How nice to hear from you.
Let me tell you something about ...... I’m glad to have received your letter. I’m pleased to hear that ......
I’m writing to thank you for your help 结尾部分：
With best wishes.
I’m looking forward to your reply.
I’d appreciate it if you could reply earlier.
Ladies and gentlemen, May I have your attention, please? I have an announcement to make.
All the teachers and students are required to attend it.
Please take your notebooks and make notes.
Please listen carefully and we’ll have a discussion in groups.
Please come on time and don’t be late. 结束语部分：
Please come and join in it.
Everybody is welcome to attend it. I hope you’ll have a nice time here. That’s all. Thank you.
As we all know, .../As is known to all,.../It is well known that...
In my opinion,.../As far as I am concerned,.. This sight reminds me of something in my daily life.
In conclusion.../In brief.../On the whole.../In short.../In a word.../Generally speaking.../
注意：(1)电子邮件的格式已为你写好，不计入总词数;(2)词数：100左右。 Dear David,
I've learned it from the Internet that you want to make a Chinese friend so as to learn the Chinese language and culture. I'm glad that you show such great interest in China and I would like to be your friend.
I will try my best to write to you as often as possible to introduce the Chinese culture to you. When you have an opportunity to come to China, I'll teach you how to speak Chinese and show you around some famous historical places of interest. Anyway, I am going to help you as much as I can. How do you think? I'm looking forward to your reply .