Breakdown of En el formulario hay que escribir el nombre completo y el domicilio.
Questions & Answers about En el formulario hay que escribir el nombre completo y el domicilio.
Hay que + infinitive is a very common Spanish structure meaning it is necessary to..., you have to..., or one must....
So hay que escribir means you have to write / it is necessary to write.
Why not just escribir? Because escribir alone only means to write. It does not express obligation.
- Escribir el nombre = to write the name
- Hay que escribir el nombre = you have to write the name
This structure is impersonal, so it does not say who specifically must do it. It is often used in instructions, rules, and notices.
Both can express obligation, but they work differently.
Hay que + infinitive = general, impersonal obligation
Tener que + infinitive = a specific person has to do something
- Tengo que escribir mi nombre completo.
- I have to write my full name.
In a form instruction, Spanish often prefers hay que because the instruction is general rather than addressed to one named person.