YOU SAID:
I don't have an uncle.
INTO JAPANESE
私は叔父を持っていません。
BACK INTO ENGLISH
I have not my uncle.
INTO JAPANESE
私のおじさんがあります。
BACK INTO ENGLISH
My uncle.
INTO JAPANESE
私の叔父。
BACK INTO ENGLISH
My uncle.
That didn't even make that much sense in English.