One day the hare proudly challenged the turtle to a race .
有一天兔子驕傲的向烏龜挑戰賽跑。
例：One day I had dinner with her at that restaurant. (過去時)
有一天我曾和她在那家餐廳吃晚飯。
One day the little boy will be a great man .(將來時)
有一天這個小男孩會成為偉人。
tips：
例：Someday the little boy will be a great man.
=One day the little boy will be a great man
有一天這個小男孩會成為偉人。
例：The other day I met him at the train station.
前幾天我曾在火車站遇到他。
以上這些副詞或者狀態均可置於句首或句尾。
The little boy will be a great man someday.
The little boy will be a great man One day.
I met him at the train station the other day.
In the end , he was rewarded for his perseverance .
最後，他因堅韌不拔的精神而獲得回報。
in the end 到最後
=at last
in the beginning 起初
=at first