Maybe there is someone else in the house.
Maybe someone else can help us.
Every child needs someone to admire and emulate.
I asked Tom how much he thought it would cost to get someone to paint our house.
I love her, but she's in love with someone else.
One day I added a sentence in Esperanto and someone told me it wasn't what a native speaker would say.
If someone criticizes you, it's because you have something which he will never have.
If someone can't remember his past, he's doomed to experience it anew.
To go faster you'd better go alone, to go further you'd better go with someone.
I need someone who will truly love me.
Tom might have borrowed the money he needed from someone else.
There is someone in this room.
Of course it's a good thing when someone learning a foreign language tries to use it without fear of making mistakes, but I don't think much of people without sufficient ability producing language learning material of poor quality.
A diplomat is someone who can tell you to go to hell and make you eagerly anticipate the trip.
Why would someone do this?
I don't go to the movies alone because I like to talk to someone about the movie afterwards.
I know that someone has informed Tom about Mary's death. But why is it me who has to be that "someone"?
There are always more people who want to fix someone else's mistakes than those who want to do something on their own.