How nice to hear from you again.
很高兴再次收到你的回信。
Let me tell you something about the activity.
让我告诉你一些关于这次活动的细节。
I’m glad to have received your letter of Apr. 9th.[/color]
很高兴收到你在4月9号的来信。
I’m pleased to hear that you’re coming to China for a visit.
很高兴得知你将来拜访中国。
I’m writing to thank you for your help during my stay in America.
我正写这封信感谢我在美国你对我的帮助。
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