面几点：

1.确定文体：这是一封电子邮件。写作时注意电子邮件的写作特点。

2.主体时态：文章应以一般现在时和一般将来时为主。

3.主体人称：由于是介绍中国人使用手机的情况，所以人称应该以第一人称为主。

联想词汇

1.手机使用the cellphone using

2.随着......的发展with the development of...

3.在我们的日常生活中in our daily life

4.与......联系get in touch with...

5.上网 surf the Internet

6.总之in a word

7.一方面......，另一方面......for one thing...，for another...

8.导致麻烦cause trouble

句式升级

1.随着手机技术的发展，手机在中国越来越常见了。

As cellphone technology develops，cellphones are becoming more and more common in China.(as引导状语从句)

With the development of cellphone technology，cellphones are becoming more and more common in China.(with＋n.)

2.在日常生活中，我们不仅能使用手机与朋友联系，还可以用手机上网、玩游戏、听音乐。

In our daily life，we can use cellphones to get in touch with our friends，and surf the Internet，play games or enjoy music on cellphones.(and连接的并列句)

In our daily life，we can not only use cellphones to get in touch with our friends but also surf

the Internet，play games or enjoy music on cellphones.(not only...but also...)

3.一方面，长时间看屏幕对我们的眼睛有害，另一方面，在一些地方使用手机会导致麻烦。

It is bad for our eyes to watch the screen for a long time.What's more，using cellphones in some places can cause trouble.(what's more)

For one thing，it is bad for our eyes to watch the screen for a long time.For another，using cellphones in some places can cause trouble.(for one thing...，for another...)

Dear Jack，

Thank you for your email.Now let me tell you something about the cellphone using in China.