It's difficult 【for him to solve this problem on 】his own.
祝你学习进步,更上一层楼! (*^__^*)
不明白的再问哟,请及时采纳,多谢!
It's difficult for him to solve the problem on his own.
祝你学习进步,更上一层楼! (*^__^*)
It's difficult to solve this problem on his own. on one's own 基本翻译 adv. 独立地;独自地
It's difficult for him to solve the problem on his own.
for him to solve the problem on