I agree that we use the indefinite article when talking about not unique jobs/occupations. But does it somehow change depending on the position of the job word in a sentence? I mean, "Builder John has won the prize". Is it common to say like this?
So, I would appreciate it if you could help me with the following sentences:
John is a builder. Builder John has done sth. (or The builder John has done sth?) John, the builder ..., has done sth. (or John, a builder (like a member of a group))
or, if talking about somebody who is famous the writer Alexander Pushkin or just writer? or "Alexander Pushkin, a writer ... ."? or the writer?
and if talking about unique positions The president Trump ... . Trump, the president ... . (or just "Trump, president...")