どこで わいんを かいますか？/ where do you buy wine?
わいんを かいますか？
"わいん/wind", "かいます/buy". This means "You buy wine?".
どこ
means "where".
どこで
put the particle "で" at the end. It means "at where, in where".
どこで わいんを かいますか？
Means "Where do you buy wine?".
"わいん/wind", "かいます/buy". This means "You buy wine?".
means "where".
put the particle "で" at the end. It means "at where, in where".
Means "Where do you buy wine?".