on ones own initiative

• adj. 主动地(自动地)

on ones own initiative的用法和样例：

例句

用作形容词 (adj.)

1. She helped her students on her own initiative.
   她主动地帮助自己的学生。
2. The child displayed great initiative in going to fetch the police.
   那孩子极为主动地把警察找来。