"You have an apple."
Translation:Kamu punya sebuah apel.
Sebuah is like 'a' or 'an' in english. It kinda give a specific amount about the object you want to say.
Fun fact: There are many kinds beside sebuah.
Sebuah = a fruit of Sepiring = a plate of Secangkir = a cup of Sebotol = a bottle of Sepetak = a block of Sebiji = a seed of Etc...
So, keep learning, you will find something interesting in this language.