常用
1. I would love to come but I can’t because…。。
2. I am terribly sorry that I can’t come …。。 for I am going……
3. I am afraid I will not be able to…。。 because
4. Thank you for your invitation…… but unfortunately……
Invitation letter
Dear _________
I’m very glad to tell you that_______活动 will be held________(where and when).I know that___________邀请原因。 I think that __________邀请原因。 If you _______你来的话， you will__________ 有什么。 If there is anything I can do for you， I would be more than glad to help
I’m looking forward to hearing from you soon.
Your