写作思路：确立中心，围绕选材，确定重点，安排详略，选材时要注意紧紧围绕文章的中心思想，选择真实可信，新鲜有趣的材料，以使文章中心思想鲜明深刻地表现出来。具体如下：
The 21st century network has been a fashion, if you do not have a computer, mobile phone, that you are out. And WHAT I want to say is that the Internet has advantages and disadvantages. Today I will tell you about the advantages and disadvantages of the network.
The use of the network can assist learning, information, entertainment, chat friends...... If you don't know how to write your homework, take a picture with your mobile phone and upload it to the Internet.
The correct answer will be displayed on the Internet, along with detailed steps to solve the problem.
Although the Internet has so many advantages, it also has many disadvantages. Nowadays many teenagers are addicted to online games, some often play games in net bars until dawn.
It not only wastes a lot of good study time, but also damages their health, and some even endanger the safety of the society and others. There are countless examples of people being lured astray by the Internet.
Wu Zhi, a middle school student, did not give him money to go to the Internet cafe to play games, while grandpa and grandma lunch break, holding a half-foot-long knife to grandma, grandma died on the spot, grandpa was also cut into serious injuries.
Another example: a mother and her son often played truant and fought because their son was addicted to games. When the mother walked to the river, she scolded her son, saying, "If you don't listen to me, I will jump off."
Without thinking, the son said, "Jump if you want." Then the mother jumped into the river, and the son immediately jumped into the river, but did not save his mother. The son blamed himself so much that he eventually left with his mother.
Because the network game home scattered the example of death is countless. Let's think carefully, after all is the fault of the network, or our fault?
If it is the fault of the network, then we should not step into the network age and return to the primitive state of the past. However, our study, work and life will be greatly hindered, and the society will come to a standstill.
If it is our teenagers' fault, then we focus on study and do not increase our after-school life, then we have become a "bookworm"?
So, it's up to us to decide whether the Internet is good or bad. If we want the Internet to go bad, the Internet can go bad. If we want the Internet to be good, the Internet can be good. Whether the Internet is good or bad is in our hands.
21世纪网络已是一种时尚，假如你家中没有电脑、手机、那你就out了。而我要说的是网络有利也有弊。今天我就为大家讲一下网络的利与弊。
利用网络可以辅助学习、查找资料、娱乐休闲、聊天交友……假如你的作业不会写，用手机拍个照上传到网络上去，网上就会显示出正确答案，而且还有详细的解题步骤。
网络虽然有这么多的好处，但也有许多弊处。现在许多青少年都沉迷于网络游戏，有些人经常在网吧里玩游戏玩到天亮。不仅浪费了大好的学习时光，而且损害了自己的健康，有些甚至危害到了社会与他人安全。被网络诱惑而步入歧途的事例不胜枚举。
中学生吴治因爷爷奶奶不给他钱去网吧玩游戏，趁爷爷奶奶午休时，手拿一把半尺长的刀向奶奶刺去，奶奶当场身亡，爷爷也被他砍成了重伤。
还有一个事例：一对母子，因儿子沉迷于游戏中也常逃学打架，母亲走到江边时责备了儿子几句，说“你再不听话，我就跳下去”。儿子想都没想，便说：“你要跳就跳”。说完母亲就跳江了，儿子见状也立即跳下去，可却没有救回母亲。儿子十分自责，最终竟随母亲而去。
因为网络游戏家散人亡的例子数不胜数。我们仔细想一想，到底是网络的错，还是我们的错呢？
如果是网络的错，那么我们就不要步入网络时代，回到以前那种原始状态的时代。但我们的学习、工作、生活一定会受到很大的阻碍，社会也将停滞不前。
如果是我们青少年的错，那么我们就一心一意学习，不去增加我们的课余生活，那么我们岂不是成了一个“书呆子”？
所以，网络是好是坏由我们自己来决定。如果我们想让网络变坏，网络也可以变坏。如果我们想让网络变好，网络同样可以好。网络是好是坏，决定权力在我们手中。
Advantage of Internet is that you can do anything that you want on Internet when it was connected to independent world such as download data, programs, game, picture etc. But Internet has risk to receive spy ware, it attempts to disable or delete anti-spy ware tool and suppress warning massages given to users, it damages your data or system in your computer. Moreover, you have risk to find the bad persons when chat in chat room especially women. You can found the crime news on the newspapers. The news said they have many victim from chatting with unknown people by the victim were believed implicitly. In conclusion, many people still use Internet because it is useful and comfortable.