Half-brother

He's my half-brother.

Tom has a half-brother.

Tom is my half-brother.

Tom is Mary's half-brother.

I have a half-brother.

Tom is Mary's half-brother, isn't he?

Did you know that Tom is my half-brother?

He has a half-brother.

He's got a half-brother.

My mother told me that Tom is my half-brother.