YOU SAID:
Would you like me to buy you some glasses?
INTO JAPANESE
メガネを買ってくれませんか?
BACK INTO ENGLISH
Will you buy glasses?
INTO JAPANESE
メガネを買いますか?
BACK INTO ENGLISH
Do you buy glasses?
INTO JAPANESE
メガネを買いますか?
BACK INTO ENGLISH
Do you buy glasses?
That didn't even make that much sense in English.