YOU SAID:
I like potatoes. They good
INTO JAPANESE
私はジャガイモが好きです。彼らは良い
BACK INTO ENGLISH
I like potatoes. They are good
INTO JAPANESE
私はジャガイモが好きです。彼らは良いです
BACK INTO ENGLISH
I like potatoes. They are good
That didn't even make that much sense in English.