这个句子正确么?once...

问题描述:

这个句子正确么?once...
Once setting a goal,she will try her best to achieve it.
我不想说once she set a goal,she will try her best to achieve it.觉得有点罗嗦.那么第一句话正确么?请给出负责任的回答.

四楼的什么it不要啊?那she tries to achieve什么啊?
参考一下2楼
Once having the goal set