons why I am suitable for the job are numerous, with the following two being the foremost. First, a mass of time is available for me to concentrate on the job;second, I am the students’ union chairman, so I have abundant experiences in administration and its like.
Thank you for considering my application and I am looking forward to meet you.
Yours sincerely,
这样改要好一点，英语中尽量少用长句。

Dear Sirs,
re: your advistisement on the poster
I am writing to apply for the position of PR assistant which you advertised on the poster.
I am a sophomore in the university. I think that I am qualified because I have plenty of time to concentrate on this job and I will work hard to fulfill your requirements. Besides, I was the Students' Union Chairman, therefore I have abundant experiences in administration.
Thank you for considering my application and I am looking forward to hearing from you soon.
Yours sincerely,

第一句的可以把I放到am 的前面,没有必要放在开头,直接写成：As a sophomore in the university ,I am ...这样会更加自然些.还有就是I have abundant experience(这里经验是不可数名词,不能加s),its like 可以换成likelihood ,这样会感觉更合适点.最后就是你写信不一定别人就会同意你的申请,别人一般会先写信通知你是否录用你,所以最后最好 用：I am looking forward to hear from you .呵呵,这是我的一点小建议,希望能帮上你.