Every, Some, Any, No + (One/Body/Thing/...)

All these words are singular, so we always use a singular verb with them.

Anyone / Anybody / Anything

• We use anyone in questions and negative sentences
• Is there anyone in the garden?
• There isn't anyone in the garden
• Is anyone there?
• Does anyone have a pen?
• Has anyone ever seen the statue of liberty?
• I don't know anyone at this party
• I don't have anyone to go out

Someone / Somebody / Something

• Some is never used in questions or negative sentences, except for offering food or beverages.
• Would you like something to drink?
• Would you like some Sausage?
• There is someone in the garden
• There is someone on the phone
• There is someone who has a pen
• Someone knows the truth

Everyone / Everybody / Everything

• We use everyone as the opposite of no-one. (It's never used in questions or negative sentences)
• Everyone is in the garden
• Everyone knows that I'm not lying
• Everyone in the class has a either a pen or a pencil

No-one / Nobody / Nothing

• We use no-one as the opposite of everyone. (It's never used in questions or negative sentences)
• No-one is in the garden
• No-one knows the truth
• No-one in the class has neither a pen nor a pencil
• No-one has neither the time to listen, nor the patience to write it