假定你是學校 English corner 負責人李華，上周英語角舉行了一次關于"Internet and Life"的專題討論；你校外教-Mr.Smith作為開場嘉賓給大家做了精彩的演講，請你給他寫封電子郵件表示感謝，內容包括：
1.寫信目的；2.學生對演講的反響；3.表達感謝。
注意：
（1）詞數100左右；
（2）可以適當發揮，以使行文連貫；
（3）開頭和結尾已給出，不計入總詞數。
Dear Mr.Smith，
_____
Yours，
Li Hua

【考點】提綱作文．

【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