将下面短文中的中文句子翻译成相应的英语
One lunchtime when I was in the third grade will stay with me always. I had been picked to be the princess in the school play, and for weeks my mother had painstaking rehearsed my lines with me.尽管在家里我能把台词念的多熟练,可是只要一上台,我就连一句都说不出来了。　

单词提示：
　　painstaking adj. 辛苦的，辛勤的
　　rehearse v. 预演，排练

参考译文：
　　But no matter how easily I delivered them at home,as soon as I stepped onstage, every word disappeared from my head.