她把精力用完了英文怎么说

你可以说 "She has used up all of her energy." 或者 "She has exhausted all of her energy." 这两个短语都表示她已经消耗完了她的精力。

这两个短语都来自英语动词 "exhaust," 意思是 "使精疲力竭，极度疲倦"。例如：

I'm exhausted after running a marathon. (我跑了马拉松后感到精疲力竭。)
She exhausted herself studying for the exam. (她为了考试而把自己累坏了。)

注意，"exhaust" 还可以用作动词，意思是 "使用完，耗尽"。例如：

The car's engine has been exhausted. (这辆车的引擎已经用完了。)
He exhausted all of his savings on the trip. (他把所有的积蓄都用完了去旅行。)