I'm sure he must have a bad influence over her.

He was what they used to call a bad influence in the school.

Saying they are a bad influence to their son, she wants him to stop.

But what should parents do if they believe their children's friends are having a bad influence on them?

But players must think of the team and not be a bad influence, having a long face around the hotel.

But I really don't want to be a bad influence, kids.

She didn't really have the time, but it wouldn't do to leave him under such a bad influence.

Come to think of it, who is a bad influence on whom?

He is not cut out for the sport and will be a bad influence on you.

His presence has a bad influence on me in other ways, too.