同学你好，该知识点来自沪江网校《英语零基础直达PETS三级/公共英语三级【6月班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。

同学好：
请参考——
I came to your home this afternoon to invite you to attend the annual English evening. As you were not in, I will leave you a message.
留意句式简洁；happeb to do 表示“碰巧做某事”。
The party will be held at 7 p.m. on June 20th at the school hall.
这里应该用被动语态，party 被举行；留意时间的表达顺序。
There will be many programs, for example, dancing and singing, and some games too. They will be very interesting.
will have … 是谓语，前面需要有主语，因此不恰当；直接处理为并列成分即可。
I really hope you can come. Please contact me as soon as possible.
表达希望“你”来的意愿。by phone 删去比较好，如果可以打电话，“我”为什么要留言。

建议同学多梳理句子结构，根据句意选取恰当的句式；
平时多积累词汇、短语的用法。

祝学习愉快～