Impersonal and passive "se"
se Impersonal se plus a verb can be used to talk about generalizations, about what is or isn’t done somewhere. The subject is never specified, and the verb is only used in the third-person singular / plural forms.
se + verbo third person singular third person plural
English is spoken in United States. Se habla inglés en Estados Unidos. One works a lot in this country. Se trabaja mucho en este país. People eat a lot of vegetables. Se comen muchas verduras.
se The impersonal construction se+verb often corresponds to sentences in English that use people, they, you, we, or one as the subject. Some common expressions about what is or isn’t allowed somewhere are:
prohibir to prohibit
third person singular or plural se prohíbe se prohíben is prohibited
permitir to allow
third person singular or plural se permite se permiten is allowed
Se prohíben teléfonos celulares
Se prohíbe fumar
Se prohíbe comida
Se debe.... One should...
Se puede.... One can...