We have known each other since childhood.

She is more of an acquaintance than a friend.

It was pure accident that I came to know her.

I struck up an acquaintance with her.

She is more an acquaintance than a friend.

Through him I got acquainted with the big names of the town.

He got acquainted with some villagers.

He is acquainted with my wife.

He is acquainted with the mayor.

He became acquainted with the actor.

He once knew her, but they are no longer friends.

I don't know any more about him. I know him, but only to say hello to.

I got to know him.

I have known him for ten years.

It is said that Japanese people are kind to people they know, but rather cold to those they don't.

I'll call a repairman I know who'll be at your house to fix the washing machine promptly.

I have known her for five years.

I have been acquainted with her for more than 20 years.

I have been acquainted with her for more than 20 years.

I am acquainted with him.