在撰写英语邀请函时，可以使用以下常用句式：
开头句式
I am writing to invite you to [活动名称] [活动日期] at [活动地点]. [你的姓名或组织名]。
We would like to invite you to [活动名称] [活动日期] at [活动地点]. [你的姓名或组织名]。
May I extend an invitation to you to [活动名称] [活动日期] at [活动地点]？ [你的姓名或组织名]。
It is with great pleasure that I invite you to [活动名称] [活动日期] at [活动地点]. [你的姓名或组织名]。
表达邀请原因
I think it would be a wonderful idea if you could participate in [活动名称]. [你的姓名或组织名]。
Your presence at [活动名称] would be an asset to the event. [你的姓名或组织名]。
We believe your participation would greatly enrich [活动名称]. [你的姓名或组织名]。
询问对方是否能参加
I wonder if you can come to [活动名称] [活动日期] at [活动地点]. [你的姓名或组织名]。
Would you be able to attend [活动名称] [活动日期] at [活动地点]？ [你的姓名或组织名]。
I would be most grateful if you could join us for [活动名称]. [你的姓名或组织名]。
表达期盼回复
I do hope that you can make it to [活动名称] [活动日期] at [活动地点]. [你的姓名或组织名]。
I look forward to your participation in [活动名称]. [你的姓名或组织名]。
I eagerly await your response and hope to see you there. [你的姓名或组织名]。
表达感谢和荣幸
It is my pleasure/a great honor for me to invite you to [活动名称]. [你的姓名或组织名]。
I am pleased to invite you to [活动名称]. [你的姓名或组织名]。
It is with the greatest pleasure that I write to cordially invite you to [活动名称]. [你的姓名或组织名]。
这些句式可以帮助你撰写出礼貌、正式且有效的邀请函。根据具体活动的性质和对方的身份，你可以选择合适的句式来表达你的邀请意图和期待。
