YOU SAID:
i bought an apple for my dog
INTO JAPANESE
私は犬のためにリンゴを買った
BACK INTO ENGLISH
I bought an apple for a dog
INTO JAPANESE
犬用にリンゴを買った
BACK INTO ENGLISH
I bought an apple for my dog
INTO JAPANESE
犬用にリンゴを買った
BACK INTO ENGLISH
I bought an apple for my dog
That didn't even make that much sense in English.