everything he/she says
Everything he says is true.
No es necesariamente cierto que todo lo que dice el profesor siempre es verdad.
It is not necessarily true that everything the teacher says is always true.
Everything he says is a lie.
Tom parece creerse todo lo que dice Mary.
Tom seems to believe everything Mary says.
Tom cree todo lo que dice Mary.
Tom believes everything Mary says.
Prácticamente todo lo que dice Tom es mentira.
Almost everything Tom says is a lie.
Everything he says is correct.
No puedo creer todo lo que dice Tom.
I can't believe everything Tom says.