Use of ser + noun in an A2 test

Question

Why is ser used in the exercise "El hombre fue acusado....." Why not use "El hombre acusó...." Is there a rule or custom about verbs with certain nouns.?

Inma Sánchez · Accepted Answer

Hola Sarah 
This is because in this case the verb ser in the preterite is used to form the passive "ser + participle":  was accused. But you're right, this is confusing for A2 so I will change the question avoiding the passive. 
I hope this clarified it. 
Gracias y saludos.
Inma

Laura Chiarella · Answer

I'm pretty sure "El hombre fue acusado" is part of the passive voice. So "El hombre fue acusado" is the man was accused, but "El hombre acuso" is the man accused (someone). So the difference is who is doing the action -> fue acusado- the man recieves the action, acuso- the man does the action