Los pronombres "no-one" / "anyone" / "nobody" / "anybody" / "nothing" / "anything"... tienen todos ellos significado negativo.

Como regla general:

a) "no-one" / "nobody" / "nothing" / "nowhere" / "no+sustantivo" se utilizan con oraciones afirmativas y se suelen colocar al comienzo de la oración.

b) "anyone" / "anybody" / "anything" / "anywhere" / "any+sustantivo" se utilizan con verbos negativos y se suelen colocar a mitad o al final de la oración.

Ejemplos:

Nothing was decided in our last meeting

No-one called you last night

Last weekend I went nowhere because the weather was terrible

I have been looking for my mother but I haven't found her anywhere

I haven't seen anyone in your office

My company hasn´t done anything in relation with the Kioto Protocol