YOU SAID:

i like cows because they eat green grass

INTO JAPANESE

彼らは緑の草を食べるので、私は牛が好き

BACK INTO ENGLISH

I like cows because they eat green grass

INTO JAPANESE

私は牛が好きなのは、彼らは緑の草を食べるから

BACK INTO ENGLISH

I like cows because they eat green grass.

INTO JAPANESE

私は、牛が緑の草を食べるので好きです。

BACK INTO ENGLISH

I like cows because they eat green grass.