Dear Zhang Wei,
Im glad to know that you are coming to my city during the summer vacation.
However, Im afraid theres some bad news. Im planning to take part in an international conference to be held in another city during the time of your visit. All the top scientists in my field will show up at the conference. More importantly, Im lucky enough to have been selected to give a speech on behalf of my research team at the Conference. I really cant miss it.
I understand that itll be your first time to this city and Im your only friend here. Ive asked my roommate to meet you at the airport, and you can stay in my room. He is a very nice person and he will show you around the city. Hope you two will get on well and have a nice holiday!
Electronic mail, E-mail for short, is a new way of communication by means of computers.Because it is fast, cheap and convenient, it is a very popular means of communication.
电子邮件，简称E-mail， 一种新的通过电脑的交流方式， 因为它迅速，便宜和方便，它是一种非常受欢迎的通讯方式。
Millions of computers all over the world have been connected to form a global network, namely the Internet. You can send or receive letters to people anywhere. You can also store, and compile information. In a word, E-mail helps you overcome spatial and time limitations in communication.
With the rapid growing popularity of computers and expansion of information highway, E-mail is expected to play a more and more important role in our lives.