is there a rule for when to use apakah versus apa with a question mark or intonation?
No, but "apakah" tends to be more formal, or even poetic. It also usually indicates a strictly closed question, since "apa", like "what", can also indicate an open question :)
It should be accepted as well.
Apelkah ini ........?
Apakah is Used to elicit a ya or tidak answer
When do you use "sebuah" as in "sebuah apel"?
I think it's only used as a replacement for "an".
You don't really need it, not in daily speech.
"Apakah ini sebuah apel?" , that sounds very formal, better to leave out "sebuah".
"Apakah ini apel ? "
"nggak, ini Hackintosh ! "
Thank you. But what's "nggak"? Is it "tidak" or "bukan" in this context?
Also, 'nggak' is from Javanese or Basa Jawa.
You're right! 'nggak' is a slang for 'tidak' or 'bukan'
What is the difference between
Apakah ini apel?
"Ini apel" can be a question or a statement while "Apakah ini apel" is definitely a question. "Apakah" makes it a yes-no question.
ust "Ini apel?" is also correct.