YOU SAID:
the cat ran faster than the boy on his bike
INTO JAPANESE
猫は自転車で少年よりも速く走りました
BACK INTO ENGLISH
The cat ran faster than the boy on a bicycle
INTO JAPANESE
猫は自転車で少年よりも速く走りました
BACK INTO ENGLISH
The cat ran faster than the boy on a bicycle
That didn't even make that much sense in English.