假设你是李华，你在读美国中学生Jack的博客时了解到他即将作为一名交换生来北京学习，希望能够寄宿在一名擅长英语的中学生家里，以便更好地了解中国文化。请根据以下要点给Jack写一封电子邮件：
1．欢迎他来中国学习；
2．介绍你个人情况；
3．邀请他住在你家并愿意为他提供帮助。
注意：1．词数120－150；
2．可适当增加细节，以使行文连贯。
Dear Jack,
I’m very glad to learn that you're coming to Beijing as an exchange student and want to stay in a local home with a middle school student who can speak excellent English.
I'm a high school student, and it's my sincere hope that you can stay with me. I am good at English and can communicate with foreigners fluently. Besides, I like reading and traveling in my spare time, so if you are with us, I can take you around Beijing and let you know more about our brilliant Chinese culture.
Both my parents and I are friendly and enthusiastic in personality. So I believe we can be good friends. I'm sure I will do what I can to help you with your Chinese. I'm looking forward to your coming.
Best wishes.
Yours,
Li Hua
文章是一封电子邮件，切入点比较容易，学生在做自我介绍的时候能够比较容易的组织句子，注意各种句型的灵活使用。