唉，前面基本上都是机器翻译的，你要是把这些背下来然后上台去讲，会笑死人的。我人工给你翻译了一遍，自己看看吧，是机器翻译还是人工翻译，读一读就知道了。
Hello everyone, my name is Ye xx, and my name on internet (或者用online name) is Oniicyan, you can call me Niicyan, sound like “泥浆” in Chinese. I am 16 years old this year. My nominal age （虚岁是指中国人才有的概念，最好不用这句了,而且后面的腊月也只有中国的农历才有，也不好给外国人解释）is 18 years old since I was born in December in Chinese Lunar Calendar, so I may be counted as a half adult.
I have a big family. I have four sisters besides my parents. If counted the sister-in-laws and their daughters, there are about ten persons. By the way, my one-year old nephew is so cute.
I have a lot of interests and there is not enough time for me to enjoy everything. I spend almost all my time before the computer. What do I do before it? Just watch the animations, listen to the music and chat with other people on QQ sometime and browse the web pages to increase my knowledge. I don’t like to play online game, because it takes too much time and energy. I just play
PC games and most of them are GALGAME, however, I don’t spend too much time on it. I listen to many kinds of music and 80 percent of them are Japanese, 19 percent are pure muse and the left 1 percent is English and Chinese songs. Why I like to listen to Japanese Songs? Because they are the title songs and relative songs in cartoons and games. Every melody will make me to remember one classical work, so it’s double effect for me to listen and I am almost addicted on them. By the way, there are at least 600 songs in my hard drive; every one has the same quality as CD.
我觉得你要是能讲这么多就已经足够了，你的最后一段根本没必要将，还说什么自己的英文水平低，呵呵，没有必要在讲台上这么讲了。
你也没必要把一个稿子死记下来然后上台去背，你一紧张的话绝对就忘了。在自己准备的时候建议你对着镜子看着自己的眼睛练习，如果能说的比较流利就不错了。在台上的时候不要看台下同学的眼睛，那样会让你很紧张的。不妨目光直接看教师后面的黑板，那样你就会轻松不少。
有什么问题可以发消息给我，祝你好运！