假定你是学校 English corner 负责人李华，上周英语角举行了一次关于"Internet and Life"的专题讨论；你校外教-Mr.Smith作为开场嘉宾给大家做了精彩的演讲，请你给他写封电子邮件表示感谢，内容包括：
1.写信目的；2.学生对演讲的反响；3.表达感谢。
注意：
（1）词数100左右；
（2）可以适当发挥，以使行文连贯；
（3）开头和结尾已给出，不计入总词数。
Dear Mr.Smith，
_____
Yours，
Li Hua

【考点】提纲作文．

【答案】Dear Mr.Smith，
I'm writing to express my sincerest thanks for your great speech.With your excellent lecture as a perfect start，all the students here had a heated discussion.
Thanks to your speech，not only did we learn that the Internet plays an important role in our daily life，but we also learned how much people benefit from it.You also pointed out that while the development of the Internet brings much convenience to our life，we should also realize the importance of using it correctly.
We really appreciate your attendance and look forward to your coming next time.
Yours，
Li Hua