邀请信英语作文中的一些万能句如下：
1. I'm writing to invite you to [活动名称]，which will be held on [日期] from [开始时间] to [结束时间] at [地点]。我们真诚希望你能参加。[I hope that you won't decline my invitation.]
2. It is my great pleasure/a great honor for me to invite you to [活动名称]，which will take place at [地点] on [日期]。我们期待你的光临。[We sincerely hope you can attend it.]
3. Would you please let me know as soon as possible if you can accept my invitation to [活动名称]？我们非常期待你的回复。[Would you please let me know as soon as possible if you can accept my invitation？]
4. I wonder if you can come to [活动名称]，which will be held at [地点] on [日期]。你的出席将使活动更加完美。[I wonder if you can come to...]
5. How would you like to join us in [活动名称]？我们期待你的参与。[How would you like to join us in...？]
6. It is with the greatest pleasure that I write to cordially invite you to [活动名称]，which will be held on [日期] at [地点]。我们非常希望你能出席。[It is with the greatest pleasure that I write to cordially invite you to...]
7. I hope that you will be able to come to [活动名称]，which will be held at [地点] on [日期]。你的参与对我们来说意义重大。[I hope that you will be able to come to...]
8. We would be grateful if you could [参与活动或提供支持]。期待你的回复。[We would be grateful if you could...]
9. It is my pleasure to extend an invitation to you to [活动名称]，which will be held at [地点] on [日期]。我们期待与你共襄盛举。[It is my pleasure to extend an invitation to you to...]
10. I am writing to invite you to [活动名称]，which is a great opportunity for us to [活动目的]。我们诚挚地希望你能参加。[I am writing to invite you to...]
这些句子可以根据具体活动的性质、时间和地点进行调整，以确保邀请信既正式又具有个性化。