his/her/your/their umbrella
De vez en cuando, él deja su paraguas en el tren.
From time to time, he leaves his umbrella on the train.
Tom perdió su paraguas.
Tom lost his umbrella.
A Tom se le olvidó llevarse su paraguas.
Tom forgot to bring his umbrella.
Tom no sabe dónde está su paraguas.
Tom doesn't know where his umbrella is.
Él suele olvidar su paraguas en el tren.
He often forgets his umbrella on the train.
Someone left their umbrella.
Tom quiere su paraguas de vuelta.
Tom wants his umbrella back.
No entiendo por qué Tom dejaría su paraguas en el auto.
I don't understand why Tom would leave his umbrella in the car.
Ella dejó su paraguas en el bus.
She left her umbrella on the bus.
Un extraño nos ofreció su paraguas bajo la lluvia y siguió caminando como si nada bajo el agua.
A stranger offered us his umbrella in the rain and continued walking as if nothing was wrong underwater.