结构要点 便笺也叫做便条，是一种简便的信函，形式简单，可用于询问、道歉、请假、约会、留言、归还东西等很多事由。
Suppose you have received a short notice that you are invited to a meeting in another city. Since you do not have time to tell your roommate about it in person, write a note in about 100 words to him/her. Do not sign your own name at the end of your letter, using “Li Ming” instead.Dear Betty,
I have received a short notice and am going to attend a meeting in Suzhou. As time is very limited, I have to take a train immediately and cannot explain it to you in person. I am returning on Friday evening.
So Im sorry that I have to leave without informing you beforehand and cannot go swimming with you tomorrow as I promised. I hope you will take good care of yourself when I am away. Dont forget to close the window and check the lock before you go to sleep. I know you like silk very much and will bring you a silk scarf when I am back.
Yours,
Li Ming
