I have heard the sentence
Qual seu trabalho?
Why am I allowed to omit the verb ser here? I already know that you are allowed to leave out the definite article, but why the verb?
I have heard the sentence
Qual seu trabalho?
Why am I allowed to omit the verb ser here? I already know that you are allowed to leave out the definite article, but why the verb?
TL;DR: The phrase Qual seu trabalho?
is allowed because there is no loss of meaning by the verb omission but implies a spoken context.
In a more formal context, the verb has to be added. The article o
also can be omitted because of the casual context, but in some regions may sound odd.
It is permitted under colloquial language. The verb is implied in the phrase. Under formal grammar, the verb would have to be added. Some authors
If it is a narrative text, the colloquial use would be accepted as is.
On a more formal context, like an interview transcript, if the speaker said such phrase it would be redacted as either:
Qual [o seu] trabalho?
or
Qual o seu trabalho? (sic)? [1]
The editors would add the verb under brackets or the (sic) indicator, to dispel any suspicion of an error in the transcription.
In terms of grammar, you're not allowed, but portuguese speakers omite some words in their everyday communication and this is an example. This can be done in a everyday communication, but you can't write like that in an essay.