YOU SAID:

i gave a cow some cars

INTO JAPANESE

私は牛にいくつかの車を与えました

BACK INTO ENGLISH

I gave the cow some car

INTO JAPANESE

牛に車をあげました

BACK INTO ENGLISH

I gave a car to the cow

INTO JAPANESE

牛に車を渡しました

BACK INTO ENGLISH

I gave a car to the cow