致歉信1
结构要点:
致歉信是向收信人表示歉意的信件，包括三个部分：
1. 说明为何事而致歉;
2. 解释造成过失或不能履约的原因;
3. 再次致歉或提出解决方案。
Directions ：
Suppose you cannot attend your sister?s graduation ceremony as expected for some reason. Write a letter in about 100 words to make an apology to her. Do not sign your own name at the end of your letter, using Li Ming instead.
Sample:
Dear Linda,
Kindly excuse me for my not being able to attend your graduation ceremony next Wednesday as I have promised.
