is it more usual to use 'bolaku' or 'bola aku'?
Yap, "bolaku" is the most usual.
Why not saya bola merah???
Saya bola merah. = I am a red ball.
Bola saya merah. = My ball is red.
I'm getting very confused, can this also mean I have a red ball?
Dear Shirley, please don't be confused.
I have a red ball = Saya punya bola merah.
My ball is red = Bola saya merah.