YOU SAID:
彼はいい子のであたまがなでなでさせたい
INTO JAPANESE
彼はいい子のなたまがなななでした
BACK INTO ENGLISH
He was a good boy
INTO JAPANESE
いい子だった
BACK INTO ENGLISH
He was a good boy.
INTO JAPANESE
いい子だった
BACK INTO ENGLISH
He was a good boy.
That didn't even make that much sense in English.