"I am a citizen."
Translation:Is saoránach mé.
I was marked wrong for "Táim saoránach". Why?
If you are identifying or classifying something (really think two nouns coming together), you must use the copula is. Forms of bí cannot be used in this situation, without further syntax.
"...think two nouns coming together" This helps tremendously. Thanks very much.
I wrote "Is mé saoránach" and got it wrong. Wouldn't that translate to "A citizen am I"?
No — a classificational copular statement doesn’t use that word order. Saoránach is ea mé could be used to emphasize that I’m a citizen, rather than e.g. a tourist from another country.
The structure of identification ("I am the X") and classification ("I am a X") sentences is different. You can say Is mise an saoránach ("I am the citizen"), but for an indefinite predicate ("a citizen"), the predicate comes before the pronoun.