一、Dear sir/madam:

Im delighted you have accepted our invitation to speak at the Conference in [city] on [date].

As we agreed, youll be speaking on the topic "" from [time] to [time]. There will be an additional minutes for questions. Would you please tell me what kind of audio-visual equipment youll need. If you could let me know your specific requirements by [date], I'll have plenty of time to make sure that the hotel provides you with what you need.

Thank you again for agreeing to speak. I look forward to hearing from you.

Sincerely yours,

[name]

[title]

二、Dear sir/madam:

Thank you for your letter of [date].

Im glad that you are also going to [place] next month. It would be a great pleasure to meet you at the [exhibition/trade fair].

Our company is having a reception at [hotel] on the evening of [date] and I would be very pleased if you could attend.

I look forward to hearing from you soon.

Yours sincerely,

[name]

[title]

三、Dear sir/madam:

[organization] would very much like to have someone from your company speak at our conference on [topic].

As you may be aware, the mission of our association is to promote . Many of our members are interested in the achievements your company has made in .

Enclosed is our preliminary schedule for the conference which will be reviewed in weeks. Ill call you [date] to see who from your company would be willing to speak to us. I can assure you that well make everything convenient to the speaker.

Sincerely yours,

[name]

[title]



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