这段文字有明显的语法错误和用词不当,纠正如下：
When I was three years old ,I began to study English.But I did not studied english continually during my holidays and spare time.So I think that my spoken English and writing skill levels haven't been improve.I realized this in the fourth year of my university.But I stopped studying English when I'm sophomore,for I thought English is not fun and my major had nothing to do with English at all.
My major is Zooarchaeology and when time to graduation comes,we should read some foreign information and I recognize the importance of English.So I have a plan to study English in my graduation period.
Firstly,I must keep studying English every day .
Secondly,as to the detail,I will read and listen English topics every day.
Finally,my goal is that I can speak English smoothly and read papers.I hope I can pass the exam!
翻译过来就是：
当我三岁时,我就开始学习英语了.但是,我没有坚持在我的假期和空闲时间连续学习.所以我认为我的口语和写作水平并没有太大提高.直到我大学四年级才意识到这一点.但是我在大学二年级的时候就已经放弃学习英语了,因为我认为学英语很没意思而且跟我的专业和英语一点关系也没有.
我的专业是动物考古学.毕业季就要来了,所以我们需要阅读一些英语资料.我这才意识到英语的重要性.所以,我在毕业期间制定了一个学习英语的计划.
首先,我必须坚持每天学习英语.
其次,对于细节,我会每天读和听有关英语的话题.
最后,我的目标是能说一口流利的英语并能读懂论文、文章等.我希望我能通过这次考试!
真心希望楼主能学好英语,通过考试!