写了一篇英语演讲稿子,限时60秒,所以可能还要再加一两句话,要是好的话还可以追加分.

先改语法错误,然后减去部分繁杂的词,供参考.
I am a girl,one ordinary and also not.My grade is not impressing though,my interest in English never decreases just because I like it.In order to improve my spoken English,I talk with my teacher,my mates and my parents.When I almost lose faith,my mother encourages me to go on.She tells me that participation is the most important thing,so I'm not afraid any more,and try my best to practise.I feel glad to take part in the competition,and I believe that I am among the best.Nothing can change my mind to win the match.Give me five!
演讲的话在必要地方要把长句断成短句来增强语气和气势；用词也要再肯定点.另外就是,你这篇够讲1分钟吗?

I am a plain girl,but not submitted to be plain. Although my grade is not good enough, my interest in English never decreases. In order to improve my spoken English, I consulted my teachers, classmate...