模板句型：

开头句：说明邀请目的

On behalf of…, I have the honor to invite you to…

It is with the great pleasure that I write to cordially invite you to…

结尾句：期盼回复

I do hope that you will be able to come.

We should be very pleased if you could honor us with your company.

推荐信

模板句型：

　　开头句：说明写作目的

I am writing to you to recommend … for …

I take great pleasure in recommending to you … as …

I would like to present … for your consideration in your search for …

With reference to your requirements, I shall, without reservation, recommend … as an ideal candidate.

结尾句：总结说明

I am confident/ convinced that …

I strongly recommend him to you with no reservation.

Therefore, I do not hesitate to recommend her as an ideal candidate for the post you advertised.