增加一些从句的使用,文章会更不错;文中词汇表达较为丰富,但高级词汇比较少,单词拼写要也加强;结构不严谨,行文不流畅。
Dear John, Hi! John. I am LiHua. I am so sorry for that i can't go for dinner with your family. Thank you for yur invition. Because i have the exam after day.Recently i am busy with the exam . As you know , this exam is very important to me. If I don't pass the exam , my dad will be angry . So i must working hard . I hope you can have a nice day. I think we could about another day .