請求信是在需要請求別人的幫助時，或說明自己要求暗示希望得到滿足時使用的文書類型。其寫作過程需要表達謝意、明確提出自己要求等。
寫作時可以參考下面的句式：
請求幫助：
Would you do me a favor?
Would you be so kind as to…?
Could I trouble you to send this book for me?
I wonder if you would tell me…?
If it is not too troublesome, could you…?
I hope this request will not trouble you too much.
請求允許：
Please give me a few more days.
May I have a look at your dictionary?
Would you mind if I opened the window?
I wonder if I could open the door.
Would it be possible to have a talk with you?
請求做事(要求與暗示)：
Let’s go to the bookstore this afternoon.
I want to have a look at your book.
I wish you could…
I would like ask you to clean the room.
範文：“我能麻煩您……嗎”
April 20, 2010
Dear Professor Zhu,
I am very happy to have the chance to listen to your lecture on “American Literature”. But it was a pity that I was late that day due to an accident on my way to the lecture and failed to get the handout. Your lecture is really instructive for my English study, so I wonder if you could kindly e-mail the handout to the address: .Heartfelt thanks.
Respectful yours,
Amelia
點評：本文的'寫作對象是學校的教授，因此要注意行文過程中的謙虛和尊敬語氣。應試時可以根據給出的特殊情況，在文首進行說明自己需要幫助的內容或原因，接下來直接提出請求內容，最後表達感謝。
