He assisted her off her horse.

他帮助她下马。

He assisted me with money.

他拿钱帮助我。

I assisted him in solving (to solve) the problem.

我帮他解决问题。

All the people in the town got together to assist the family whose house had burned down.

镇上的人都合起来帮助房屋被烧的那家人。