1、Dearｘｘｘ：

This Saturday is my birthday and my parents will hold a simple celebrating party for me. I am glad to invite you to come to the party. Blair, Emma and Roan will also be invited. I am sure we will have a good time. We will have dinner at 18:30 so that you are wished to come at 18:15. My mother is a good cook and you will enjoy the dishes. After the dinner, we will play some small games and then eat the cake. My parents and I sincerely expect you to come and hope to see you then.

True yours.

2、【译文】

亲爱的YJBYS：

这个星期六是我的生日，我父母将给我举行一个简单的庆祝派对。我很高兴邀请你来参加派对。我也邀请了布莱尔，艾玛和罗恩。我相信我们会度过一段美好时光的。我们将在6点半吃晚饭，所以希望你们6点15能到。我妈妈厨艺很好，你们一定会喜欢的。吃完晚饭，我们会玩一些小游戏，然后吃蛋糕。我父母和我都真诚期望你们来，希望到时能看到你们。

爱你的ｘｘｘ