set one's mind on

例句：

1. 1. I set my mind on studying for the exam tomorrow.
   我决定明天准备考试。
2. 2.She set her mind on becoming a doctor.
   她下定决心要成为一名医生。
3. 3.We need to set our minds on achieving our goals.
   我们需要下定决心实现我们的目标。