YOU SAID:
The horses are coming, so you'd better run.
INTO JAPANESE
馬が来るから走ったほうがいいよ。
BACK INTO ENGLISH
The horse is coming, so you better run.
INTO JAPANESE
馬が来るから走ったほうがいいよ。
BACK INTO ENGLISH
The horse is coming, so you better run.
That didn't even make that much sense in English.