常用套话:
邀请:
正式
You are cordially invited to the Opening Ceremony of David LTD.
I take great pleasure in inviting you to an international sales conference.
非正式
We are organizing a special reception to mark the thirty-two anniversary of our company and would(very much)like you to attend.
I should like to invite you to our new company premises in Shanghai.
You are invited to attend a seminar.
拒绝邀请:
正式
非正式
Unfortunately I have already agreed... to... and will therefore be unable to attend...
接受邀请:
正式Mr. Brown thanks(...)for(their)kind invitation to ... and will be delighted/pleased to attend.
非正式
I would be delighted to attend...
Practice 练习:
Write a letter of invitation to Mr. Brown, asking him to pay a visit to your company.