答案：
Dear John,
I’m extremely sorry to tell you that I am unable to go to your party this Sunday. It is very kind of you to invite me to your house and I really look forward to going to your party and sharing your happy experiences abroad. Much to my regret, I will be absent from your party owing to the fact that the College Entrance Exam is just around the corner, for which I am now really busy preparing.
What’s worse, I have caught a bad cold lately and I’d rather I stayed at home instead of going anywhere.
Anyway, we will have many more chances to get together. Would it be convenient for you if we make it after the exam?
I’m truly sorry. I hope you will forgive me and accept my sincere apologies. I look forward to your reply!
Best wishes,
Yours,
Li Hua
题目分析：考查应用文中的书信的写作。请你以李华的名义给你的一位美国朋友John写一封电子邮件，说明你不能参加本周日在他家举办的朋友聚会，要点都已经给出，书信类短文的关键在于要点要全面包括，不能有遗漏和省略。但是要点只是提纲，考生还要在此基础上增加细节，不要逐字逐句翻译，同时注意谋篇布局的顺序，运用合适的连接词连接全文，同时选择高级的词汇和语法项目让文章更有文采。审题时注意本文使用一般现在时，描述要尽量选择简洁的语言，运用合适的语法规则和词汇把各要点都准确表述出。难点在于选择词汇和句型，可以灵活运用高级词汇和固定短语准确表述。还要用适当的连接词被句子连接起来，这样文章显得更连贯。
【亮点说明】Much to my regret,这是固定词组“使我遗憾的是”，look forward to盼望， It is very kind of you to invite me to your house and I really look forward to going to your party and sharing your happy experiences abroad. 这句话用了it做形式主语，I will be absent from your party owing to the fact that the College Entrance Exam is just around the corner, for which I am now quite busy preparing. 这句话用了同位语从句和非限制性定语从句，I have caught a bad cold lately and I’d rather I stayed at home instead of going anywhere.这句话用了虚拟语气， I hope you will forgive me and accept my sincere apologies.这句话用的是宾语从句，还有文章还用了What’s worse,这样的词组使文章更连贯。