发信人： Rosa
收信人：Jessica

内容：
1. 邀请Jessica 来参加家里举办的一个小型舞会以庆祝20周年结婚纪念日。
2. 只邀请几位老朋友，希望能携妻子参加。
3. 时间定在下周六，7月19日晚上7点
4. 知道他们很忙，但希望他们能设法来参加，并热情热切期盼其到来。
写信日期： 2009-4-7

Hello dear Jessica,

On the next Saturday, which is July 19th, We are holding a house party to celebrate the 20th anniversary of our wedding. The party would be held at 7pm, and only my old friends are invited. So if you could come with your wife, do please come. We know that you may be very busy, but we will be very looking forward to see you at that time.

Thank you,

Rosa
2009-4-7

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一般来说，这种内容的信都是男女双方共同邀请的，所以一般发信人是两个人，而且信里面一般都用we来代表两人的。。。
不过，看来你这个是作业了。