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], Ill 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]