话题：
如果你是李华，你将以学生会主席的身份，写一封信，邀请你校的外教Mr.johnson来参加圣诞节晚会，并希望他能为你们主持晚会。

要求：
1，明确晚会举办的时间地点
2，适当描述晚会节目
3，语气委婉
4，100词左右
5，可适当增加内容，完善文章。

Dear Mr.ohnson,
I am Lihua ,a 17-year-old teenager,the president of the students’Union of our school .It’s my honor to invite you to participate in the Chrismas party , which will be held at our school’s theatre,next Friday .
Here are some details about this activity . During the party , there wil be show some short plays that is very fancy to adjust the atmosphere .And there are into xicating Englishsongs . Last but not least , there is going to be performance of some wonderful dances . Surely, many interesting activities are waiting for your participation .
We ope that you will accept our invitation . Ofcause , if it is
convenient for you to be our host in this party ,That will be a great honor to us .
A prompt reply is hightly expected .
Yours ,
Li Hua。