will leave, will go away, will work, will go well
¿Cuándo se marchará?
When will he leave?
— हम दिल दे चुके सनम (1999)
Antes de seis meses, se marchará.
He'll be gone within six months.
— Jean de Florette (1986)
La gente vendrá y se marchará hasta que los nombres pierdan su significado.
People will come and go until names lose their meaning.
— It's Such a Beautiful Day (2012)
¿Crees que nuestro plan marchará?
Do you think our plan will work?
— Taxi (1998)