what's the grammar ?

Question

nunca es demasiado pronto para ir al medico .

for the sentence above , i don't understand the grammar , like ,what is the subject and why ,becasue what i see is all" adjective " and i know the adjective can't be the subject

Answer 1

In this case, the subject of the sentence is implicit in the verb form "es," that is to say that we can tell by the verbs inflected form that the subject of the sentence is in the third person, singular. This phenomenon is typical of so called "null-subject languages" such as Spanish.

In English, we might translate the sentence as:

Nunca es demasiado pronto para ir al médico ? It is never too soon to go to the doctor.

Here, we see that the subject of the sentence is represented in English by the third person, singular, impersonal pronoun, "it."