看了一眼上面这位童鞋回答的,我不得不说写的很好...只是错误也真不少,我只是在上面这位的基础上给改正确了,给楼主借鉴。我在我改的地方会用括号标注。还有一点就是用电脑打字的时候每个标点符号后面都要有一个空格 - -,
The main advantage of mobile phones is that people can use them anytime and anywhere, so they can use one for an emergency. (In) addition, people can access the internet whenever they use the mobile phones, so business people can use tem at work to get information from internet more (conveniently) Moreover, it is very easy to send messages to your friends. Mobile phones can make people keep intimacy in spite of long distance. Mobile phones are turning the world into a small vilage where we can (communicate) with each other easily and simply.Finally,another point in favour of mobile (phones is)(这个词我看了半天才看出来原来少了个空格...) that you can avoid disturbing anyone when he is sleeping (or working) because in that case people often turn off their mobile phones.
On the other hand,there are some drawbacks, too. Firstly, the most important disadvantage is the unknown effects on health in case of over-use. Scientists found that mobile phones can cause brain cancer. (If) you talk for so many hours,you are going to have (headache and) ear problems. Secondly,the mobile phone stimulate home for the high cost of (communication). If you are in 3 membered family, you would spend a lot of money on mobile phone. Because tow to three of family have it, it cost about 150-200D in a month. Furthermore, the inappropriate use of mobile phones could be bothersome. (For) example,it is very (impropriate) to here a mobile phone ringing during a formal conversation,during a lesson, in a (library or) in a cinema. Finally,mobile phones waste people too much time. An Amerian survey show that the teen-ager will spend average 2 hours to send (messages every) day.
In conclusion, there are some benefits and drawbacks to mobile phones. personally, i dont like mobile (phones very) much, but i need use them. In my (opinion), mobile phones are good only if you use them correctly and politely, as in this case, all technology is beneficial!
参考资料:第一条回答