Student or Learner
In the following sentence, does the adjective good apply to both player and writer ..
He is a good player and writer (he is a good player; he is a good writer)
Will the meaning change if this was modified as
He is a good player and a writer (he is a good player; he is a writer)
Also if in the following sentence does puncuation make a difference
He is a good player, writer and teacher ..
Does the following sentence mean he is a good player and a writer due to the placement of comma
He is a good player, and writer (he is a good player and not neccessarily a good writer)
The comma is irrelevant [and unnecessary]. It is the use of the article that indicates two separate statements about him. With the article, you indicate two different things; without the article both are qualified by the one adjective.